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Worksheet: Rapid Changes to Earth's Surface: Volcanoes, Floods, Landslides, and Earthquakes


In 1935, An American scientist named Charles Richter invented a way of measuring the strength of earthquakes.

Strength (Magnitude) 0-2 2-3 3-4 4-5 5-6 6-7 7-8 8 and above
Effects Not felt by people Felt a little by people Ceiling lights swing Walls crack Furniture moves Some buildings collapse Many buildings destroyed Total destruction of buildings, bridges, and roads

What is the name of the scale used to measure the magnitude (strength) of earthquakes?

  • AThe earthquake scale
  • BThe Charles scale
  • CThe Richter scale

At which magnitude on the Richter scale does damage to buildings, bridges, and roads occur?

  • A7–8
  • B4–5
  • C6–7
  • D8 and above


Where do most earthquakes happen?

  • AMost earthquakes happen at the North and South Poles.
  • BEarthquakes happen in every country in the world.
  • CMost earthquakes happen along a fault line where Earth’s plates meet.


What is the effect of landslides, earthquakes, and volcanic eruptions on the surface of Earth?

  • AParts of Earth’s surface change quickly
  • BParts of Earth’s surface change slowly


What is the name given to the molten rock below Earth’s surface?

  • AMagma
  • BLava