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SATs / End of key stage 2 Science Assessment: Biology

In this assessment, students will review their understanding of various topics across the Biology programmes of study at key stage 2. This is a timed activity. It may take approximately 60 minutes to complete.

'SATs / End of key stage 2 Science Assessment: Biology' worksheet

Key stage:  KS 2

Curriculum topic:  End of Key Stage Assessments

Curriculum subtopic:  Starter Assessment

Difficulty level:  

down

Worksheet Overview

QUESTION 1 of 10

In this assessment, we'll review your understanding of Biology at key stage 2. This is a timed activity and will take approximately 60 minutes to complete the assessment. Don't worry if it takes longer.

When a seed begins to grow (germinate) the root appears first. Choose THREE reasons why the root is important to the plant.

it takes in light

it anchors the plant

it takes up water

it makes food for the plant

it takes in nutrients

Plants are very special because they make their own food using sunlight, water and carbon dioxide.

Which part of the plant carries out photosynthesis (the scientific name for food production in plants)? 

The main groups of food that your body needs every day are as follows:

Meat and Fish

Fruit and Vegetables

Bread, Cereals and Potatoes

Milk and dairy products

Fats and Sugars

 

You need these in varying amounts. One thing we need lots of is ENERGY.

The car goes to the petrol station to get its energy.

Which of the five food groups give you most of your daily energy?

Meat and Fish

Fruit and Vegetables

Bread, Cereals and Potatoes

Milk and dairy products

Fats and Sugars

The main groups of food that your body needs every day are as follows:

Meat and Fish

Fruit and Vegetables

Bread, Cereals and Potatoes

Milk and dairy products

Fats and Sugars

 

One of these groups contain PROTEIN which is very important in giving you the building-blocks you need to grow as well as to repair/mend your body when you've cut yourself or, even worse, broken a bone.

Which food group contains protein?

Meat and Fish

Fruit and Vegetables

Bread, Cereals and Potatoes

Milk and dairy products

Fats and Sugars

The main groups of food that your body needs every day are as follows:

Meat and Fish

Fruit and Vegetables

Bread, Cereals and Potatoes

Milk and dairy products

Fats and Sugars

 

It's best not to eat too much of one of these groups of food - do you know which one?

Meat and Fish

Fruit and Vegetables

Bread, Cereals and Potatoes

Milk and dairy products

Fats and Sugars

The main groups of food that your body needs every day are as follows:

Meat and Fish

Fruit and Vegetables

Bread, Cereals and Potatoes

Milk and dairy products

Fats and Sugars

 

Why do you think it's a bad idea to eat too much of that group (from Q5)?

What will happen if you have too much of that type of food (tick all the ones you agree with)?

you'll become overweight

your teeth will decay

you'll grow too quickly

you'll find exercise harder

your hair will fall out

Pick THREE things from this list that plants must have in order to make their food:

air

water

soil

wind

light

plant growth food

Imagine that a well-watered potted plant is kept in the dark for two days.

Pick from the list the option that is most likely to happen:

it will shrivel up and die

it will turn yellow

it will stop growing

Thinking about our teeth: the large, flat-topped teeth towards the back of our mouths have which scientific name?

Pointed and sharp, which teeth are shaped for tearing and piercing?

Look at these seeds. Their shape tells us that they are dispersed by which method?

 

 

wind

animals

rain

Animals disperse seeds in more than one way. Look at the picture of the burdock seed. The hooks have evolved so that the seeds are spread in which way?

eaten by a bird

blown by the wind

'stuck' to animals' fur

explodes

What makes fish different to birds?

they have two eyes

they can breathe under water

they have a skeleton

How is a snake similar to a fish?

they both live in water

they both wriggle

they both have a scaly skin

How is a caterpillar different to a worm?

it is smaller

it is a bright colour

it has legs

When the water a plant needs is taken up by the roots it travels along tiny tubes (like water pipes) inside the stem of the plant. Here are the ends of the tubes as you look at a cut celery stalk:

 

These tubes transport the water to the leaves. One really good way of seeing this in action is to take some stalks of celery (a plant you can eat as a vegetable) and place them in some coloured water:

 

 

Leave them for a while and you can see the leaves turn to the colour of the water - red in this case, but blue works just as well! If you cut the celery you can see the ends of the tubes the water is travelling along as they change to the colour of the water.

