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The Water Cycle 1

In this worksheet, students will answer questions about the main stages in the basic water cycle.

'The Water Cycle 1' worksheet

Key stage:  KS 2

Curriculum topic:  States of Matter

Curriculum subtopic:  Water Cycle: Evaporation and Condensation

Difficulty level:  

down

Worksheet Overview

QUESTION 1 of 10

Here's a diagram of the way that water moves around our environment - it's called the WATER CYCLE.

 

Spend a moment looking over it and thinking about what's going on.

Water cycle

Water is essential for life and, whether we like it or not, rain brings water for plants, animals and people. Water which falls as rain runs into streams and rivers on its way to the sea.

 

 Sun

Heat from the sun and the wind evaporates water from lakes and the sea. It rises in the air to form clouds, where the water vapour condenses into droplets.

The clouds are blown over the land, and when the water droplets in the cloud become too heavy, they fall as rain, sleet or snow.

 

OK with all that?  Let's tackle a few questions to help you get the water cycle nailed.

In the water cycle, which one of these describes the word cycle?

a waterfall falling down a mountainside

a process with no beginning or end

a process with a definite start

The water cycle includes water in streams and lakes, and water in seas and oceans. Which material is present in sea and ocean water, but not in fresh water streams and lakes?

salt

rocks

micro-organisms

Water EVAPORATES from lakes, seas and oceans. Which of these describes the process of evaporation?

solid changing to liquid

gas changing to liquid

liquid changing to gas

In the water cycle, which THREE of these places does water evaporate from? 

the sea

taps

puddles

water pipes

reservoirs

Which TWO of these are natural water channels?

canal

river

stream

moat

Rivers flow to the...

desert

sea

forest

Alison says: 'The volume of water gets bigger when it evaporates.

Adam says: 'The volume stays the same when water evaporates.'

Hmmm.  Have a think about that.  Who do you think is correct?

Alison

Adam

There are three processes named below.

 

Which one do you think describes how clouds are formed?

melting

condensing

raining

What can happen to the water in a cloud when the water droplets become too heavy?

 

There are THREE correct answers.

hail stones

rain

a rainbow

snow

a hurricane

Rivers start as little streams on high ground, for example, mountains and moors.

 

Do you think that is ...True or False? 

True

False

  • Question 1

In the water cycle, which one of these describes the word cycle?

CORRECT ANSWER
a process with no beginning or end
EDDIE SAYS
Cycles in science are processes which continue without a beginning or end. Other examples are animal and plant life cycles. So, cycles are processes which just go on and on - pretty good really as we definitely don't want to run out of water!
  • Question 2

The water cycle includes water in streams and lakes, and water in seas and oceans. Which material is present in sea and ocean water, but not in fresh water streams and lakes?

CORRECT ANSWER
salt
EDDIE SAYS
Yes, oceans and seas are salty whereas fresh water in rivers and lakes is not. So, the question is, where's that salt come from? A giant's salt cellar? Time to ask Mr. Google methinks!
  • Question 3

Water EVAPORATES from lakes, seas and oceans. Which of these describes the process of evaporation?

CORRECT ANSWER
liquid changing to gas
EDDIE SAYS
You'll come across the process of EVAPORATION a lot in science and, indeed, in normal life. After all, when you take a shower or have a bath, the room becomes all 'steamy', doesn't it? That's the steam/water vapour EVAPORATING into the air in the bathroom from the liquid water in your shower - all because the water is hot.
  • Question 4

In the water cycle, which THREE of these places does water evaporate from? 

CORRECT ANSWER
the sea
puddles
reservoirs
EDDIE SAYS
Evaporation occurs from any open water because there's lots of room for the water to evaporate from. You can try it for yourself: measure out, say, 20ml of water with a measuring jug. Pour that into a narrow glass/tumbler. Then measure out another 20ml and pour that on to a plate or saucer. Then leave them on a surface next to each other for a day or two ... see what happens and then ... try to explain why!
  • Question 5

Which TWO of these are natural water channels?

CORRECT ANSWER
river
stream
EDDIE SAYS
Oo, interesting! Canals and moats are man-made waterways while river and streams are natural watercourses which are part of the water cycle.
  • Question 6

Rivers flow to the...

CORRECT ANSWER
sea
EDDIE SAYS
Yeah - that wan't too hard, was it?! Rivers flow into the sea at their mouth (where there's usually an estuary) and then water evaporates from the sea and the cycle continues.
  • Question 7

Alison says: 'The volume of water gets bigger when it evaporates.

Adam says: 'The volume stays the same when water evaporates.'

Hmmm.  Have a think about that.  Who do you think is correct?

CORRECT ANSWER
Alison
EDDIE SAYS
Alison's got that one right. You see, when a liquid evaporates, its volume increases. That's because the particles (atoms/molecules) have more energy and can move more freely. That means there's more space between those particles that are whizzing around and so ... the gas (like steam) takes up more space (volume) than the liquid (like water).
  • Question 8

There are three processes named below.

 

Which one do you think describes how clouds are formed?

CORRECT ANSWER
condensing
EDDIE SAYS
Tricky! When a gas changes into a liquid, the process is called condensing. Back in your bathroom, have you noticed that after your bath/shower your bathroom mirror is all "steamed up", so you can't see yourself? That's because the hot water vapour in the room touched the cold mirror and turned back to liquid - that's CONDENSATION!
  • Question 9

What can happen to the water in a cloud when the water droplets become too heavy?

 

There are THREE correct answers.

CORRECT ANSWER
hail stones
rain
snow
EDDIE SAYS
As the tiny water droplets in a cloud join together they can become big enough to form drops of water, which we call rain. When the temperature in the air is cold, the water in the cloud freezes as it falls, changing it to snow or hail stones.
  • Question 10

Rivers start as little streams on high ground, for example, mountains and moors.

 

Do you think that is ...True or False? 

CORRECT ANSWER
True
EDDIE SAYS
Yes! Rivers start small and collect water as they flow down to the sea or ocean.
---- OR ----

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