On the diagram at right, the Earth\'s Mantle is labeled: The Eatih\'s magnetic f

Question

On the diagram at right, the Earth's Mantle is labeled: The Eatih's magnetic field originates from its: Core Mantle Crust Asthcnoiphere On average, the continental crust is than the oceanic crust denser younger thicker. richer in iron and magnesium ] According to the theory of Isostasy, the reason oceanic lithosphere is so much lower than continental crust because: It is higher density. It is thinner. Both of the above. It is more magnetically attracted to the Faith's core. Which of the following lines of evidence did Alfred Wegener use in the 1920's to support his Theory of Continental Drift? the distribution of ancient mountain ranges. the reconstruction of climatic indicators in the rocks such as glacial and coal deposits. the jigsaw fit of the continents. all of the above. According to Alfred Wegener, all the continents collided together approximately 300 million years ago to form a supercontinent known as: Gondwanaland Pangea Larentia Rodtnia The motion of Earth's rigid outer shell is facilitated by a hot. relatively weak and flowing, partly molten zone in the upper mantle is known as the crust asthenosphere inner core. Most of Earth's seismic activity, volcanism, and mountain building occurs parallel to lines of magnetism along plate boundaries d. on passive continental margins in plate interiors.

Explanation / Answer

1. C

2. A

3. B

4. C

5. D

6. B

7. B

8. B

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