Complete the following sentence using the information from the article.
Seventy percent of the Earth's surface is covered in ________.

• gas
• water
• land
• buidlings

Complete the following sentence using the information from the article.
Earth is ____________ years old.

• 4.5 billion
• 93 million
• 4.5  million
• 93 billion

Complete the following sentence using the information from the article.
Earth is the _______ planet from the sun.

• first
• second
• third
• fifth

Complete the following sentence using the information from the article.
Earth is the ______ largest planet in our solar system.

• third
• fifth
• fourth
• second

Complete the following sentence using the information from the article.
Earth is ______ miles away from the sun.

• 93 million
• 4.5 billion
• 93 billion
• 45 million

What causes the day and night?

• The rotation of Earth.
• The moon moving around the Earth.
• Earth orbiting the sun.
• Wind moving across the Earth.

Which sentence from the first paragraph is an opinion?

• Earth is the only place in the entire universe where we know that life exists.
• That makes Earth very special.
• That means Earth doesn't get to hot or cold, unlike all the other planets.

Which sentence correctly describes the Earth's layers?

• The crust is below the mantle.
• The mantel is below the core.
• The mantle is above the crust.
• The mantle is below the crust.

Scientist who study the Earth are called...

• geologists
• geography
• geomotrists
• geologicalists

How did Mars get its reddish color?

• From rust and other minerals in its soil.
• From Martians leaving trash laying around.
• From the Earth.
• From blood.