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Chapter 8 Lesson 1
Questions
Question | Answer |
---|---|
The opposite of uplift is... | Deject. |
The balance between the crust and the mantle below it is... | Isostasy. |
Explain the difference between the two types of strain. | Elastic strain is a permanetly changed or deformed rocks. Plastic strain creates permanent change in shape. |
Describe what happens to the elevations of the land surface when the crust thickens. | The elevation of the land surface tends to increase. |
Name one result of rock failure. | Relative motion of individual mineral grains and cements. |
Which type of deformation is produced by compression of plastic crust? | Folds. |
Copy the graphic organizer below, and use it to show three types of stress. (Describe the three types of stress) | Shear: Stress that causes rocks to slip past each other. Compression: Stress which causes rock to squeeze or push against other rock. Strain: A deformation or change in the shape of the material. |
Identify the type of stress that deformed the rocks. What kind of strain resulted from the stress? | Elastic strain, ductile strain, or fracture. |
Predict what would happen to the height of the land surface of Antarctica if the ice sheet started to melt. | The height of the land surface in Antarctica would initially rise slightly due to isostatic rebound as the ice sheet melts, but over the long term. |
Reflect on the relationship between vertical and horizontal motion. How are they related? When are they not related. | The horizontal motion of a projectile is independent of its vertical motion. The vertical motion is changing, but the horizontal motion is constant. |