How often do earthquakes occur globally each year?

• Several million times

• A few thousand times

• Once or twice

• Hundreds of times

Which earthquake had a magnitude of 9.1 on the Richter scale?

• The one in Indonesia

• The one in Japan

• The one in California

• The one in Chile

What is the highest magnitude recorded on the Richter scale for an earthquake?

• 9.5

• 10

• 8.9

• 9.1

What layer of the Earth is directly beneath the crust?

• Outer core

• Mantle

• Lithosphere

• Inner core

What causes the Earth to shake during an earthquake?

• Strong winds

• Volcanic eruptions

• Movement of tectonic plates

• Ocean waves