Earthquake

What is the point below the Earth’s surface where an earthquake originates called?

• a) Epicenter

• b) Focus

• c) Fault line

• d) Seismic wave

Which scale is used to measure the strength of an earthquake?

• a) Celsius scale

• b) Richter scale

• c) Beaufort scale

• d) Kelvin scale

What is the difference between the focus and the epicenter of an earthquake?

• a) The focus is the point on the Earth’s surface directly above the origin of the earthquake, while the epicenter is the point below the surface where the earthquake originates.

• b) The focus is the point on the Earth’s surface directly above the origin of the earthquake, while the epicenter is the point on the fault line where the earthquake originates.

• c) The focus is the point below the Earth’s where the earthquake originates, while the epicenter is the point on the Earth’s surface directly above the origin of the earthquake.

• d) The focus and the epicenter are the same thing.

What is the main difference between Strato-volcanoes and Shield volcanoes?

• a) Strato-volcanoes are flatter and less violent than Shield volcanoes.

• b) Shield volcanoes are flatter and less violent than Strato-volcanoes.

• c) Strato-volcanoes are formed by magma leaking through weaknesses in the Earth’s crust.

• d) Shield volcanoes are formed by magma leaking through weaknesses in the Earth’s crust.

What is the term for molten rock below the Earth’s surface?

• a) Lava

• b) Magma

• c) Ash

• d) Vent

What is the term for molten rock that has erupted onto the Earth’s surface?

• a) Lava

• b) Magma

• c) Ash

• d) Vent

The Earth’s surface is made up of large, rigid pieces called:

Answer: b) Tectonic plates

• a) Continents

• b) Tectonic plates

• c) Lithosphere

• d) Mantle

Where are earthquakes and volcanoes most likely to occur?

• a) In the center of tectonic plates

• b) Along plate boundaries

• c) On stable sections of the Earth’s crust

• d) In the ocean

The average speed of plate movement is approximately:

• a) 10 mm per year

• b) 40 mm per year

• c) 100 mm per year

• d) 1000 mm per year

* What is a subduction zone?

• a) Where two plates move apart.

• b) Where one plate slides beneath another.

• c) Where plates slide past each other horizontally.

• d) Where a volcano erupts.