(a)
(b)
(c)
(d)
(e)
(f)
100

When water changes from a solid to a liquid.

melting.

100

A group of tiny water droplets in the atmosphere.

a cloud.

100

When water vapor changes to a liquid

condensation.

100

This is the process where a solid changes directly into a gas.

sublimation

100

True or False - The water you are drinking might be water from millions of years ago.

True

100

The energy source that drives the water cycle.

the Sun

200

Plants contribute to the water cycle through this process?

transpiration

200

Where is most of the water on Earth stored

Oceans

200

State of matter when water is frozen.

a solid.

200

Where does water vapor in the atmosphere  come from?

evaporation from lakes, rivers, and oceans.

200

This percentage of water is fresh water on Earth..

3%

200

Water in the form of gas

water vapor

300

This occurs when a gas is directly converted into a solid?

deposition

300

This is the mechanism through which water travels down through the ground powered by the acceleration due to gravity.

percolation.

300

Animals contibute to the water cycle through this process?

respiration

300

this is water that moves under the Earth's surface?

groundwater

300

What is it called when water travels through oceans, the atmosphere and land over and over again.

the water cycle.

300

What is it called when water moves from the atmosphere to the earth?

precipitation.

400

Name four forms of precipitation.

rain, hail, sleet, and snow.

400

The basis of separation using decantation is

Difference in particle size

400

This is is the process water filtering through the soil to reach groundwater below

Infiltration

400

Why is filtration method more advantageous compared to decantation

It is able to remove tinier particles from the solvent

400

What is it called when rain get so cold it solidifies into small ice balls?

Hail

400

Evaporation and crystallization is used to separate what type of solution

solid and liquid

500

Explain the formation of crystals as solution cools

This is because the solubilty of salt decrease as temperature decreases

500

Butter is separated from milk by

churning

500

Which method is used to separate pebbles and stones from sand?

Sieving

500

Filtration is a method to separate the components of a _____________

mixture of a liquid and an insoluble substance

500

When muddy water is kept overnight in a bucket, the particles of the mud ____________

settle at the bottom.

500

Which methods is used to separate heavier grains from lighter dust particles?

Winnowing