Unit 1 Lesson 3 Water Cycle

Unit 1 Lesson 3 Water Cycle

I will learn how energy is involved in changing water's state and how water is constantly moving and cycling all over Earth.

Where Water is Found on Earth

Water is found everywhere on Earth. It exists in many different forms. Water covers 70% of Earth. About 97% of Earth's water is salt water. The rest is fresh water, and of that fresh water humans only have access to .3%.

Multiple Choice

Why can't humans, animals and plants use most of the water on Earth?

• it's too salty

• we can use all of the water on Earth

• it's too far underground

The Importance of Water on Earth

Water shapes Earth's surface through weathering and erosion. It also influences Earth's weather through the Water Cycle. You depend on clean, fresh water. Only a limited amount of fresh water is available.

Multiple Choice

How does water shape Earth's surface?

• through the atmosphere

• by Weathering and Erosion

The Earth contains The Earth contains three states of water: solids, liquids and gases.

• Solids can be in the form of ice crystals, snowflakes, ice, hail, and snow.

• Most of Earth's water is liquid. Liquids flow freely taking on the shape of any container.

• Most water vapor is in Earth's atmosphere. We cannot see water vapor. A gas will fill the shape of any contain.

Multiple Choice

What are the 3 states of matter?

• Weathering, erosion & deposition

• solid, liquid, plants

• solid, liquid, gas

Multiple Choice

Where is most water vapor found?

• in the atmosphere

• in the hydrosphere

• in the geosphere

• in the biosphere

Water's Changing State

• When the temperature of water rises, it can absorb thermal energy.

• As water absorbs energy it can change from a solid to a liquid.

• From a liquid to a gas.

• From a solid to a gas.

Multiple Choice

If water gains energy it can change from a...

• solid to a liquid

• liquid to a solid

Water's Changing State

• Water can lose energy to its surroundings and change state in the opposite direction.

• As energy is released, it can change from gas to a liquid

• liquid to a solid

• gas to a solid

Multiple Choice

If water loses energy, it changes from:

• a liquid to a solid

• solid to a liquid

Multiple Choice

Choose if the water is gaining or losing energy in this picture of ice melting.

• gaining energy

• losing energy

Multiple Choice

Choose if the water is gaining or losing energy in the picture of it snowing.

• gaining energy

• losing energy