Question

part a: multiple choice (select the best answer) 1. what are tectonic plates? a) large pieces of the earths crust that float on the mantle b) layers of gas surrounding the earth c) rocks broken down by erosion d) frozen water masses on the continents 2. what causes tectonic movement? a) winds in the atmosphere b) heat and convection currents in the mantle c) melting glaciers d) earths rotation 3. which best describes continental drift? a) the breaking down of rocks into smaller particles b) the movement of continents over millions of years c) a sudden volcanic eruption d) the process of water evaporating into the atmosphere 4. pangea was: a) a single landmass supercontinent that existed millions of years ago b) the current arrangement of continents c) the deepest layer of the ocean d) a type of tectonic plate boundary 5. the continuous movement of water on, above, and below earths surface is called: a) the water table b) the water cycle c) erosion d) hydrosphere

Explanation:

1. Tectonic plates are large pieces of the Earth's crust that float on the mantle.
2. Tectonic movement is caused by heat and convection currents in the mantle.
3. Continental drift is the movement of continents over millions of years.
4. Pangaea was a single landmass supercontinent that existed millions of years ago.
5. The continuous movement of water on, above, and below Earth's surface is called the water - cycle.

Answer:

1. A. Large pieces of the Earth's crust that float on the mantle
2. B. Heat and convection currents in the mantle
3. B. The movement of continents over millions of years
4. A. A single landmass supercontinent that existed millions of years ago
5. B. The water cycle