2.4 water cycle

Question 1

how much water are humans made of? (percentages)

Answer 1

60%

Question 2

what is the water cycle?

Answer 2

it is the continuous system of recycling water

Question 3

what is transpiration?

Answer 3

when water evaporates into the atmosphere from plants

Question 4

what part of the water cycle is condensation?

Answer 4

when little droplets of water from the atmosphere cools in the air, forming clouds

Question 5

what is precipitation?

Answer 5

a form of water that condenses from the atmosphere and falls to the Earth because it is too heavy

Question 6

define the surface run-off

Answer 6

water that reaches the surface of the land and flows directly across the grounds into lakes, rivers, and oceans

Question 7

why does condensation happen?

Answer 7

it happens because the particles in the water vapour lose so much energy and cannot move so quickly

Question 8

what happens when there is a lot of surface run-off

Answer 8

soil can be carried off the land and into rivers