Imagine that you have placed five celery stalks in some red-coloured water. Every 15 minutes you cut one of the celery stalks in half. This is what you see when you look down at the cut end of the stalks after each cut:

 

 

Looking at the evidence, how long did it take the water to reach halfway up the celery stalk?

less than 15 mins

between 15 and 30 mins

between 30 and 45 mins

between 45 and 60 mins

between 60 and 75 mins

longer than 75 mins

Here are the pictures of those cut celery stalks again:

 

 

Why did you choose your answer to Q16?

the tubes didn't turn red

the tubes turned red after 15mins

the tubes turned red after 45mins and before 60mins

the tubes turned red after 75mins

Here is a marine food chain:

 

 

 

 

 

ALGAE   PLANKTON   BLUE WHALE

 

In this food chain which is the producer?

Blue Whale

Algae

Plankton

In all habitats, such as a wood, food chains link together into food webs:

 

LEAF   CATERPILLAR   BLUETIT   SPARROWHAWK
         
    <    
    SPIDER   ROBIN    

 

Name the SECOND CONSUMERS from this food web.

Blue tit

Spider

Robin

Sparrowhawk

LEAF   CATERPILLAR   BLUETIT   SPARROWHAWK
         
    <    
    SPIDER   ROBIN    

 

Imagine that a nearby farmer sprayed insecticide (insect-killing poison) on a field next to the wood. If some of the insecticide blew into the wood, which animals might be killed by it?

spider

blue tit

sparrowhawk

caterpillar

Amy tried to write her own description of how the pie she had for lunch moves through her digestive system. But she cannot remember all the new parts she has learned.

Can you help her fill out the empty spaces in her description?

 

The pie first enters the digestive system in the ___________________ (1) where it is ripped and torn by the teeth. The chewed up pie then passes down the ________________ (2). Once in the _________________ (3), the food is churned and mixed with acid to kill any unwanted bacteria, some proteins are also broken down here. The food then moves into the ________________ (4) where breakdown is completed and the useful molecules are absorbed into the blood. The water that is used in the digestive system is absorbed by the ___________________ (5), leaving behind a solid waste called faeces.

 1 2 3 4 5
large intestine
mouth
oesophagus
small intestine
stomach

Polar bears live on the ice and snow in the Arctic. Their favourite food is seal.

Match up the adaptation with its function.

Column A

Column B

large paws
grabbing and tearing meat
layer of fat under the skin
spreds weight on soft snow
white coat
keeps in body heat
huge, sharp canine teeth
camouflage

Which THREE of these adaptations do we find in a range of nocturnal animals? 

sensitive hearing

wings

echo-location

eyes that can see in the dark

feathers

Which plant does not belong in this group?

 

       
OAK TREE DAFFODIL HOLLY TREE FIR TREE

 

oak tree

daffodil

holly tree

fir tree

What is the scientific name for the male sex cells of a plant?

eggs

pollen

anther

nectar

Pollen from one plant is carried to the stigma of another in which TWO of these ways?

by the wind

by other plants

by insects

by earthworms

Flowering plants have evolved ways of attracting pollinating insects to their flowers. Can you spot THREE of them from this list?

by producing nectar

by making a noise

by making fruit

by producing a scent

by having colourful petals

Which statement best describes plant FERTILISATION?

seeds are produced in the ovary

pollen is received by the stigma

joining of the male cell with the female cell

Spring is a time when we often see tadpoles in ponds and waterways. Tadpoles are frog larvae.

Tadpoles hatch from frogspawn. You may even have a tank in your classroom which contains frogspawn. Female frogs produce large amounts of frogspawn because only one or two of these eggs will ever develop into adult frogs. Many get eaten at the early stages in their life cycle.

Match the correct part of the frog life cycle to its description.

Column A

Column B

a mass of clear eggs that has the appearance of je...
tadpole
a small creature with a short tail and large head ...
frogspawn
a fairly large animal with arms and legs and a ver...
froglet
a quite large animal with bulging eyes that squats...
frog

Can you put the stages of the life cycle of a common insect in the correct order?

