Planet Earth Chapter 2

Another word for "move around."

• Orbit

• Swing

• Revolution

• Axis

An imaginary line that runs through Earth's center from the North Pole to the South Pole.

• A line

• Axis

• Rotation

• Climate

The Earth's complete trip around the sun takes how many days?

• 360 1/2

• 245 1/4

• 365 1/4

• 481 1/2

Every 4 years we add an extra day in what month?

• January

• February

• March

• April

Earth completes a ROTATION every __________.

• 36 hours

• 30 days

• 4 months

• 24 hours.

The Earth is made up of 3 layers. Name those three layers.

• The core, the mantle, and the crust.

• The core, the center, and the top layer.

• The top, middle, and center layer.

• The end, middle, and beginning.

Melted rock is also known as _______.

• Hot rock

• Mantle

• Magma

• Fire

The Earth has 4 major subsystems. Which one is NOT one of those systems.

• Hydrosphere

• Lithosphere

• Solstice

• Biosphere

What percentage of the Earth's water is freshwater?

• 5%

• 9%

• 15%

• 3%

Can you substitute salt water for fresh water if you run out of fresh water?

• Yes

• No