Water Cycle (a)
Water in the form of gas
water vapor
Why does rain fall down instead of up?
Gravity
This is is the process water breaking in to cracks in the soil
Infiltration
The is the process where a solid changes directly into a gas.
sublimation
What is water that moves over the land surface
Runoff
Plants contribute to the water cycle through this process?
transpiration
This percentage of water is fresh water on Earth.
3%
Out of the freshwater available for humans to use, most of it is found where?
Groundwater
Why does water vapor condense into clouds?
Because the temperature
What is it called when water moves from the atmosphere to the earth?
precipitation.
Name three forms of precipitation.
rain, hail, sleet, and snow.
A group of tiny water droplets in the atmosphere.
a cloud.
State of matter when water is frozen.
a solid.
What is the process of turning from a liquid to a gas called?
evaporation
Where does the water cycle begin and end?
It doesn't. It is a never ending cycle
When water changes from a solid to a liquid.
melting.
Where is most of the water on Earth stored
Oceans
The energy source that drives the water cycle.
the Sun
The percentage of the Earth that is covered by water?
What is 71%
What is it called when water travels through oceans, the atmosphere and land over and over again.
the water cycle.
What percentage of all the water on Earth is salty?
97%
Most of the freshwater, 2/3, is unavailable to humans because it is
Frozen
Why does water evaporate?
Because heat is added
When water vapor changes to a liquid
condensation.
this is water that gathers under the Earth's surface?
groundwater