Earth Science Quiz

What is the outer layer of the Earth mainly composed of?

• Liquid nickel and iron

• Solid nickel and iron

• Mainly solid rock

• Semi-molten rock

Which layer of the Earth is responsible for controlling the Earth's magnetic field?

• Crust

• Mantle

• Outer core

• Inner core

What are tectonic plates?

• Layers of the Earth's atmosphere

• Large pieces of the Earth's crust and mantle

• Sections of the Earth's core

• Parts of the Earth's oceans

Why do tectonic plates move?

• Due to wind currents

• Because of temperature differences inside the Earth

• Because of ocean currents

• Due to gravitational pull from the moon

What happens at convergent boundaries?

• Tectonic plates move apart causing volcanic eruptions.

• Tectonic plates slide past each other causing earthquakes.

• Tectonic plates collide and push upward forming mountains.

• Tectonic plates sink into the ocean.

What is the result of tectonic plates moving apart at divergent boundaries?

• Formation of mountains.

• Volcanic eruptions.

• Earthquakes.

• Formation of valleys.

What occurs at transform boundaries?

• Formation of mountains.

• Volcanic eruptions.

• Earthquakes.

• Formation of lakes.

What is magma called when it reaches the surface?

• Lava

• Ash

• Rock

• Steam

Why is volcanic activity considered constructive?

• It destroys mountains.

• It creates islands and extends coastlines.

• It causes earthquakes.

• It melts glaciers.

What are the cracks in the earth's crust caused by earthquakes called?

• Faults

• Trenches

• Valleys

• Hills