Make sure your stages start at 'birth' and finish at 'adult'.

butterfly → caterpillar → egg → pupa

caterpillar → egg → pupa → butterfly

egg → caterpillar → pupa → butterfly

pupa → butterfly → egg → caterpillar

Match up these body parts with their function:

Column A

Column B

lungs
a muscular pump
brain
carries digested food and gases around the body
heart
an organ protected by the skull
blood
protects soft organs in the chest
rib cage
collect oxygen from the air

Ben wants to answer the question: "How does exercise affect heart rate?"   Can you help him with the method by putting these steps in the correct order?

Column A

Column B

Step 1
Skip or run for 3 minutes
Step 2
Measure 'resting' pulse
Step 3
Recover and repeat
Step 4
Find a strong pulse
Step 5
Measure pulse after exercise

Ben notices several changes - for example, he warms up as his muscles work and his rate of breathing increases. 

Tick FOUR of the following things that are happening to Ben as he exercises:

extra blood flow is needed to carry away carbon dioxide

the heart beats faster to take food to the muscles

working muscles produce heat

muscles need extra oxygen

extra heat is lost through the lungs

The students in Mrs. Bates's class went round each other recording what colour eyes each person has. They found four different eye colours:

  • BLUE
  • DARK BROWN
  • GREEN
  • HAZEL

 

When they had collected their data Mrs. Bates helped them to put it on to a block graph:

 

 

Look at the graph and decide how many students in the class had green eyes.

1

2

7

9

Here's their graph again.

 

 

 

Look carefully at it and decide what was the most common eye colour in the class.

blue

green

dark brown

hazel

When the students measured their class's heights they found that it ranged from about 120cm to about 150cm. Have a guess at why some students are smaller or taller than others.

the tallest ones ate the most food

the shortest ones do the least amount of sport

it's mainly to do with their Mum and Dad

Use the key below to put these animals into their correct classification group.

 
A B C D E

Column A

Column B

Animal A is a
Bird
Animal B is a
Bony Fish
Animal C is a
Mammal
Animal D is a
Amphibian
Animal E is a
Reptile

Here are some minibeasts:

SNAIL WORM CENTIPEDE SPIDER BEETLE HOVERFLY

 

Use the clue key below to work out which minibeast matches which letter:

Clue 1 If the animal has jointed legs go to Clue 3
  If the animal has no legs go to Clue 2
Clue 2 If the animal has a shell Animal A
  If the animal has no shell Animal C
Clue 3 If the animal has six legs go to Clue 4
  If the animal has more than six legs go to Clue 5
Clue 4 If the animal has two wings Animal D
  If the animal has hard black wing cases Animal F
Clue 5 If the animal has eight legs Animal E
  If the animal has more than eight legs Animal B

 

Column A

Column B

Snail is
Animal D
Worm is
Animal C
Centipede is
Animal A
Spider is
Animal F
Beetle is
Animal E
Hoverfly is
Animal B

Oxygen rich blood from the lungs travels back to the heart to be pumped around the body. What is the name of the large vessels which carry blood away from the heart?

veins

arteries

capillaries

 In the muscles, the oxygen is used to turn food into energy for movement.  What are the vessels called which carry deoxygenated blood back to the heart for re-oxygenation in the lungs?

arteries

capillaries

veins

  • Question 1

When a seed begins to grow (germinate) the root appears first. Choose THREE reasons why the root is important to the plant.

CORRECT ANSWER
it anchors the plant
it takes up water
it takes in nutrients
EDDIE SAYS
The root anchors the plant so that it doesn't blow away! Water is essential for growth and that's another important function of the root - to take in water. Nutrients in the form of minerals are also absorbed by the roots.
  • Question 2

Plants are very special because they make their own food using sunlight, water and carbon dioxide.

Which part of the plant carries out photosynthesis (the scientific name for food production in plants)? 

CORRECT ANSWER
leaves
leaf
EDDIE SAYS
Food made in the leaves is transported right around the plant and builds all the other parts of the plant.
  • Question 3

The main groups of food that your body needs every day are as follows:

Meat and Fish

Fruit and Vegetables

Bread, Cereals and Potatoes

Milk and dairy products

Fats and Sugars

 

You need these in varying amounts. One thing we need lots of is ENERGY.

The car goes to the petrol station to get its energy.

Which of the five food groups give you most of your daily energy?

