Earthquakes week 5

Earthquakes usually occur on the edges of large sections of the Earth's crust called tectonic plates. These plates slowly move over a long period of time. Sometimes the edges, which are called fault lines, can get stuck, but the plates keep moving. Where do earthquakes happen?

• On the edges

• Only in California

Pressure slowly starts to build up where the edges are stuck and, once the pressure gets strong enough, the plates will suddenly move causing an earthquake. What builds up?

• Pressure

• Rocks

Generally before and after a large earthquake there will be smaller earthquakes. The ones that happen before are called foreshocks. The ones that happen after are called aftershocks. Scientists don't really know if an earthquake is a foreshock until the bigger earthquake occurs. True or False: There are smaller earthquakes before and after the large earthquake?

• True

• false

Generally before and after a large earthquake there will be smaller earthquakes. The ones that happen before are called foreshocks. The ones that happen after are called aftershocks. Scientists don't really know if an earthquake is a foreshock until the bigger earthquake occurs. What do they call the ones that happen AFTER the large earthquake?

• aftershock

• before shock

Shock waves from an earthquake that travel through the ground are called seismic waves. What do they call shock waves that travel through the ground?

• seismic waves

• fore shocks.

What are earthquakes?

• The shaking that results from the movement of rock beneath Earth's surface

• Masses of earth sliding down cliffs or mountains

• A rotating column of air causing mass destruction

• A gigantic wave

Tags

NGSS.MS-ESS3-2

NGSS.MS-ESS2-2

Can people cause earthquakes?

• Yes

• No

• No one knows

Tags

NGSS.HS-ESS3-1

What should you do during an earthquake?

• Hide under a sturdy table or desk and grab onto it

• Go outside into an open field and stay there with your hands over your heads

• Call 911 immediately

• Run to the nearest table and go on top of it

What is the shaking of the Earth’s crust caused by a release of energy?

• Earthquake
• Epicenter
• Fault
• Plate

Tags

NGSS.MS-ESS3-2

Which of the following is NOT a cause of an earthquake?

• Collapse of Cavern
• Eruption of Volcano
• Lightning Strikes
• Moving Tectonic Plates

Tags

NGSS.MS-ESS3-2