# SCIN 138 SCIN138 Week 3 Quiz (APUS)

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SCIN138 Week 3 Quiz (APUS)

Exam 3 (timed & single access): "Visualizing" Chapters 5 & 6 (Due Week 3)

Question 1 of 25 4.0/ 4.0 Points

Fragments of unmelted rocks that are sometimes incorporated in magma are known as

Question 2 of 25 4.0/ 4.0 Points

P and S waves travel outward from the focus, generating waves that travel only along the surface.

Question 3 of 25 4.0/ 4.0 Points

Large, loose pyroclasts welded together during an eruption are known as _______.

Question 4 of 25 4.0/ 4.0 Points

The _______ is the part of the Earth's interior where rocks start to melt.

Question 5 of 25 4.0/ 4.0 Points

The strength of an earthquake can also be called the CorrectÂ magnitudeÂ of the earthquake.

Question 6 of 25 4.0/ 4.0 Points

In the figure below, what is the approximate time of the arrival of the S-waves?

Question 7 of 25 4.0/ 4.0 Points

The CorrectÂ RichterÂ scale is a logarithmic scale that assigns a number to quantify the amount of seismic energy released by an earthquake.

Question 8 of 25 4.0/ 4.0 Points

The boundary that separates the crust from the mantle is known as the CorrectÂ Mohorovicic Discontinuity

Question 9 of 25 4.0/ 4.0 Points

The zone from the base of the asthenosphere to the mantle-core boundary is known as the lithosphere.

Question 10 of 25 4.0/ 4.0 Points

The core causes a huge increase in the speed of P-waves.

Question 11 of 25 4.0/ 4.0 Points

In the figure below, which layer of the Earth is the thickest?

Question 12 of 25 4.0/ 4.0 Points

A _______ wave is an elastic rebound wave that travels outward in all directions from the point of an earthquake.

Question 13 of 25 4.0/ 4.0 Points

What is the difference between magma and lava?

Question 14 of 25 4.0/ 4.0 Points

The Hawaiian Islands are composed of what type of volcanoes?

Question 15 of 25 4.0/ 4.0 Points

The death of this person was due to pyroclastic flow.

Question 16 of 25 4.0/ 4.0 Points

The degree to which a substance resists flow is known as CorrectÂ viscosityÂ ?

Question 17 of 25 4.0/ 4.0 Points

The igneous rock in the figure below has what type of texture?

Question 18 of 25 4.0/ 4.0 Points

The figure below is an igneous rock with what kind of texture? Hint: Don't be confused by the holes.

Question 19 of 25 4.0/ 4.0 Points

A _______ is a mixture of molten and solid rock.

Question 20 of 25 4.0/ 4.0 Points

Beneath the surface, rocks completely melt at about 1000ÂșC.

Question 21 of 25 4.0/ 4.0 Points

_________ igneous rocks are composed of dark-colored minerals rich in magnesium and iron.

Question 22 of 25 4.0/ 4.0 Points

Molten rock that reaches the Earth's surface is known as _______.

Question 23 of 25 4.0/ 4.0 Points

Fine grained igneous rocks have a(n) CorrectÂ AphaniticÂ texture.

Question 24 of 25 4.0/ 4.0 Points

The smallest type of tephra is known as

Question 25 of 25 4.0/ 4.0 Points

Small pyroclasts welded together during an eruption results in the formation of a tuff.

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