Earthquakes Quiz

What are earthquakes a powerful reminder of?

• The calmness of the Earth

• The dynamic forces that constantly reshape our planet

• The stability of tectonic plates

• The peacefulness of nature

What is the Earth's crust fractured into?

• Small pebbles

• Giant, rigid slabs called tectonic plates

• Liquid magma

• Soft soil layers

What drives the movement of tectonic plates?

• The Earth's internal heat

• Ocean currents

• Wind patterns

• Human activities

What does the magnitude of an earthquake reflect?

• The total energy released at the source of the earthquake

• The duration of the earthquake

• The number of aftershocks

• The depth of the earthquake

What scale is used to measure the magnitude of an earthquake?

• The Modified Mercalli Intensity (MMI) scale

• The Richter scale

• The Beaufort scale

• The Fujita scale

What does each whole number increase on the Richter scale represent?

• A tenfold increase in energy

• A doubling of the earthquake's duration

• A decrease in the earthquake's intensity

• A halving of the earthquake's depth

What does the intensity of an earthquake describe?

• The shaking experienced at a particular location

• The total energy released at the source

• The duration of the earthquake

• The depth of the earthquake

What scale is used to measure the intensity of an earthquake?

• The Richter scale

• The Modified Mercalli Intensity (MMI) scale

• The Beaufort scale

• The Fujita scale

How is the MMI scale different from the Richter scale?

• The MMI scale is not numerical

• The MMI scale measures energy release

• The MMI scale measures earthquake depth

• The MMI scale measures earthquake duration

Which scale measures earthquake strength on a numerical scale from 1 to 10?

• Modified Mercalli Intensity (MMI) scale

• Richter scale

• Fujita scale

• Saffir-Simpson scale