The Age of Earth Unit Test, Unit 7, Lesson 8 Could someone check my answers?
4. Which is correct about the effectiveness of carbon dating?
A: They are both used to determine the relative ages of rocks and fossils.
5. Which statement is correct about carbon dating and index fossils?
A: They are both used to determine absolute ages of rocks and fossils.
7. What is the theory that describes the movement of landmasses on Earth's surface?
A: Continental drift
8. How does the fern Glossopteris provide evidence for the movement of the continents?
A: It was found on many continents.
9. Which is a result of Earth's magnetic poles reversing over time?
A: Magma rising to the ocean floor at mid-ridges.
10. How are earthquakes at Continental plate boundaries different from earthquakes at mid-ocean ridges?
A: They begin closer to Earth's surface.
11. Which describes ocean rocks that are found near mid-ocean ridges?
A: They are younger and form through the cementation of sediments.
12. Fossils of the same life form species have been found in continents that are now decided by oceans. In one to two sentences, explain how this could be possible if a supercontinent did not exist.
A: If a supercontinent didn't exist, then the continents could have been smaller ones that, over time, were separated due to plate movement.
Could someone check my answers please?
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