Causes of Earthquakes

What is the primary cause of earthquakes?

• Volcanic eruptions

• Tornadoes

• Plate tectonics

• Human activities

Which of the following describes the process that leads to most earthquakes?

• Tidal forces from the moon

• Movement of molten lava beneath the Earth's surface

• Friction and stress along fault lines

• Changes in atmospheric pressure

What primarily causes earthquakes?

• Movement of glaciers

• Volcanic eruptions

• Movements of tectonic plates

• Shifting ocean currents

Where do most earthquakes occur?

• In the Earth's core

• In deep underground caverns

• At the Earth's mantle

• Along fault lines in the Earth's crust

What happens when the rocks on either side of a fault line absorb too much pressure?

• They turn into magma

• They create new fault lines

• They stretch and release shock waves

• They become denser

What is the point on the Earth's surface directly above the focus of an earthquake called?

• Epicenter

• Seismic point

• Tectonic center

• Hypocenter

How are seismic waves generated during an earthquake?

• By volcanic activity

• By ocean currents

• By the movement of tectonic plates

• By meteorite impacts

What term is used to describe the size of an earthquake?

• Intensity

• Magnitude

• Richter Scale

• Amplitude

What does a higher magnitude value indicate?

• The earthquake occurred in a remote location

• The earthquake was less powerful

• The earthquake was more powerful

• The earthquake had no significant impact