Chapter 1: The Water Cycle

Question 1

Condensation

Answer 1

Water vapour in the air gets cold and changes back into liquid, forming clouds.

Question 2

precipitation

Answer 2

occurs when so much water has condensed that air cannot hold it anymore. The clouds get heavy and water falls back to earth in the form of rain, sleet, hail or snow.

Question 3

evaporation

Answer 3

occurs when the sun heats up water and turns it into vapour or steam. The water vapour or steam leaves the river, lake or ocean and goes into the air.

Question 4

Transpiration

Answer 4

Transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flowers

Question 5

Surface run-off

Answer 5

the flow of water that occurs when excess water flows over the Earth’s surface.

Question 6

infiltration

Answer 6

the process by which precipitation or water soaks into subsurface soils and moves into rocks through cracks and pore spaces