Plate Tectonics

Which of the following occurs because of convection currents?

• Tectonic plates on the crust move.
• The mantle increases in size.
• Pressure in the crust increases.
• Pressure in the crust decreases.

Scientists think that convection currents that move the plates flow in Earth's

• Continental crust
• Oceanic crust
• Asthenosphere
• Lithosphere

The mantle of Earth is made partly of magma. When magma rises and sinks, this is called ______________. 

• a conduction current
• a hot spot
• a volcanic eruption
• a convection current

What was the name given to all the continents when they were joined as one super continent? 

• Supreme Continent
• Eurasia
• Plate tectonics
• Pangea

Which of the following causes Earth's tectonic plates to move?

• Energy from the Sun
• Magnetic Pole Reversal
• Convection currents in the mantle
• Faults in Mountain Ranges

Which of the following is NOT evidence to support the theory of plate tectonics?

• Fossils
• Mountains
• Glaciers
• Sand Erosion

The theory that says Earth's continents once made up an ancient supercontinent, and have been drifting apart ever since, is called the theory of...

• Pangea
• Plate Tectonics
• Natural Selection
• Gravity

If a mid-ocean ridge is in the center of this picture, where would the oldest rock be found?

• L
• M
• N
• O

How is it possible for new crust to be formed without increasing the surface area of the Earth?

• Crust is destroyed at the same time it is created
• New crust is underwater where it sinks
• New crust breaks more easily than old crust

The Great Rift Valley in Africa and the Mid-Ocean Ridge were all created by this type of boundary

• Divergent
• Convergent
• Reform
• Transform