3rd Prim Social Science Unit 2 Atmosphere

Look at the picture and match the color of the graphic with the right gas.

• Oxygen

• Blue

• Carbon dioxide and water vapour

• Red

• Nitrogen

• Green

The ​ ​ (a)   is where airplanes fly and protect us from the rays of the sun. The ​ (b)   is the coldest layer and protect us from meteors and rocks from space. The ​ (c)   is the nearest layer and is where weather changes occur.

• stratosphere
• mesosphere
• troposphere

Which is the strongest wind?

• Breeze

• Gale

• Hurricane

Which is the lightest wind?

• Breeze

• Gale

• Hurricane

Humidity is the amount of ​ ​ ​ (a)   in the air. Fogs and ​ (b)   occur when there is humidity. We can measure it with the ​ (c)  

• water vapour
• clouds
• hygrometer

Choose three types of precipitation (CHOOSE 3 OPTIONS).

• Fire

• Hail

• Rain

• Snow

Glaciers, rivers and reservoirs have ​ (a)  

Oceans and seas have ​ (b)  

Lakes can have ​ (c)  

• fresh water
• salt water
• fresh or salt water

The rocks underground that store the water are...

• springs

• aquifers

• wells

Water comes to the surface through

• springs

• aquifers

• wells

To access the water underground people used...

• springs

• aquifers

• wells