EKU GLY 108 QoD Review

The following maps show the position of the Earth’s continents and oceans. The circles on each map mark the locations where volcanic eruptions occur.  Which map do you think most closely represents the places where these volcanoes are typically observed?

• A
• B
• D
• E

Geologists say that some low mountains today were once much higher.  What kind of evidence do scientists use to support such a statement?

• The amount of volcanic activity in and around the mountains.
• The number and strength of earthquakes in and around the mountains.
• Examination of the rock structures and kinds of rocks forming the mountains.
• Geologic data that predict that very tall mountains have always existed on Earth.

Which of these is a piece of scientific evidence for plate tectonics?

• The location patterns of earthquakes.
• The path of the Gulf Stream.
• The Earth’s magnetic field.
• The tilt of the Earth on its axis.

Which of the following techniques can geoscientists use to gather evidence about whether the very center of the Earth is mostly a solid, a liquid, or a gas?

• Drilling through the center of the Earth
• Studying seismic waves
• Analyzing pictures taken by satellites
• The tilt ofScientists can’t study the center of the Earth. the Earth on its axis.

Scientists say that the Earth was formed about 4.6 billion years ago.  Since its formation, the total mass of Earth has most probably:

• decreased by about 50% due to atmospheric gases escaping to outer space.
• decreased by about 50% due to organisms converting matter into energy.
• changed very little.
• increased by about 50% due to asteroids and comets hitting it plus volcanic eruptions and mountain building.

Which of the following figures do you believe is most closely related to what you might see if you could cut the Earth in half?

• B
• C
• D
• E

Carlos has a metamorphic rock in his rock collection.  Where did the rock most likely form?

• In a volcano
• In a swamp
• At the bottom of a river
• Deep underground

The portion of Earth with the highest average density is the:

• material in the inner core.
• rock in the lower crust.
• water in deep ocean trenches
• sediments on the seafloor.

If the temperature of Earth’s interior was the same as at the surface, then the movement of the continents would:

• stop
• slow down
• stay the same
• speed up

Geoscientists often talk about the Earth’s tectonic plates and their role in mountain formation, volcanism, and earthquake occurrence.  Which of the following figures most closely represents the location of the Earth’s tectonic plates?

• A
• B
• C
• D