Unit Test on Water

Where would early settlers most likely start their communities?

• Near rivers or sources of freshwater.
• Near Ocean for easy trading.
• High in the mountains to hide from other settlers.
• Any flat land for farming.

About _______% of the Earth is covered by water.

• 62
• 70
• 89
• 25

______% of Earth's water is salty.

• Less than 1
• 3
• 70
• 97

_______% of Earth's water is fresh.

• Less than 1
• 3
• 70
• 97

Most of the freshwater is _____________.

• Satly
• Frozen in polar ice caps
• Underground
• In the atmosphere & living things

Of the freshwater that is liquid, we get most of our drinking supply from _____________ sources.

• polar ice cap
• river & lake
• water vapor
• underground

How much water is actually useable for humans and other living things?

• 97
• 70
• <1%
• 3

A watershed is an area of ___________ where all the water drains into a particular body of water.

• land
• river
• farm
• space

Water flows from _________ to _________ elevation.

• low to high
• high to low
• high to higher
• low to low

A _____________ separates one watershed from another.

• divide
• mouth
• spring
• flood plain