CORRECT ANSWER
Bread, Cereals and Potatoes
EDDIE SAYS
The group containing bread and things like pasta, potatoes and so on contain masses of useful energy in the form of starch. Sugar contains masses of energy too, but your teeth suffer if you have too much (amongst other things!).
  • Question 4

The main groups of food that your body needs every day are as follows:

Meat and Fish

Fruit and Vegetables

Bread, Cereals and Potatoes

Milk and dairy products

Fats and Sugars

 

One of these groups contain PROTEIN which is very important in giving you the building-blocks you need to grow as well as to repair/mend your body when you've cut yourself or, even worse, broken a bone.

Which food group contains protein?

CORRECT ANSWER
Meat and Fish
EDDIE SAYS
The group containing meat and fish contains lots of protein that are your building-blocks - that means your body is made of protein ... from the things you ate! Think about it! Does a vegetarian (who doesn't eat meat) need protein too? Of course, but they get it from vegetable sources.
  • Question 5

The main groups of food that your body needs every day are as follows:

Meat and Fish

Fruit and Vegetables

Bread, Cereals and Potatoes

Milk and dairy products

Fats and Sugars

 

It's best not to eat too much of one of these groups of food - do you know which one?

CORRECT ANSWER
Fats and Sugars
EDDIE SAYS
You don't want to being eating foods with too much fat and sugar in (we'll find out why soon), but today so many of our favourite foods, especially ones that are ready-to-eat, are packed with the stuff, so they're hard to avoid.
  • Question 6

The main groups of food that your body needs every day are as follows:

Meat and Fish

Fruit and Vegetables

Bread, Cereals and Potatoes

Milk and dairy products

Fats and Sugars

 

Why do you think it's a bad idea to eat too much of that group (from Q5)?

What will happen if you have too much of that type of food (tick all the ones you agree with)?

CORRECT ANSWER
you'll become overweight
your teeth will decay
you'll find exercise harder
EDDIE SAYS
Foods containing fats and sugars are very attractive (chocolate, cake, crisps, chips, etc.) and are difficult to avoid. It's good to have small amounts of fat and sugar - what happens is that we tend to eat way too much and our bodies suffer.
  • Question 7

Pick THREE things from this list that plants must have in order to make their food:

CORRECT ANSWER
air
water
light
EDDIE SAYS
Air, water and light are the ingredients that must ALL be present for the plant to be able to make its own food. Soil and plant growth food provide vital minerals for health but are not essential (you can grow cress on kitchen towel!).
  • Question 8

Imagine that a well-watered potted plant is kept in the dark for two days.

Pick from the list the option that is most likely to happen:

CORRECT ANSWER
it will stop growing
EDDIE SAYS
Two days is not long enough to affect the colour of the plant. Without light it will use up any food it has stored and then it cannot make any more so it will stop growing.
  • Question 9

Thinking about our teeth: the large, flat-topped teeth towards the back of our mouths have which scientific name?

CORRECT ANSWER
molars
premolars
EDDIE SAYS
That chunk of apple has to be ground and crushed into smaller pieces before swallowing. That's the job of the molars.
  • Question 10

Pointed and sharp, which teeth are shaped for tearing and piercing?

CORRECT ANSWER
canine
canines
EDDIE SAYS
Canines are not as important for humans as they are for some other animals, especially meat-eating carnivores, like cats.
  • Question 11

Look at these seeds. Their shape tells us that they are dispersed by which method?

 

 

CORRECT ANSWER
wind
EDDIE SAYS
Seeds with 'wings' or 'parachutes' travel on the wind.
  • Question 12

Animals disperse seeds in more than one way. Look at the picture of the burdock seed. The hooks have evolved so that the seeds are spread in which way?

CORRECT ANSWER
'stuck' to animals' fur
EDDIE SAYS
Seeds with hooks and hairs are easily caught in furry or woolly coats and carried far away from the parent plant
  • Question 13

What makes fish different to birds?

CORRECT ANSWER
they can breathe under water
EDDIE SAYS
Both birds and fish generally have two eyes, so that can't be it and they both have a skeleton inside them. So the answer is that fish can breathe under water and birds cannot. Diving birds, like penguins, still have to come to the surface to breathe.
  • Question 14

How is a snake similar to a fish?

CORRECT ANSWER
they both have a scaly skin
EDDIE SAYS
Some snakes do live in water, but most don't and while snakes can be pretty wriggly most fish aren't. However, they both have a scaly skin. A fish's scales are separate to each other while a snake's scales are more part of its skin, except underneath where their scales help them to move along the ground.
  • Question 15

How is a caterpillar different to a worm?

