Earth's Layers/Plate Tectonics

Who is the scientist who proposed Continental Drift Theory?

• Albert Einstein
• Alfred Wegener
• Isaac Newton
• John Dalton

Alfred Wegener named his single supercontinent ____________, which means "all Earth" in ancient Greek.

• Pandora

• Gandowandaland

• Pangea

• Percia

Most geologists think that the movement of Earth's tectonic plates is caused by

• the rotation of the Earth.

• the Earth's magnetic field.

• subduction.

• convection currents.

When plates collide we get ________.

• crumbles

• volcanos

• trenches

• mountain ranges

Associated with transform boundaries.

• Volcanoes
• mountains
• trenches
• earthquakes

A location where two tectonic plates collide is known as a _________ boundary.

• Convergent
• Divergent
• Transform
• Spreading

Subduction means.....

• The more dense plate plate goes under a less dense plate

• two plates slide past each other

• two plate collide and form folded mountains

Sea-floor spreading explains how.....

• new crust is created at a divergent boundary

• volcanoes are formed on continents

• deep sea trenches are formed

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

What type of event will occur at this boundary?

• Earthquake
• Volcano Eruption
• Tornado
• Mountain Building