P4 REVIEW CHAPTER 7-10

Which layer of the Earth is made of iron and some nickel?

• crust

• mantle

• core

Which physical layer is the thinnest?

• crust
• mantle
• core

Which is the hottest layer and has the most pressure on it?

• Crust
• Mantle
• Outer Core
• Inner core

The outermost layer of the earth's structure is indicated by the number ....

• 1

• 2

• 3

• 4

The center of the earth is....

• crust

• mantle

• outer core

• inner core

What is at the center of our Solar System and also the largest object in it?

• Earth

• Jupiter

• The Sun

• The Moon

The inner planets are _______ than the outer planets.

• colder

• bigger

• warmer

• smarter

All of the inner planets are made of _________ material.

• liquid

• icey

• rocky

• gassy

What is the only planet that supports life?

• Mars

• Neptune

• Earth

• Saturn

The planets of the solar system revolve around the Sun in orbits because of the Sun's —

• gravity

• rotation

• heat energy

• magnetic field