CORRECT ANSWER
it has legs
EDDIE SAYS
Some worms are tiny, some caterpillars are pretty big - so that's not right. Bright colour sounds right until you've seen a bright red worm! In fact it's legs - worms never have legs and since caterpillars are insects they have six stumpy little legs!
  • Question 16

When the water a plant needs is taken up by the roots it travels along tiny tubes (like water pipes) inside the stem of the plant. Here are the ends of the tubes as you look at a cut celery stalk:

 

These tubes transport the water to the leaves. One really good way of seeing this in action is to take some stalks of celery (a plant you can eat as a vegetable) and place them in some coloured water:

 

 

Leave them for a while and you can see the leaves turn to the colour of the water - red in this case, but blue works just as well! If you cut the celery you can see the ends of the tubes the water is travelling along as they change to the colour of the water.

Imagine that you have placed five celery stalks in some red-coloured water. Every 15 minutes you cut one of the celery stalks in half. This is what you see when you look down at the cut end of the stalks after each cut:

 

 

Looking at the evidence, how long did it take the water to reach halfway up the celery stalk?

CORRECT ANSWER
between 45 and 60 mins
EDDIE SAYS
Looking at the pictures, you can see the tubes have turned red at 60 mins, but not at 45 mins, so the red dye must have reached them somewhere between 45 and 60 minutes.
  • Question 17

Here are the pictures of those cut celery stalks again:

 

 

Why did you choose your answer to Q16?

CORRECT ANSWER
the tubes turned red after 45mins and before 60mins
EDDIE SAYS
You can see that the tubes are still green at 45 minutes (so the dye hasn't reached halfway up the stalk) but they have turned red at 60 minutes (so the dye has now passed halfway).
  • Question 18

Here is a marine food chain:

 

 

 

 

 

ALGAE   PLANKTON   BLUE WHALE

 

In this food chain which is the producer?

CORRECT ANSWER
Algae
EDDIE SAYS
The producer produces all the food for the chain. Only plants can do this (using sunlight and simple chemicals), so the algae is the producer.
  • Question 19

In all habitats, such as a wood, food chains link together into food webs:

 

LEAF   CATERPILLAR   BLUETIT   SPARROWHAWK
         
    <    
    SPIDER   ROBIN    

 

Name the SECOND CONSUMERS from this food web.

CORRECT ANSWER
Blue tit
Spider
EDDIE SAYS
Second consumers feed on first consumers. The FIRST CONSUMER is always a plant-eater (HERBIVORE) - in this case the caterpillar - so you can see that both blue tits and spiders feed on the caterpillar and so are SECOND CONSUMERS.
  • Question 20
LEAF   CATERPILLAR   BLUETIT   SPARROWHAWK
         
    <    
    SPIDER   ROBIN    

 

Imagine that a nearby farmer sprayed insecticide (insect-killing poison) on a field next to the wood. If some of the insecticide blew into the wood, which animals might be killed by it?

CORRECT ANSWER
spider
caterpillar
EDDIE SAYS
The caterpillar is an insect and will be killed. Although the spider is an arachnid, it is a close relative of the insects and is likely to be killed by the insecticide. The other animals will not be directly killed but will be affected by the death of their prey.
  • Question 21

Amy tried to write her own description of how the pie she had for lunch moves through her digestive system. But she cannot remember all the new parts she has learned.

Can you help her fill out the empty spaces in her description?

 

The pie first enters the digestive system in the ___________________ (1) where it is ripped and torn by the teeth. The chewed up pie then passes down the ________________ (2). Once in the _________________ (3), the food is churned and mixed with acid to kill any unwanted bacteria, some proteins are also broken down here. The food then moves into the ________________ (4) where breakdown is completed and the useful molecules are absorbed into the blood. The water that is used in the digestive system is absorbed by the ___________________ (5), leaving behind a solid waste called faeces.

CORRECT ANSWER
 1 2 3 4 5
large intestine
mouth
oesophagus
small intestine
stomach
EDDIE SAYS
Well done. I think you've successfully broken down the digestive system.
  • Question 22

Polar bears live on the ice and snow in the Arctic. Their favourite food is seal.

Match up the adaptation with its function.

