Earth science Quiz

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Quiz - Wk 3

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Question 1

1. Mount St. Helens in Washington and Mt. Etna in Italy, have repeated eruptions. They are examples of a ________ (volcano type)

1 points

Question 2

1. Match each of these volcanic regions with one of the three zones of volcanism (convergent plate boundaries, divergent plate boundaries, or intraplate volcanism).

*Answers can be used more than once

Mount St. Helens

Hawaii's Kilauea

East Afrcan Rift

Iceland Volcanoes and Fissure regions

A.	Intraplate volcanism
B.	None of These
C.	Divergent plate boundary
D.	Convergent plate boundary

Question 3

1. The _____ is the point on the Earth's crust (surface) where earthquake seismic energy ruptures.

		p-wave
		boundary
		epicenter
		focus

Question 4

1. Which one of the following statements about the Earth's crust is NOT true?

		It is the thinnest of the major subdivisions
		It is the thickest where prominent mountains exist
		Oceanic crust is enriched in potassium, sodium, and silicon
		Continental rocks are compositionally different than oceanic rocks

Question 5

1. The two main types of Lava are Blank 1, which has a smooth glassy surface and Blank 2, which has a jagged, rubbled, broken surface.

Question 6

1. A______ volcano is a very large, gently sloping mound composed mainly of basaltic lava flows.

		Stratospheric
		Shield
		Composite
		Cinder Cone

Question 7

1. Yellowstone National Park super-eruption volcanic region is an example of this type of volcanic structure:________

	A.	A composite cone
	B.	A caldera
	C.	An ash flow
	D.	A shield volcano

Question 8

1. Which of the following combinations should favor folding rather than faulting?

		high temperature and low confining pressure
		low confining pressure and low temperature
		high confining pressure and low temperature
		high temperature and high confining pressure

Question 9

1. Isostasy is the concept that ____________________.

	A.	The asthenosphere rigidly hold ups the lithosphere
	B.	The lithosphere is sinking into the asthenoshpere
	C.	The lithosphere is in floating equilibrium on the asthenosphere
	D.	The asthenosphere is in floating equilibrium on the lithosphere

Question 10

1. Cinder Cones __________________.

		have very steep slopes
		are usually less than 300 meters (1000 feet) high
		consist largely of pyroclastics
		all of these

Question 11

1. The two body waves produced by an earthquake are compressional P-waves, which stand for Blank 1waves and transverse S-waves, which stand for Blank 2 waves.

Question 12

1. The earthquake scale which is based on structural damage is called the__________scale.

Question 13

1. The Andes are formed by a ____________, whereas the Himalayas are formed by a___________.

	A.	Oceanic-Continental convergence; Continental-Continental Convergence
	B.	Oceanic-Continental divergence; Continental-Continental Convergence
	C.	Continental-Continental Convergence; Continental-Continental Convergence
	D.	Transform boundary;Oceanic-Continental convergence

Question 14

1. The addition of more Silica to magma

	A.	Decreases the viscosity of the magma
	B.	Doesn’t do a thing
	C.	Immediately solidifies magma
	D.	Increases the viscosity of the magma

1 points

Question 15

1. Using the graph in Figure 8.11 on page 236 in the Textbook (figure 8.10 pg.228 in the 12th Ed), determine the distance (in kilometers) to the epicenter of an earthquake from which you felt the first p-wave at approximately 5 minutes and the first s-wave at approximately 9 minutes, giving a 4-minute delay between wave arrivals.

	A.	1,000 km
	B.	1,500 km
	C.	2,500 km
	D.	4,000 km

1 points

Question 16

1. When an earthquake occurs, energy radiates in all directions from its source. The source is also referred to as the

	A.	Internal Point
	B.	Epicenter
	C.	Focus
	D.	Seismic Zone

1 points

Question 17

1. How are the formation of Volcanoes, Earthquakes and Mountains connected? AND Why are these features relatively unique to Earth compared to other planets in the Solar System?

		All three are formed from the fact that the Earth has earthquakes. Earthquakes are the primary cause tectonic motions on the Earth's surface, which drives the formation of volcanoes and mountains. Our Earth is unique because most other planets do not have earthquakes. Without earthquakes, plate tectonics will not occur and the surface of the Earth would be stationary: no volcanoes and no mountain building. (NOTE: Io, the moon of Jupiter is an exception, it has active volcanism due to the gravitational tug of its host Planet Jupiter)
		All three are formed from the fact that our Mantle is molten under the Earth's crust. Plate Tectonics is what drives the formation or occurrence of these features and the plate tectonics occurs from the fact that our Mantle is molten. Our Earth is unique because most other planets have cores that are "cold" and not molten. Without the fluid material under the crust, plate tectonics will not occur and the surface of the Earth would be stationary: no earthquakes, no volcanoes and no mountain building. (NOTE: Io, the moon of Jupiter is an exception, it has active volcanism due to the gravitational tug of its host Planet Jupiter)
		All three are formed from the fact that our Mantle is rocky under the Earth's crust. The rocky core of the Earth causes earthquakes, volcanoes and mountains to form. Our Earth is unique because most other planets have cores that are molten and not rocky. Without the rokcy material under the crust, the surface of the Earth would be stationary: no earthquakes, no volcanoes and no mountain building. (NOTE: Io, the moon of Jupiter is an exception, it has active volcanism due to the gravitational tug of its host Planet Jupiter)
		All three are formed from the fact that our crust is molten and fluid. Plate Tectonics is what drives the formation or occurrence of these features and the plate tectonics occurs from the fact that our crust is molten. Our Earth is NOT unique, all planets in our Solar System have very active earthquakes, volcanoes and mountain formation occurring.

2 points

Question 18

1. The ________magnitude scale is a measure of the energy released. It does not directly measure the extent of building damage.

		Gutenberg
		Reid
		Mercalli
		Richter

1 points

Question 19

1. Select the mountain ranges that were formed from Continental Collisions (Continent-Continent):

*There may be more than one correct answer!

		The European Alps
		The Urals in Russia
		The Himalayas in India
		The Andes in South America

1 points

Question 20

1. The Himalayas contain sedimentary rocks from old sea-floors.

True

False

1 points

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