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SAT Practice: General Science 1 (2013/Levels 3-5)

In this worksheet students practice general science in the 2013 SATs style questions similar of those contained in past SATs papers.

'SAT Practice: General Science 1 (2013/Levels 3-5)' worksheet

Key stage:  KS 2

Curriculum topic:  Practice Papers

Curriculum subtopic:  SAT Practice Papers

Difficulty level:  

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Worksheet Overview

QUESTION 1 of 10

This worksheet contains 20 SAT style questions. Questions are taken from across the whole science strand including scientific enquiry (SAT 2013).

These questions are typical of the type students will come across during the examination and are appropriate for those students who will sit the level 3-5 paper.

Edward Jenner developed the first vaccine against smallpox.

Jenner noticed that people who had been infected with cowpox did not contract smallpox.

 

 

Complete the sentence:

 

Jenner made an ____________ .

effect

estimate

investigation

observation

Smallpox is caused by a microbe.

Identify two microbes that cause disease.

bacteria

proteins

virus

worms

Microbes such as bacteria can be both harmful as well as very useful.

Microbes are essential in the formation of soil.

 

 

What process is carried out by microbes in the soil?

decay

break up

Good, rich soil is needed for plant growth.

Plant roots anchor the plant in the soil.

Minerals are taken up into a plant through the roots.

 

What other essential substance is also taken in through the roots?

Write one word.

Ali lives in a city.

He has a small garden surrounded by high walls, he would like to grow sunflowers.

Ali is worried that the high walls surrounding his garden will limit the growth of his plants.

 

What is the name of the essential process that plants require sunlight for?

Write one word.

Ali's garden has high walls surrounding it.

For most of the day his garden is in shadow.

 

 

How do the shadows in Ali's garden form?

The walls surrounding his garden block light from the Sun from reaching his garden.

The walls surrounding his garden reflect light from the Sun away from his garden.

Ali wants to maximise the amount of light his sunflowers receive. Therefore he fixes a mirror to the top of one of the walls in his garden.

Ali hopes that light will reflect off the mirror onto his plants.

 

 

Complete the sentence:

 

Light is reflected back from a mirror at ______________ angle.

a decreased

a greater

the same

Jasmine is investigating solutions.

She dissolves an oxo cube in 100 ml of hot water and times how long it takes to fully dissolve. 

Jasmine repeats the experiment, this time she uses cold water.

 

 

What steps should Jasmine take to ensure a fair test?

Select two answers from the list. 

stir the contents of the beaker

use the same type of oxo cube

use a different type of beaker

use the same volume of water

Jasmine recorded her results in a table:

 

Temperature of the water Time taken (minutes)
hot  8
cold 22

 

What conclusion can Jasmine draw about her data?

Dissolving an oxo cube in cold water is quicker than in hot water.

Dissolving an oxo cube in hot water is quicker than in cold water.

The temperature of the water makes no difference to the time taken for an oxo cube to dissolve.

Jasmine's friend Joe was her partner during the investigation.

 

Joe says: "Once a substance has dissolved in a liquid, you cannot get it back because dissolving is an irreversible change".

Jasmine says: "We can easily get the dissolved substance back by allowing the water to evaporate, dissolving is a reversible change".

 

Who is correct?

Jasmine

Joe

Rob's car has broken down.

He tries to push his car off the road so that it is no longer dangerous to passing traffic.

Rob is using his muscles to move the car.

 

 

What happens to a muscle when it contracts?

It lengthens.

It shortens.

When Rob had finished pushing his car off the road, he noticed his heart was beating much faster.

Why did Rob's heart rate increase?

He needs to get more oxygen and food to his muscles.

He needs to get more carbon dioxide to his muscles.

Rob had to apply a force to his car to push it off the road.

After a lot of huffing and puffing Rob eventually got his car moving.

When a force is applied to an object, the object applies an opposite force.

 

 

Identify the two opposite forces that are acting on Rob's car when it is rolling.

air resistance

friction

gravity

Rob's car had run out of petrol.

Petrol is a fuel made from oil. Plastic is also made from oil.

Rob walks to the nearest petrol garage with his jerry can. He is going to fill the bottle with petrol and take it back to his car.

A jerry can is a large plastic container. Petrol is a liquid.

 

 

What do scientists say about the shape of a liquid in a container like a jerry can? 

The shape of the liquid will not change, it is fixed.

The shape of a liquid can change depending on the shape of the container it is in.

Orla is investigating electrical circuits.

She has constructed a simple series circuit.

 

 

How many components are in Orla's circuit?

Write one word.

Orla is investigating what happens to the brightness of the lamps when more are added into the circuit.

What will happen to the brightness of the lamps when Orla adds a third lamp into this circuit?

