Chapter 2

What is the primary cause of the different seasons on Earth?

• Earth's rotation on its axis

• Earth's orbit around the sun

• The tilt of Earth's axis as it orbits the sun

• The distance of Earth from the sun

Which of the following layers of Earth is composed of solid rock?

• Inner core

• Outer core

• Mantle

• Crust

What percentage of Earth's water is salt water?

• 70%

• 80%

• 90%

• 97%

Which of these processes breaks down rocks through natural forces like rain and ice?

• Erosion

• Weathering

• Plate tectonics

• Condensation

Which ocean is not one of the world’s four largest oceans?

• Pacific Ocean

• Indian Ocean

• Southern Ocean

• Arctic Ocean

What is the thickest layer of Earth?

• Crust

• Mantle

• Inner core

• Outer core

Which climate zone is characterized by very low temperatures and ice-covered land?

• Tropical

• Desert

• Polar

• Humid temperate

What phenomenon occurs due to the movement of tectonic plates?

• Water cycle

• Formation of land features

• Ocean currents

• Global warming

Which of the following is a cause of global warming mentioned in the text?

• Ocean currents

• Human activities

• Tectonic plate movement

• Natural disasters

Which layer of Earth contains melted, liquid metal?

• Crust

• Mantle

• Outer core

• Inner core