M2 Science: Chapter 7 Review

Which layer of the Earth makes up about 70% of the mass of Earth and is made out of primarily silicon, magnesium, oxygen, and iron?

• Crust
• Inner Core

• Mantle
• Outer core

Which of the following is not true about the crust?

• It is made up of rocks and minerals

• It is covered by water, sand, soil, and ice

• Its continents are about 3500 km thick

• It makes up less than 1% of Earth's mass

Which of the following is a process that helps shape the surface of the Earth?

• Weathering

• Erosion
• Deposition

• All of the above

What is weathering?

• The process where a rock is broken down into ice

• The process where a rock is broken down into small pieces

• The process where a rcok is broken down into minerals

• The process where a rock is broken down into boulders

Which of the following are causes of physical weathering?

• Temperature

• Living things

• Wind

What is the main cause of erosion on Earth?

• Water

• Living organisms

• Gravity

• Temperature

Which of the following energy sources in non-renewable?

• Oil shale

• Biomass

• Running water

• Wind

Which of the following is true about deposition?

• Movement of sediments continues until sand dunes are formed

• Movement of sediments slows or stops and the sediments are dropped

• Rocks and soil materials are transported by natural agents

• Rocks are broken down by chemical reactions

Coal, Petroleum, and Natural Gas can all be grouped as...

• radioactive substances

• fossil fuels

• geothermal

• biomass

Which of the following is a step which helps us conserving the sources of energy?

• Use personal vehicles more often

• Use electrical appliances which require higher power

• Recycle papers

• Increase the consumption of fossil fuels