Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Chapter 5 Science
Volcanoes,earthquakes, plate tectonics
| Question | Answer |
|---|---|
| lava | material that comes up through the Earth's surface and hardens |
| earthquake | sudden movement of Earth's crust |
| geologist | a scientist who studies the structures and history of the Earth |
| landform | a physical feature on Earth's surface |
| magnitude | measure of the amount of energy released in an earthquake |
| volcano | an opening in the Earth's crust out of which magma flows |
| atmosphere | consists of gases around and above Earth |
| fault | is a crack in Earth's crust |
| hot spot | an unmoving pool of magma below Earth's crust |
| erosion How can we prevent erosion around us? | movement of pieces of weathered rock from one place to another (planting trees, fences on beaches, barricades on hillsides) |
| continental drift | Wegner's theory that the continents once were joined, but over time they drifted to new positions |
| tsunami | giant wave caused by an earthquake under the ocean (photo pg 277) |
| features of the Ocean Floor | the ocean basin, trenches, rift valleys, abyssal plains, mid ocean ridges |
| Why do volcanoes occur/erupt along plate boundaries? | Because plates are always moving, rocks break and fall into the mantle to form magma/magma builds up and is forced out in an eruption |
| How can two landforms, like South America and Africa, that are so far apart be related? | The theory of Continental Drift names three ways we can prove this theory! |
| Explain how erosion and desposition work together using running water. | Water moves down the side of a hill, picks up rocks and soil (eroding) and then deposits this into a larger body of water. |
| Compare an earthquake to throwing a rock in a lake. | An earthquake has a focus point, just like the point the rock hits the water. Waves travel outward in both examples.(pg 274/275) |
| What do earthquakes and volcanoes have in common? | They occur near tectonic plate boundaries. |
| Richter scale measures? | The amount of energy released by an earthquake...the magnitude at the epicenter...rated 1-10 with 10 being the strongest |
| Mercalli Scale measures? | The effects of an earthquake** what people felt and what happened to objects at a specific location (people, land, buildings, road) |
| Difference between chemical and physical weathering? | physical: temperature changes, pushing, pulling or rubbing ** pot holes chemical : chemical breaks down rocks** acid rain (picture pg 285) |
| What forces play a part in movement of the Earth's crust? | compression -- pushes earth's plates together shear -- twists,tears or pushes earth's crust past one another |
| Why does magma rise? | **it is hot**hotter material are less dense, less dense rises above cooler (similar to a hot air balloon) |
Created by:
Team 5
Popular Earth Science sets