Nature Disaster

What causes blizzards to occur?

• Sudden movement of the Earth's crust

• Cold air colliding with warm air

• Lack of rain over a period

• Overflow of rivers

What is the main cause of droughts?

• Underwater earthquakes

• High winds

• Lack of rain and human activities like deforestation

• Heavy rains

How are earthquakes generated?

• By underwater volcanic eruptions

• By heavy rains

• By high winds

• By a sudden, violent movement of the Earth's crust

Which natural disaster is most common in the United States?

• Tornadoes

• Wildfires

• Floods

• Earthquakes

What defines a heat wave?

• A long period of rain

• Cold air colliding with warm air

• Higher than normal temperatures for a region

• A very hot summer day

What is another name for hurricanes?

• Heat waves

• Tornadoes

• Tsunamis

• Typhoons

What speeds can tornadoes reach?

• Up to 400 miles per hour

• Up to 300 miles per hour

• Up to 200 miles per hour

• Up to 100 miles per hour

What causes tsunamis?

• Strong winds

• Underwater earthquakes

• Heavy rains

• Forest fires

What often starts wildfires?

• Overflow of rivers

• Human activities

• Melting ice and snow

• High pressure in the Earth's atmosphere

What can cause landslides?

• Lack of rain

• High winds

• Earthquakes, heavy rain, or snow

• Underwater earthquakes