They will go brighter.

They will go dimmer.

Orla is now investigating what happens when she adds more batteries into her circuit.

 

 

Orla predicts that the lamps will shine brighter.

Her friend Lorna does not agree, she thinks that adding a battery into the circuit will have no effect on the brightness of the lamps.

 

Who is correct?

Lorna

Orla

Orla has used copper wire to connect the components of her circuit.

Copper is a metal.

 

What property of copper makes it an excellent material for wire?

Complete the sentence by writing one word:

 

Copper is a ____________ of electricity.

The diagram shows a food chain

 

 

Identify all the predators in this food chain.

greenfly

hawk

ladybird

robin

A food chain shows the feeding relationships between plants and animals from the same habitat.

 

What would happen to the number of ladybirds in this food chain if the number of hawks increased?

They would decrease because the hawks will eat more robins, the robins will have to eat more ladybirds to survive.

They would increase because the hawks will eat more robins, there will be less robins to eat the ladybirds.

  • Question 1

Edward Jenner developed the first vaccine against smallpox.

Jenner noticed that people who had been infected with cowpox did not contract smallpox.

 

 

Complete the sentence:

 

Jenner made an ____________ .

CORRECT ANSWER
observation
EDDIE SAYS
When a scientist spots a trend in data, like Jenner did, they make an observation.
Scientists must carry out an investigation into their observations to find out if they are linked or just coincidental.
  • Question 2

Smallpox is caused by a microbe.

Identify two microbes that cause disease.

CORRECT ANSWER
bacteria
virus
EDDIE SAYS
Smallpox was a bacterial disease. It was wiped out in 1979.
  • Question 3

Microbes such as bacteria can be both harmful as well as very useful.

Microbes are essential in the formation of soil.

 

 

What process is carried out by microbes in the soil?

CORRECT ANSWER
decay
EDDIE SAYS
Microbes breakdown dead plant and animal matter producing humus in the process. This process is called decay.
  • Question 4

Good, rich soil is needed for plant growth.

Plant roots anchor the plant in the soil.

Minerals are taken up into a plant through the roots.

 

What other essential substance is also taken in through the roots?

Write one word.

CORRECT ANSWER
Water
water
EDDIE SAYS
Water is needed by the plant for photosynthesis. It is taken into the plant and into the leaves through the roots.
  • Question 5

Ali lives in a city.

He has a small garden surrounded by high walls, he would like to grow sunflowers.

Ali is worried that the high walls surrounding his garden will limit the growth of his plants.

 

What is the name of the essential process that plants require sunlight for?

Write one word.

CORRECT ANSWER
Photosynthesis
photosynthesis
EDDIE SAYS
Photosynthesis is the process by which plants make their own food. It takes place in the leaves of green plants.
  • Question 6

Ali's garden has high walls surrounding it.

For most of the day his garden is in shadow.

 

 

How do the shadows in Ali's garden form?

CORRECT ANSWER
The walls surrounding his garden block light from the Sun from reaching his garden.
EDDIE SAYS
Shadows form when an object, such as a wall, blocks light from passing through it.
  • Question 7

Ali wants to maximise the amount of light his sunflowers receive. Therefore he fixes a mirror to the top of one of the walls in his garden.

Ali hopes that light will reflect off the mirror onto his plants.

 

 

Complete the sentence:

 

Light is reflected back from a mirror at ______________ angle.

CORRECT ANSWER
the same
EDDIE SAYS
Light rays are always reflected back off a mirror or shiny surface at the same angle as they hit it. This is an important property of light. It is the reasons why devices like the periscope allow a submarine to see above the surface of water despite being deep underneath it.
  • Question 8

Jasmine is investigating solutions.

She dissolves an oxo cube in 100 ml of hot water and times how long it takes to fully dissolve. 

Jasmine repeats the experiment, this time she uses cold water.

 

 

What steps should Jasmine take to ensure a fair test?

Select two answers from the list. 

CORRECT ANSWER
use the same type of oxo cube
use the same volume of water
EDDIE SAYS
So that Jasmine can make a valid comparison between the time taken to dissolve an oxo cube in hot water and cold water, she must make sure that the only difference between the two experiments is the temperature of the water. All the other factors must be the same.
  • Question 9

Jasmine recorded her results in a table:

 

Temperature of the water Time taken (minutes)
hot  8
cold 22

 

What conclusion can Jasmine draw about her data?

CORRECT ANSWER
Dissolving an oxo cube in hot water is quicker than in cold water.
EDDIE SAYS
Jasmine's data clearly shows that dissolving is faster in hot water than cold water.
The process would have been faster if Jasmine had stirred the water.
  • Question 10

Jasmine's friend Joe was her partner during the investigation.

