Questions and awnsers
By: Marco Molldrem
1.What evidence did Alfred Wegener use to support his theory of continental drift?
2. Why do you think people didn't believe the continental drift theory when Wegner first explained it?
3. Who were the 2 scientists that brought forth supporting evidence to Wegner's theory and what was their eveidence?
4. What are the three types of plate boundaries?
The three types of plate boundaries are convergent boundaries, divergent boundaries, and transform boundaries. A convergent boundary is where two tectonic plates crash or crunch together. At a divergent boundary, plates come apart, think of it as the opposite of a convergent boundary. Last, is a transform boundary, at the transform boundary, two plates slip (slide) past each other.
5. What types of movement can occur between plates and what features can form from this movement?
6. Where are 3 specific examples of a location on Earth where each type of plate boundary is present?
7. What do plate tectonics and ocean trenches have in common
8. and 9. How old are the rocks off the East Coast of North america in relation to the rocks right along the Mid-Atlantic ridge? Why is this the case?
10. What is a convection current?
11. What are the 7 major plate boundaries? (Answer is in picture)
12. and 13. What are two bad events that can happen as a direct result of plate tectonics?
14. and 15. What are three good things that plate tectonics provide for humans and how do plate tectonics cause these good events?
- "Fertile soils-the physical breakdown and chemical weathering of volcanic rocks have formed some of the most fertile soils on Earth".
- "Ore deposits-Rising magma does not always reach the surface to erupt; instead it may slowly cool and harden beneath the volcano to form a wide variety of crystalline rocks (generally called plutonic or granitic rocks)".
- "Fossil fuels-Heat and pressure at depth transform the decomposed organic material into tiny pockets of gas and liquid petroleum, which then migrate through the pore spaces and larger openings in the surrounding rocks and collect in reservoirs, generally within 5 km of the Earth's surface".