EARTHQUAKES EPICENTER AND MAGNITUDE

Where is the epicenter located in the illustration?

• 1

• 2

• 3

• 2 and 3

What point on Earth's surface is directly above the focus?

• epicenter

• fault

• focus

• magnitude

What is focus?

• center of the earth

• end of the seismic waves

• the surface of the earth where the wave starts

• the location where an earthquake’s waves begin

Which of the following describes an active fault?

• no earthquake occurs

• no record of earthquake

• expected to generate an earthquake

• generates earthquake once in a million years

Which point is closest to the epicenter?

• Point A

• Point B

• Points A and B

• Points B and C

What scale measures the magnitude or size of an earthquake?

• Mercalli scale

• Richter scale

• Spring scale

• Weighing scale

What is referred to as a measure of the amount of energy released in an earthquake?

• intensity

• magnitude

• stress

• tension

What is the description of a 5.0 – 5.9 magnitude in a Richter scale?

• light

• major

• moderate

• strong

In which of these places will an intense earthquake likely happen?

• near a mountain

• along active fault

• near coastal area

• along inactive fault

What factor determines the strength of an earthquake? The depth of its _________.

• epicenter

• fault

• focus

• ground