Topic exercise : Water Cycle
1 Diagram 1 shows the formation of clouds and rains.
Water vapour Rain
Water on Earth
Which of the following processes are involved in this phenomenon?
A Boiling and evaporation
B Evaporation and condensation
C Condensation and freezing
D Melting and boiling
2. Which of the following practices can keep our sources of water clean?
A Organize campaign “ Cintailah Sungai”.
B Use of natural fertilizers whenever possible.
C Release of sewage from houses into the sea.
D Don’t flush plastic products down the toilet..
3. Which of the following conditions can increase the rate of the evaporation of water?
I Dry III Hot weather
II Wet IV Cold weather
A I and II only
B I and III only
C II and IV only
D III and IV only
4. A group of pupils boil 100ml of water. After a few minutes, the volume of the water decreases. What can you infer ?
A Some of the water changed into steam.
B Some of the water changed into ice.
C The beaker absorbed the water.
D Water is condensed.