Understanding Earthquakes and Their Measurement

What is the primary cause of most earthquakes on Earth?

• Volcanic eruptions

• Movement of tectonic plates

• Heavy rainfall

• Human construction

Which instrument is used to measure the strength of an earthquake?

• Barometer

• Seismograph

• Thermometer

• Anemometer

What is the point on the Earth's surface directly above the earthquake's origin called?

• Focus

• Epicentre

• Fault line

• Crust

Which scale is commonly used in Great Britain to measure the magnitude of earthquakes?

• Celsius scale

• Richter scale

• Decibel scale

• Beaufort scale

At which type of plate boundary do most large earthquakes occur?

• Constructive

• Destructive

• Conservative

• All of the above

What is the name of the fracture in the Earth's crust where earthquakes often occur?

• Rift

• Fault

• Ridge

• Basin

Which of the following is NOT a cause of earthquakes?

• Tectonic plate movement

• Volcanic activity

• Erosion by rivers

• Human activities like mining

What is the minimum magnitude on the Richter scale that is usually felt by people?

• 1.0

• 2.0

• 4.0

• 6.0

Which type of plate boundary is associated with the creation of new oceanic crust?

• Destructive

• Constructive

• Conservative

• Subduction zone

What is the scientific term for the energy waves produced by an earthquake?

• Sound waves

• Seismic waves

• Light waves

• Tidal waves