Unit 4: Natural disasters Vocabulary

What are seismic waves generated by?

• Sudden release of energy in the Earth's crust

• Ocean currents

• Wind patterns

• Solar flares

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What causes tsunami waves?

• Underwater disturbances

• Wind

• Rain

• Solar activity

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What can tsunamis cause in coastal areas?

• Catastrophic flooding

• Snowfall

• Drought

• Heatwaves

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What are sound waves?

• Vibrations that travel through air, water, or solids

• Light waves

• Heat waves

• Magnetic waves

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How do sound waves travel?

• At different speeds depending on the medium

• At the same speed in all mediums

• Only in air

• Only in water

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What is the movement of particles in longitudinal waves?

• Parallel to wave direction

• Perpendicular to wave direction

• Circular

• Stationary

What is the speed range of tsunami waves across the ocean?

• Up to 500-600 mph

• Up to 100 mph

• Up to 200 mph

• Up to 300 mph

What happens to tsunami waves as they approach shallow coastal waters?

• They grow in height

• They disappear

• They slow down

• They change direction

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What are electromagnetic waves?

• Waves that require a medium to travel

• Waves of energy that travel through space without a medium

• Waves that only travel through water

• Waves that are visible to the human eye

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How can electromagnetic waves be connected to natural disasters?

• They directly cause earthquakes

• They are used in monitoring natural disasters

• They cause volcanic eruptions

• They are responsible for tsunamis

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