G5 19-3

5.Most of the fresh water on earth is frozen

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Most of the Earth's water is __________ water.

• fresh

• land

• salt

• frozen

The force of gravity acting on an object is the object's ______.

• mass
• matter
• weight 
• friction 

A person would weigh less on the Moon than on the Earth because . . .

• Moon has more mass, and therefore more gravity

• Moon has less mass, and therefore more gravity

• Moon has more mass, and therefore less gravity

• Moon has less mass and therefore less gravity

As mass increases, what happens to gravitational force?

• increases
• decreases
• stays the same
• i don't know

When an apple falls to the ground, what is happening?

• Gravity pushes the apple up, away from the Earth.

• Gravity pulls the apple down, towards the Earth.

• Magnetism pushes the apple up, away from the Earth.

• Magnetism pulls the apple down, towards the Earth.

Water absorbs energy from its surroundings as it

• freezes

• evaporates

• condenses

• deposits

What happens to the water vapour when it condenses?

• Changes into solid

• It changes into liquid

A natural system linked by living (plants, animals) and nonliving (soil, air, water) things?

• Ecosystem
• Riverbasin
• Watershed
• Estuary

An estuary is made up of what kind of H20?

• Saltwater only

• Freshwater only

• Salt & Fresh water

• What is H20 even mean?