Earth Structure | Earth Science | Quiz

The Moho is the boundary between

the lithosphere and the asthenosphere.

the inner core and the outer core.

the crust and the mantle.

the mantle and the core.
Earthquakes are useful for studying Earth's interior because

each earthquake produces an array of seismic waves.

earthquakes are extremely destructive.

they happen below the surface of the Earth.

they release stress that has been stored.
Both S-waves and P-waves can travel easily through liquids.

true

false
Although we don't have any samples of the core, most scientists agree that its main constituent is

basalt.

granite.

iron.

peridotite.
Continental crust is ________________ than oceanic crust.

thicker and less dense

thicker and more dense

thinner and less dense

thinner and more dense
When seismic waves hit a boundary with a different material, they might

reflect.

refract.

change velocity.

all of the choices
What does the S-wave shadow zone indicate about Earth's interior?

The core is made of iron.

The mantle is denser than the crust.

The mantle is liquid.

The outer core is liquid.
Tectonic plates consist of the lithosphere, which is made up of the crust and the uppermost mantle.

true

false
How do we know that Earth is not the same composition all the way through?

Seismic waves do not arrive uniformly all over the earth.

There are two types of seismic waves, S- and P-waves.

Where the mantle is exposed, it looks very different.

Seismic waves attenuate with distance.