CORRECT ANSWER

Column A

Column B

large paws
spreds weight on soft snow
layer of fat under the skin
keeps in body heat
white coat
camouflage
huge, sharp canine teeth
grabbing and tearing meat
EDDIE SAYS
Did you know that polar bears have white fur, but black skin? Black skin helps them keep warm, and white fur allows them to hunt without being seen.
  • Question 23

Which THREE of these adaptations do we find in a range of nocturnal animals? 

CORRECT ANSWER
sensitive hearing
echo-location
eyes that can see in the dark
EDDIE SAYS
Nocturnal animals need to collect information using very well developed senses. These might be sight, sound, feel, taste or echo-location.
  • Question 24

Which plant does not belong in this group?

 

       
OAK TREE DAFFODIL HOLLY TREE FIR TREE

 

CORRECT ANSWER
daffodil
EDDIE SAYS
It's the daffodil: they are all plants but the other three are trees, with big solid wooden trunks and leaves on branches.
  • Question 25

What is the scientific name for the male sex cells of a plant?

CORRECT ANSWER
pollen
EDDIE SAYS
Nectar is a sweet liquid produced by the petals to attract pollinating insects and the anther is the top part of the stamen where the pollen is made and released from.
  • Question 26

Pollen from one plant is carried to the stigma of another in which TWO of these ways?

CORRECT ANSWER
by the wind
by insects
EDDIE SAYS
Some plants have insignificant flowers which release masses of tiny pollen grains which get blown around by the wind. Other plants have brightly coloured flowers to attract insects to them and their sticky pollen is carried from flower to flower by their insect messengers.
  • Question 27

Flowering plants have evolved ways of attracting pollinating insects to their flowers. Can you spot THREE of them from this list?

CORRECT ANSWER
by producing nectar
by producing a scent
by having colourful petals
EDDIE SAYS
Plants which attract night-flying insects use scent which is easy to detect in the dark, e.g. honeysuckle. The colourful petals stand out for insects and direct them to where the sweet nectar is produced.
  • Question 28

Which statement best describes plant FERTILISATION?

CORRECT ANSWER
joining of the male cell with the female cell
EDDIE SAYS
Fertilisation occurs when the male cells, the pollen, fuses with the female cell, the egg. That happens in the ovary, at the bottom of the stigma.
  • Question 29

Spring is a time when we often see tadpoles in ponds and waterways. Tadpoles are frog larvae.

Tadpoles hatch from frogspawn. You may even have a tank in your classroom which contains frogspawn. Female frogs produce large amounts of frogspawn because only one or two of these eggs will ever develop into adult frogs. Many get eaten at the early stages in their life cycle.

Match the correct part of the frog life cycle to its description.

CORRECT ANSWER

Column A

Column B

a mass of clear eggs that has the...
frogspawn
a small creature with a short tai...
tadpole
a fairly large animal with arms a...
froglet
a quite large animal with bulging...
frog
EDDIE SAYS
The life cycle of a frog is quite simple to learn, really. You could practice learning it by asking an adult or a friend to draw a picture to represent each stage, then try to identify the correct stage by looking for the clues in the drawing.
  • Question 30

Can you put the stages of the life cycle of a common insect in the correct order?

Make sure your stages start at 'birth' and finish at 'adult'.

CORRECT ANSWER
egg → caterpillar → pupa → butterfly
EDDIE SAYS
Have you read 'The Hungry Caterpillar'? It's one of my most favourite books. It's also fabulous because it teaches you about the life cycle of a butterfly in a really cool way.
I wish I could eat all the food that the caterpillar does and then go to sleep for ages before waking up with a fabulous set of new wings!
P.S. Sometimes the pupa is also known as a chrysalis (pronounced cris-a-lis).
  • Question 31

Match up these body parts with their function:

CORRECT ANSWER

Column A

Column B

lungs
collect oxygen from the air
brain
an organ protected by the skull
heart
a muscular pump
blood
carries digested food and gases a...
rib cage
protects soft organs in the chest
EDDIE SAYS
Blood carries oxygen to the muscles and carries carbon dioxide back to the lungs.
  • Question 32

Ben wants to answer the question: "How does exercise affect heart rate?"   Can you help him with the method by putting these steps in the correct order?

