Earthquakes

The magnitude of an earthquake is measured by an instrument called

• a digital scale

• a seismogram

• a seismograph

• kilogram

Why can't we feel all of Earth's earthquakes?

• They happen deep inside Earth.

• They aren't happening.

• They happen so fast.

• They are very gentle.

What do we call the place where two tectonic plates meet?

• Plate

• Fault

• Focus

• Epicenter

What do we call the continuously moving parts of Earth's crust?

• Plates

• Crust

• Earthquakes

• Volcanoes

What happens when tectonic plate shift suddenly?

• Thunderstorm

• Volcano

• Earthquake

• Landslide

The further the seismic waves travel from the center, the ____________ they become.

• Stronger

• Weaker

How do scientists find out the intensity and duration of Earthquakes?

• Seismics

• Seismos

• Seismographs

• Richter Scales

What is the difference between the epicenter and the focus?

• The epicenter is located on Earth's surface and the focus is on the fault line.

• The focus is located on Earth's surface and the epicenter is on the fault line.

What scale is used to measure Earthquakes?

• Richter Scale

• Saffir-Simpson Scale

• Fujita Scale

• Seismoscale

The strongest earthquake will be a category _____.

• 1

• 5

• 10

• 20