TCI Rock Strata Quiz

1. ______________ determines the age of a rock by comparing it to the rocks around it.

• A. Relative dating
• B. absolute dating
• C. Dependent datin
• D. Independent dating

2. Where do volcanoes form?

• A. hot spots
• B. convergent boundaries
• C. divergent boundaries
• D. All of the above

3. A hot spot is a place where __________ from the mantle rises to the crust.

• A. fire
• B. magma
• C. solid rock
• D. molten iron

4. Rock layers below are __________ rock layers above.

• A. younger than
• B. older than
• C. the same age as
• D. either older or younger than

5. What kind of rock does absolute dating work for?

• A. igneous
• B. metamorphic
• C. sedimentary
• D. thickly layered

6. For the law of superposition to hold true, the layers of rock must be _____________.

• A. eroded
• B. weathered
• C. igneous
• D. undisturbed

7. Why is the Grand Canyon a good place to study rock layers?

• A. It is older than any other location
• B. It is undisturbed by erosion or weathering.
• C. Lots of layers have been uncovered by river erosion.
• D. Volcanoes have laid down many layers of igneous rock that can be absolutely dated

8. It is reasonable to guess that rock layers on either side of a gap are the same age because of the principle of ___________.

• A. superposition
• B. lateral continuity
• C. original horizontality
• D. cross-cutting relationships

9. What can cause rock layers to fold?

• A. gravity
• B. braces
• C. volcanic eruptions
• D. tectonic forces

10. According to the principle of ____________, rock layers form in ________ layers due to gravity

• A. superposition
• B. lateral continuity, vertical
• C. original horizontality; horizontal
• D. cross-cutting relationships