Chapter 2 water scarcity

For how many years has forces of wind and water worked to form Earths surface?

• one thousand

• billions

• millions

• 10

Earth's landforms continue to what?

• grow

• learn

• develop

• spin

How many planets Orbit the sun?

• 25

• 8

• 10

• 100

Which is not one of the names of the farther outer planets?

• Comet

• Saturn

• Neptune

• Jupiter

Are the inner planets?

• full of magma

• hot

• dry

• terrestriaI

What are the Outer Planets called?

• gas giants

• magma rocks

• crust

which planet allows liquid water to exist because of its relation to the Sun?

• Neptune

• Mars

• Earth

• Saturn

what else does Earths relation to the sun allow to exist besides water ?

• food

• land

• life forms

• Pets

How much of the Earth is water?

• 65%

• 95%

• 20%

• 70%

what is the name of Earth's crust?

• lithosphere

• hydrosphere

• mantle

• biosphere