Earthquakes

What is an earthquake?

• A type of storm that occurs in the ocean
• A man-made explosion underground
• A result of excessive drilling for oil
• A natural phenomenon which causes sudden shaking of the earth's crust

The innermost layer of the earth is called:

• crust

• core

• mantle

• none of these

What is the mantle made of?

• Molten rocks

• Layers of ice and snow
• Liquid metal like iron and nickel
• Compressed air and gas

What are plates in earth's crust?

• Small fragments of the earth's mantle
• Layers of sediment on the ocean floor
• Massive underground caverns
• Large sections of the earth's surface that move and interact with each other

Which one of the following does not cause earthquake?

• Volcanic eruptions

• Nuclear explosion

• Tremors caused by meteorite

• High temperature

How are earthquakes measured?

• Using a thermometer

• Using a seismograph

• By observing cloud formations

• By measuring ocean currents

Point of earth's surface that is directly above focus during earthquake is called

• Hypocenter
• Epicenter
• Prime Meridian
• Equator

Name the scale used to measure the magnitude of an earthquake.

• Seismic scale

• Fahrenheit scale
• Kelvin scale
• Richter scale

Earthquakes can be caused by:

• plates sliding

• plates colliding

• both of these

• none of these

Which of the following should you do if you are caught in an earthquake?

• move near the windows

• take shelter under sturdy table

• stand near a cupboard

• any of these