The Water Cycle
1. Read:
The earth has a limited amount of water. The existence and movement of this water is described
as the "Water Cycle". This cycle is made up of a few main parts:
Evaporation is when the sun heats up water in rivers or lakes or the ocean and turns it into vapor. The water
vapor leaves the river, lake or ocean and goes into the air. (1)
Condensation: Water vapor in the air gets cold and changes back into liquid, forming clouds. This is called
condensation. (1)
Precipitation: Precipitation occurs when so much water has condensed that the air cannot hold it anymore. The
clouds get heavy and water falls back to the earth in the form of rain, hail, sleet or snow. (1)
Collection: When water falls back to the ground as precipitation, it may fall back in the oceans, lakes or rivers
or it may end up on the land. When it ends up on the land, it will either soak into the ground and become part
of the “ground water”, where plants and animals drink it, or it may run over the soil and collect in the oceans,
lakes or rivers where the cycle starts all over again. (1)
2. Use the diagram to identify the different parts of the water cycle:
A:
B:
C:
D:
Obr. 3 vytvořen autorkami pracovních listů
3. Fill in the missing words:
water cycle – water – ocean – evaporation – rain
A substance that is very important to us. We need it to live.
A large body of water on the surface of the Earth. __________________________
A process in which liquid water turns into water vapor _______________________
This type of precipitation is water that falls from clouds in a liquid state. ________
The process in which water circulates from the oceans to the clouds to the land to the
rivers, and then accumulates back into the oceans. ___
__________________________
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Name:
Class: 8
Zdroje:
(1) The water cycle. Kid Zone < http://www.kidzone.ws/water/ >
Tento projekt je spolufinancován Evropským sociálním fondem a státním rozpočtem České republiky