continental rift Explanation: The figure shows a meandering river. A meandering river is a river that winds its way through the landscape.
question
How did the Red Sea, shown between Arabia and Africa in this figure, form?
answer
continental rifting followed by seafloor spreading Explanation: The Red Sea formed as a result of the tectonic breakup of the Arabian Plate and the African Plate. The Arabian Plate is moving northward while the African Plate is moving southward. This movement caused the formation of a rift valley, which is filled by the Red Sea.
question
On this figure of a continental collision, which continent would have had subduction-related magmatism before the collision?
answer
the continent on the right Explanation: The continent that would have had subduction-related magmatism before the collision is the one that is being subducted. In this case, it is the continent on the right.
question
Which feature on this figure is formed by melting of mantle above the slab?
answer
D Explanation: The feature on this figure that is formed by melting of mantle above the slab is the magma chamber. The magma chamber is a large, underground reservoir of molten rock. Magma chambers are found beneath volcanoes, and they are the source of the magma that erupts from volcanoes.
question
On the accompanying figure, what type of feature is located in the area of number 2?
answer
transform fault Explanation: The feature in the area labeled 2" is a mid-ocean ridge. Mid-ocean ridges are underwater mountain ranges that are formed by plate tectonics. The Earth's crust is made up of plates that move around on the planet's surface. When two plates collide, one plate is forced underneath the other. The plate that is forced underneath the other is heated by the Earth's mantle. This heat causes the plate to melt, and the molten rock rises to the surface and forms a mid-ocean ridge."
question
On the accompanying figure, which letter is over the oldest oceanic crust?
answer
A Explanation: The oldest oceanic crust would be under the letter A" because that is where the oldest rocks are found. The rocks under the letter "B" are younger than the rocks under the letter "A"."
question
Which of the following statements is true?
answer
earthquakes are more widespread than volcanoes or high mountains
question
Which way are plates moving in this figure?
answer
away from each other
question
Why does the Tibetan Plateau, shown in this figure, have a high elevation?
answer
continental collision
question
How fast do plates move relative to one another?
answer
centimeters per year Explanation: Plates move at different speeds relative to one another. The speed at which they move is determined by a variety of factors, including the type of plate boundary, the age and thickness of the plate, and the amount of heat and mantle convection beneath the plate.
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