3Material AICLE. 5º de Primaria.: Water on our planet (Solucionario)

 

 

 

 

 

4 Material AICLE. 5º de Primaria.: Water on our planet (Solucionario)

SOLUTIONS

Activity 2. Read the following text and complete the chart below.

Activity 5. Listen to the following recording and complete the following text

Water can change from one state to another:

- Solidification: When liquid water gets very cold, it freezes and becomes a solid: ice, snow or hail.- Melting: when ice or snow warms up, it melts and becomes liquid water.This change is called fusion.- Evaporation: when liquid water gets hot, it becomes steam or water vapour.- Condensation: when water vapour gets cold, it becomes liquid water.

The states of water

are

Liquid

SeasOceansLakersRivers

For example

Solid

IceHaliSnow

For example

Gaseous

Water vapourGas

For example

5Material AICLE. 5º de Primaria.: Water on our planet (Solucionario)

Activity 7. Listen to the recording and complete the following chart

Activity 8. Read the following statements and circle if they are true or fal-se. Correct and rewrite the false sentences

Hydrosphere True or false

-The hydrosphere is all the water on the Earth True-There are two types of water: saltwater and True fresh water -Seawater doesn’t contain salt False-Fresh water contains a lot of salt False-Almost all the saltwater is found in lakes, rivers False and groundwater-About 97% of our planet’s water is in seas and True oceans-About 2% of our planet’s water is in our False aquifers, lakes and rivers-About 2% of our planet’s water is frozen True-Snow, ice, icebergs, glaciers have fresh water True-Some fresh water is found in the atmosphere True as gas - Rivers, lakes and groundwater have fresh water True- Oceans and seas have saltwater True

Changes in the state of water

Solidification

The change from

Liquid

Solid

to

Melting

The change from

to

Solid

Liquid

Evaporation

The change from

to

Liquid

Gaseous

Condensation

The change from

to

Gaseous

Liquid

6 Material AICLE. 5º de Primaria.: Water on our planet (Solucionario)

Activity 9. Listen and complete the text

Student A

The hydrosphere is all the water on the Earth. There are two types of water: salt-water and fresh water. Seawater contains a large amount of salt. The water on land only contains very small amounts of salt, so we call it fresh water.

Almost all the saltwater is found in oceans and seas. About 97% of our planet’s water is in our oceans and seas.

Student B

A small amount of fresh water is found in solid form as snow and ice in the polar re-gions, icebergs, glaciers and on mountains. About 2% of our planet’s water is frozen.

A much smaller amount of fresh water is found on land in liquid form as rivers, lakes and groundwater. About 1% of our planet’s water is in our aquifers, lakes and rivers.

Some fresh water is also found in the atmosphere as water vapour, as a gas.

Activity 10. Complete the following chart about different types of water and prepare to share your work with your classmates

Saltwater

97%

2% 1% -1%

Fresh water

Solid or frozen water

- Ice

- Snow

- Ivebergs

- Glaciers

- On mountains

- Oceans

- Seas

Liquid water

- Aquifers

- Rivers

- Lakes

- Groundwater

Gaseous water

- Water vapour

Types of water

7Material AICLE. 5º de Primaria.: Water on our planet (Solucionario)

Activity 12. Listen to the following sentences and say if they are true or false. Then, work in pairs and check your answers with your classmates

The Water Cycle

1. The water cycle is the constant circulation of True water between the sea, the atmosphere and the land.2. This process has five basic phases. False3. The Sun heats the solid water in oceans, rivers and lakes. False4. The water evaporates and changes its state: True from liquid water to water vapour.5. Water vapour rises and condenses. True6. Condensation changes liquid water into water drops. False7. These water drops form clouds. True8. Water falls from clouds in solid form as rain or in False liquid form as snow or hail.9. Water flows over the land and is used by plants True or becomes underground water.10. Some water fills rivers, lakes, seas and oceans. True11. When water from oceans, rivers and lakes evaporates, Falsethe cycle finishes.

Activity 15. Match the two halves of the sentences. Then, put your sentences with your classmate’s sentences and complete the text that explains the water cycle

STUDENT A

The water cycle is the constant atmosphere and land.circulation of water between the sea,

1. The Sun heats the liquid water in oceans, rivers, lakes ...

2. Water vapour rises and condenses.

Condensation changes water vapour into water drops.

4. Water flows over the land and is used underground water.by plants or becomes

8 Material AICLE. 5º de Primaria.: Water on our planet (Solucionario)

STUDENT B

This process: has four basic phases.

The water evaporates and changes from liquid water to water vapour.its state:

These water drops form clouds.

Water falls from clouds in liquid as rain or in solid form as snow or form hail.

Some water fills rivers, lakes, ponds, seas, oceans...

When water from oceans, rivers and evaporates, the cycle begins again.lakes

Activity 17. We are going to listen to some sentences about the uses of water. Listen to the following sentences and order the images from 1-9 as you hear them

Uses of water

Water is necessary for life. Water is scarce and we should not waste it.

We use water:

1. For personal hygiene2. For washing and cleaning3. For watering fields of crops4. For watering plants5. For cooking6. For animals7. For doing water sports8. For making electricity in the hydroelectric centres9. For drinking

9Material AICLE. 5º de Primaria.: Water on our planet (Solucionario)

Activity 18. Now listen and complete the sentences. When you finish, addanother sentence or picture that explains a new use for water

Uses of water

Water is necessary for life. Water is scarce and we should not waste it.

We use water:

1. For personal hygiene2. For washing and cleaning3. For watering fields of crops4. For watering plants5. For cooking6. For animals7. For doing water sports8. For making electricity in the hydroelectric centres9. For drinking10. For the toilet11. For painting12. For brushing your teeth13. For the washing machine14. For the dishwasher

Activity 19. Now listen to some sentences about saving water. Number the images from 1-6 as you hear them

HOW TO SAVE WATER

1. Turn off the tap when you brush your teeth2. Use less water: take a short shower instead of a bath3. Reduce the quantity of water in the toilet tank4. Wait until the dishwasher is full before turning it on5. Only water the roots of the plants6. Wait until the washing machine is full before turning it on