1. How far is the earth from the sun?

Answer: 93 million miles or 150 million kilometers


2. What are the three layers of the earth?

Answer: core, mantle and crust


3. What theory states that the earth is made up of plates or huge slabs of rock that move? This theory also helps to explain the existence of earthquakes and volcanoes.

Answer: Plate tectonic theory


4. Describe the following three landforms and give an example.

Answer: 1. Plateau - a raise piece of flat land. Ex. Plateau of Tibet
2. Isthmus - a narrow piece of land that connects two larger pieces of land. Ex. Isthmus of Panama
3. Peninsula - a piece of land that is surrounded by water on three sides. Ex. Florida


5. Approximately what percentage of the earth's surface is water?

Answer: 70%


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