Cycles of Matter. Matter Matter is recycled in an ecosystem, unlike energy. What is it? Anything that has mass and takes up space.

Cycles of Matter

Matter• Matter is recycled in an ecosystem,

unlike energy.

• What is it? Anything that has mass and takes up space.

WATER RECYCLES

Water Cycle

Condensation

The Water Cyclecondensation

Water Cycle

• It is a continuous process by which water moves from the Earth’s surface to the atmosphere and back.

• It includes the processes of– Evaporation– Condensation– Precipitation

Evaporation

Occurs when energy from the sun heats water causing the water molecules to become so active that some of them rise into the atmosphere as vapor.

Evaporation Liquid Gas

add heat energy

Condensation

Gas Liquidtake away heat energy

Condensation• Condensation

is the process of water changing from water vapor to tiny droplets of water.

Precipitation liquid or solid

Rain, snow, sleet or hail

What is a water molecule?

Two hydrogen atoms and one oxygen atom.

It is written as H20.

Ice cube – solid phase

Water – liquid phase

Water vapor - gas phase

When heat energy is added to water molecules, they move faster and

further apart.

Solid form of water

A drop of liquid water

Vapor form of water

Do the water molecules change what they look like when they change phase?

No, they are still H2O!

The water molecules only change in speed and the distance from

each other.

Water Cycle

Condensation