3.2 Plate Tectonics

What does the theory of plate tectonics explain about the continents?

• It explains why the continents remain stationary.

• It explains how the continents continue to move.

• It explains the population distribution on continents.

• It explains the economic development of continents.

What is a seismograph?

• A map showing the distribution of seismic activity.

• A device used to measure the movement of Earth's surface.

• A tool for predicting the weather.

• A machine that generates artificial earthquakes.

How common are earthquakes across the planet?

• Earthquakes occur uniformly across the planet.

• Earthquakes do not occur on the planet.

• Earthquakes are very common in some areas and very rare in others.

• Earthquakes only occur in the ocean.

What can occur due to the shifting and constant movement of tectonic plates?

• Earthquakes and volcanoes

• Tornadoes and hurricanes

• Tsunamis and floods

• Droughts and heatwaves

What do plate boundaries show us?

• The location of the most recent earthquake

• The outline of the tectonic plates

• The depth of the ocean floor

• The height of mountain ranges

Where do most earthquakes occur?

• In the center of tectonic plates

• At the boundaries between continental and oceanic plates

• On the surface of the ocean

• At the poles of the Earth

How fast do these tectonic plates move?

• More than 10 meters per year

• Less than a few centimeters per year

• Exactly 1 meter per year

• They do not move

What happens to the heat as it moves closer to Earth's core?

• It decreases

• It remains constant

• It increases

• It fluctuates

What is the result of heat rising from Earth's core towards the surface?

• It cools the mantle

• It has no effect on the mantle

• It melts the layer of rock in the mantle

• It freezes the layer of rock in the mantle

What concept from Unit 1 is occurring in Earth's mantle that is similar to what happens in a soup pot?

• Radiation Current

• Convection Current

• Conduction Current

• Insulation Current