CORRECT ANSWER

Column A

Column B

Step 1
Find a strong pulse
Step 2
Measure 'resting' pulse
Step 3
Skip or run for 3 minutes
Step 4
Measure pulse after exercise
Step 5
Recover and repeat
EDDIE SAYS
It is important to collect more than one set of readings when answering a scientific question so that any 'unreasonable' results can be spotted.
  • Question 33

Ben notices several changes - for example, he warms up as his muscles work and his rate of breathing increases. 

Tick FOUR of the following things that are happening to Ben as he exercises:

CORRECT ANSWER
extra blood flow is needed to carry away carbon dioxide
the heart beats faster to take food to the muscles
working muscles produce heat
muscles need extra oxygen
EDDIE SAYS
As you exercise you breathe faster because your muscles need more oxygen to produce energy and the carbon dioxide they make needs to be removed. The heat your muscles produce is lost from the blood through the skin and through sweating.
  • Question 34

The students in Mrs. Bates's class went round each other recording what colour eyes each person has. They found four different eye colours:

  • BLUE
  • DARK BROWN
  • GREEN
  • HAZEL

 

When they had collected their data Mrs. Bates helped them to put it on to a block graph:

 

 

Look at the graph and decide how many students in the class had green eyes.

CORRECT ANSWER
1
EDDIE SAYS
If you look at the green bar you can see that it lines up with the number 1 on the left-hand axis - which means only one student in the class had green eyes. Mind you, it's not a common eye colour.
  • Question 35

Here's their graph again.

 

 

 

Look carefully at it and decide what was the most common eye colour in the class.

CORRECT ANSWER
blue
EDDIE SAYS
If you look at the graph you can see that the highest bar is the one for blue eyes: 9 students had blue eyes, more than dark brown (7 students), so blue is the commonest eye colour in the class.
  • Question 36

When the students measured their class's heights they found that it ranged from about 120cm to about 150cm. Have a guess at why some students are smaller or taller than others.

CORRECT ANSWER
it's mainly to do with their Mum and Dad
EDDIE SAYS
You don't KNOW the answer to this yet - you'll be finding out about it in another year or two. How tall you are is to do with several things but the main thing is what you inherit from Mum and Dad. Their height has a big effect on how tall you end up and how fast you grow.
  • Question 37

Use the key below to put these animals into their correct classification group.

 
A B C D E

CORRECT ANSWER

Column A

Column B

Animal A is a
Reptile
Animal B is a
Mammal
Animal C is a
Amphibian
Animal D is a
Bony Fish
Animal E is a
Bird
EDDIE SAYS
This key helped you to use their features to place each animal into its correct group (which you probably knew anyway!). So, for Animal A (the snake) it has scales but no gills, so it is a REPTILE.
  • Question 38

Here are some minibeasts:

SNAIL WORM CENTIPEDE SPIDER BEETLE HOVERFLY

 

Use the clue key below to work out which minibeast matches which letter:

Clue 1 If the animal has jointed legs go to Clue 3
  If the animal has no legs go to Clue 2
Clue 2 If the animal has a shell Animal A
  If the animal has no shell Animal C
Clue 3 If the animal has six legs go to Clue 4
  If the animal has more than six legs go to Clue 5
Clue 4 If the animal has two wings Animal D
  If the animal has hard black wing cases Animal F
Clue 5 If the animal has eight legs Animal E
  If the animal has more than eight legs Animal B

 

CORRECT ANSWER

Column A

Column B

Snail is
Animal A
Worm is
Animal C
Centipede is
Animal B
Spider is
Animal E
Beetle is
Animal F
Hoverfly is
Animal D
EDDIE SAYS
This key helps you to sort out six minibeasts: if we take the CENTIPEDE - it has jointed legs (to clue 3), more than 6 legs (to clue 5) and more than 8 legs.
  • Question 39

Oxygen rich blood from the lungs travels back to the heart to be pumped around the body. What is the name of the large vessels which carry blood away from the heart?

CORRECT ANSWER
arteries
EDDIE SAYS
Arteries are the thick-walled vessels that take blood, under high pressure, right around the body. As it travels to all parts of the body, the arteries become thinner.
  • Question 40

 In the muscles, the oxygen is used to turn food into energy for movement.  What are the vessels called which carry deoxygenated blood back to the heart for re-oxygenation in the lungs?

CORRECT ANSWER
veins
EDDIE SAYS
Blood returns to the heart through the veins before being pumped back to the lungs for its next load of oxygen.
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