Earthquake Intro

_________ is another word for an earthquake's strength.

• Intensity
• Frequency
• Magnitude
• Pressure

This scale is used to identify the magnitude of an earthquake and is a logarithmic scale...

• Modified Mercalli Scale

• Becquerel Scale

• Seismicgraph

• Richter Scale

When we measure the intensity of an earthquake, which scale should we use?

• Richter scale

• Earthquake scale

• Mercalli scale

• Body-wave magnitude scales

This scale is based on how individuals perceive the effects of an earthquake...

• The Mercalli scale

• The Richter scale

• The Tropics scale

• The NMR scale

Earthquakes that occur closer to the Earth's surface tend to be...

• of larger magnitude and high intensity which cause severe damage

• of larger magnitude and low intensity which cause minimal damage

• of smaller magnitude and low intensity which cause minimal damage

• of smaller magnitude and high intensity which cause severe damage

What is a break in the lithosphere along which movement in an earthquake has first occurred?

• Earthquake

• Epicenter

• Fault

• Focus

Where is the point at which the first movement occurs during an earthquake?

• Epicenter

• Focus

• Fault

• Plate

Where is the point on the Earth’s surface directly above the focus of an earthquake?

• Epicenter

• Fault

• Hypocenter

• Tremor

What is mostly likely the cause of an earthquake?

• stress due to movement in Earth's crust
• gravitational variation due to Moon's orbit around Earth
• temperature variation due to Earth's orbit around the Sun
• rotational imbalance due to changes in Earth's poles

An instrument that detects and measures earthquakes is a 

• seismogram
• focus seismic map
• focus
• seismograph