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Name Class Date 3.3 Earth’s Spheres The Geosphere 1. Complete the following paragraph with terms from the word bank. asthenosphere The core crust geosphere mantle tectonic plates is made up of all the rocks and minerals on or below Earth’s surface. The outer part of the geosphere is called the , which forms the land we live on as well as the ocean bottom. The hot rock beneath this layer is known as the and includes the uppermost lithosphere as well as the softer . As this layer moves, it drags large sections of lithosphere, called , across Earth’s surface. Earth’s center is called the and is made up of molten and solid metals. 2. How does plate tectonics influence the characteristics of Earth’s surface? 3. Define the three different types of plate boundaries. 4. On the lines below, write a paragraph that describes the distribution of salt water and fresh water on Earth. 5. Describe two human activities that can affect the water cycle. The Biosphere and Atmosphere 6. Why is Earth’s biosphere called “the living Earth”? 7. Define ozone and explain its purpose. 8. How do the greenhouse gases in Earth’s atmosphere affect our environment? The Hydrosphere For Questions 7–12, match each term with the statement that best describes it. 9. evaporation 10. transpiration 11. precipitation 12. condensation 13. aquifer 14. water table a. the process by which water in a lake becomes water vapor b. the upper limit of fresh water stored underground c. the process by which water vapor in the air becomes dew d. the process by which blades of grass release water vapor e. rain or snow f. the place where fresh water collects underground