Which of Earth's layers is the largest?

• The crust

• The mantle

• The outer core

• The inner core

All of Earth's layers are solid.

• True

• False

What is the approximate age of the Earth?

• 550,000 years

• 2.2 million years

• 4.5 billion years

• 190 million years

What percentage of Earth's surface is covered with water?

• 50%

• 20%

• 90%

• 75%

Melted rock that is underground is called...

• Lava

• Magma

• Fire

• Metamorphic

The Earth's continents were once all connected.

• True

• False

The earth's outer layer is broken into parts called...

• continents

• plates

• bases

• ranges

Earthquakes are caused by...

• Tornados and hurricanes

• The movement of Earth's plates

• The wind

• Explosions under the Earth's surface

Which of the following does NOT erupt from a volcano?

• Lava

• Ash

• Gases

• Water

Earthquakes and volcanic eruptions are most likely to happen....

• in warm places.

• on the edges of the Earth's plates.

• during the winter months.

• near the ocean.