Why do the plates move?
a. Convention currents cause the splitting in the Earth's crust along the mid-ocean ridges
b. The new material pushes the old farther away, thus causing the plates to move
c. External thermal such as sun radiation motivates a dynamic Earth
d. All of the above
e. Both a and b
Answer: e. Both a and b
You might also like to view...
The seasons are primarily due to
A. the distance of Earth from the Sun. B. the tilt of Earth's axis. C. variations in greenhouse gas levels. D. the wavelength of solar radiation.
Is precipitation more likely at Point D or Point C? Why?
The question is based on this hypothetical weather map in the Northern Hemisphere showing isobars and the positions of a cold front and a warm front (top of map is north). Six locations are marked on the map (points A, B, C, D, E, and F). A cross-section diagram along points A, B, C, D, E, and F is shown below the map.
What will be an ideal response?
A Cadillac and a Mini Cooper roll down a hill at the same speed. While rolling the heavier Cadillac has greater
A. acceleration. B. momentum. C. impulse. D. all of the above
Coastal Chinese provinces tend to be wealthier than inland provinces
a. True b. False Indicate whether the statement is true or false