 

Joe says: "Once a substance has dissolved in a liquid, you cannot get it back because dissolving is an irreversible change".

Jasmine says: "We can easily get the dissolved substance back by allowing the water to evaporate, dissolving is a reversible change".

 

Who is correct?

CORRECT ANSWER
Jasmine
EDDIE SAYS
Dissolving is a reversible change. The solute (the substance that was dissolved) can be recovered by evaporation.
It's quite easy to do, just pop the solution near a radiator for a few days.
  • Question 11

Rob's car has broken down.

He tries to push his car off the road so that it is no longer dangerous to passing traffic.

Rob is using his muscles to move the car.

 

 

What happens to a muscle when it contracts?

CORRECT ANSWER
It shortens.
EDDIE SAYS
When a muscle contracts it shortens.
Muscles work together in pairs, when a muscle contracts the other relaxes. You can see this quite easily by bending your knee and observing what happens to your thigh muscle.
  • Question 12

When Rob had finished pushing his car off the road, he noticed his heart was beating much faster.

Why did Rob's heart rate increase?

CORRECT ANSWER
He needs to get more oxygen and food to his muscles.
EDDIE SAYS
When you do some exercise your muscles need energy.
A process called respiration occurs in cells (all the time, but especially during exercise). This process transfers the energy found in food into a type of energy that your body cells can use. Oxygen is needed for this process to occur too.
Your heartbeat increases during exercise so blood rich in food and oxygen can be supplied to the cells that need it most.
  • Question 13

Rob had to apply a force to his car to push it off the road.

After a lot of huffing and puffing Rob eventually got his car moving.

When a force is applied to an object, the object applies an opposite force.

 

 

Identify the two opposite forces that are acting on Rob's car when it is rolling.

CORRECT ANSWER
air resistance
friction
EDDIE SAYS
When Rob applies a push force to his car, it is opposed by friction, between the wheels and the road surface, and air resistance.
Gravity is always acting on the car but it is not an opposing force because it is not acting in the opposite direction to the push force.
  • Question 14

Rob's car had run out of petrol.

Petrol is a fuel made from oil. Plastic is also made from oil.

Rob walks to the nearest petrol garage with his jerry can. He is going to fill the bottle with petrol and take it back to his car.

A jerry can is a large plastic container. Petrol is a liquid.

 

 

What do scientists say about the shape of a liquid in a container like a jerry can? 

CORRECT ANSWER
The shape of a liquid can change depending on the shape of the container it is in.
EDDIE SAYS
Liquids and gasses take the shape of the container they are stored in. Solids have a fixed shape.
  • Question 15

Orla is investigating electrical circuits.

She has constructed a simple series circuit.

 

 

How many components are in Orla's circuit?

Write one word.

CORRECT ANSWER
3
Three
three
EDDIE SAYS
There are three components in this circuit. One battery and two lamps.
  • Question 16

Orla is investigating what happens to the brightness of the lamps when more are added into the circuit.

What will happen to the brightness of the lamps when Orla adds a third lamp into this circuit?

CORRECT ANSWER
They will go dimmer.
EDDIE SAYS
Adding more lamps into a series circuit makes the lamps go dimmer. This is because the total amount of energy in the circuit is shared between all of the lamps.
  • Question 17

Orla is now investigating what happens when she adds more batteries into her circuit.

 

 

Orla predicts that the lamps will shine brighter.

Her friend Lorna does not agree, she thinks that adding a battery into the circuit will have no effect on the brightness of the lamps.

 

Who is correct?

CORRECT ANSWER
Orla
EDDIE SAYS
Orla is correct. Increasing the number of batteries in a circuit increases the brightness of the lamps. This is because the amount of energy in the circuit has been increased.
  • Question 18

Orla has used copper wire to connect the components of her circuit.

Copper is a metal.

 

What property of copper makes it an excellent material for wire?

Complete the sentence by writing one word:

 

Copper is a ____________ of electricity.

CORRECT ANSWER
conductor
EDDIE SAYS
All metals conduct electricity. Copper is a very good conductor. Most of the wires in your house will be made from copper
  • Question 19

The diagram shows a food chain

 

 

Identify all the predators in this food chain.

CORRECT ANSWER
hawk
ladybird
robin
EDDIE SAYS
A predator is an animal that hunts and eats another animal.
  • Question 20

A food chain shows the feeding relationships between plants and animals from the same habitat.

 

What would happen to the number of ladybirds in this food chain if the number of hawks increased?

CORRECT ANSWER
They would increase because the hawks will eat more robins, there will be less robins to eat the ladybirds.
EDDIE SAYS
A change in a food chain can have a huge effect on the whole of a habitat.
If the number of predators increase, then the total number of its prey in that food chain would decrease.
---- OR ----

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