Earthquakes

Earth’s outer core is best inferred to be

• liquid, with an average density of approximately 4 g/cm3

• liquid, with an average density of approximately 11 g/cm3

• solid, with an average density of approximately 4 g/cm³

• solid, with an average density of approximately 11 g/cm³

Tags

NGSS.HS-ESS2-3

Why is Earth’s outer core inferred to be a liquid?

• P-waves can pass through the outer core.

• P-waves cannot pass through the outer core.

• S-waves can pass through the outer core.

• S-waves cannot pass through the outer core.

Compared to Earth's continental crust, Earth's oceanic crust is

• thinner and more dense

• thinner and less dense

• thicker and more dense

• thicker and less dense

Which element is most abundant in Earth's crust?

• Nitrogen

• Hydrogen

• Oxygen

• Silicon

Tags

NGSS.MS-PS1-1

What caused the interior of Earth to separate into layers?

• a decrease in the rate of rotation of Earth

• the gravitational pull on materials of varying densities

• variations in heating by the Sun due to Earth's tilt

• collisions with meteors and comets

What happens to the density and temperature of rock within Earth's interior as depth increases?

• density decreases and temperature decreases

• density decreases and temperature increases

• density increases and temperature increases

• density increases and temperature decreases

If a seismic station is 3200 km from an earthquake epicenter, which is the time needed for an S-wave to travel from the epicenter to the seismic station?

• 4 min 40 sec

• 6 min 0 sec

• 10 min 40 sec

• 11 min 10 sec

Tags

NGSS.MS-PS4-2

A P-wave takes 5 minutes to travel from the epicenter of an earthquake to a seismic station. Approximately how many minutes will it take an S-wave to travel that same distance?

• 15min

• 12min

• 9min

• 4min

The epicenter of an earthquake is located 6,500 kilometers away from a seismic station. If the first S-wave arrived at this seismic station at 1:30 p.m., at what time did the first P-wave arrive?

• 1:20 p.m

• 1:22 p.m.

• 1:38 p.m.

• 1:40 p.m.

Tags

NGSS.MS-PS4-2

A strong earthquake that occurs on the ocean floor could result in the formation of

• Tsunami

• El Nino

• Delta

• Ocean Current

Tags

NGSS.MS-ESS3-2