GEOL 101 De Anza How Do Geologists Know Composition of Core Basic Geology & ENVT MCQs

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GEOL 101

De Anza College

GEOL

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Which layer within the earth is molten (liquid)?

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Flag question: Question 2Question 22 pts

Which is a gaseous planet?

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Flag question: Question 3Question 32 pts

The Big Bang theory states that…

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Flag question: Question 4Question 42 pts

Which is a rocky planet?

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Flag question: Question 5Question 52 pts

Which elements comprise 98% of the Crust?

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Flag question: Question 6Question 62 pts

Differentiation is the process that...

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Flag question: Question 7Question 72 pts

How do geologists know the composition of the core?

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Flag question: Question 8Question 82 pts

Where did the water in Earth's oceans come from?

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Flag question: Question 9Question 92 pts

What process slowly began to change the Earth's early atmosphere into an oxygen-rich one?

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Flag question: Question 10Question 102 pts

Our solar system formed from

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Flag question: Question 11Question 112 pts

With increasing distance from an oceanic ridge,

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Flag question: Question 12Question 122 pts

All of the following can be used to identify plate boundaries except?

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Flag question: Question 13Question 132 pts

Large mountainous ridges on the ocean floor mark

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Flag question: Question 14Question 142 pts

Plate-tectonic activity

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Flag question: Question 15Question 152 pts

Stripes that record paleomagnetic reversals on the seafloor

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Flag question: Question 16Question 162 pts

The supercontinent Pangaea was split apart by

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Flag question: Question 17Question 172 pts

The boundary between the lithosphere and asthenosphere is based on which of the following?

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Flag question: Question 18Question 182 pts

Which of the following is true of the ocean floor?

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Flag question: Question 19Question 192 pts

Why do earthquakes only occur in the lithosphere?

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Flag question: Question 20Question 202 pts

According to plate-tectonic theory, plates of rigid, elastic __________ move over a weak layer below.

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Flag question: Question 21Question 212 pts

Which of the following is true of oceanic rock?

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Flag question: Question 22Question 222 pts

The difference between the lithosphere and the asthenosphere is based on the chemical composition of the rocks in each layer.

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Flag question: Question 23Question 232 pts

Typical rates of plate movement are

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Flag question: Question 24Question 242 pts

A volcanic island arc forms where

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Flag question: Question 25Question 252 pts

A possible “driving force” for plate motions is

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Flag question: Question 26Question 262 pts

What type of plate boundary creates high ocean ridges at which new volcanic rock forms?

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Flag question: Question 27Question 272 pts

One primary difference between continental drift and plate tectonics is that

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Flag question: Question 28Question 282 pts

Deep-focus earthquakes only occur at which type of plate boundary?

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Flag question: Question 29Question 292 pts

Which of the following is not a mechanism that contributes to plate tectonic movement?

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Flag question: Question 30Question 302 pts

Mantle Convection, the major driving force for plate tectonics, occurs because _____.

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Flag question: Question 31Question 312 pts

Which of the following formed at a collisional plate boundary?

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Flag question: Question 32Question 322 pts

Paleomagnetic evidence in rocks reveals that the earth's magnetic field

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Flag question: Question 33Question 332 pts

An igneous rock that formed as magma cooled below the surface of the Earth is called ________ and will have ________crystals than one that formed as lava cooled above the Earth's surface.

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Flag question: Question 34Question 342 pts

For two isotopes of a given element, which of the following is always the same?

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Flag question: Question 35Question 352 pts

Volcanic glass is not considered a mineral because…

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Flag question: Question 36Question 362 pts

Which of the following is true of a mafic igneous rock?

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Flag question: Question 37Question 372 pts

Rocks that formed from the solidification of magma as it cooled below the earth’s surface are called:

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Flag question: Question 38Question 382 pts

What are the two most abundant elements in the Earth's Crust?

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Flag question: Question 39Question 392 pts

Which of the following is true of continental crust (as compared to oceanic crust)

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Flag question: Question 40Question 402 pts

In a metamorphic rock, foliation develops _________ directed stress (or to the maximum stress).

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Flag question: Question 41Question 412 pts

In geology, radioactive isotopes are important because...

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Flag question: Question 42Question 422 pts

Sedimentary rocks are particularly in helping geologists determine which of the following?

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Flag question: Question 43Question 432 pts

When a rock undergoes metamorphism, which of the following may occur?

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Flag question: Question 44Question 442 pts

When a preexisting rock is subjected to conditions of increased ______ and _______, a metamorphic rock will form.

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Flag question: Question 45Question 452 pts

A particular chemical element is determined by the number of ___________.

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Flag question: Question 46Question 462 pts

Limestone, which precipitates from seawater, is an example of what type of rock?

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Flag question: Question 47Question 472 pts

Metamorphism occurs as temperature and pressure increase and cause melting of the protolith.

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Flag question: Question 48Question 482 pts

_______ sedimentary rocks form when other rocks are broken down, transported, and lithified.

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Flag question: Question 49Question 492 pts

The atomic number of an element is…

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Flag question: Question 50Question 502 pts

Which of the following is true of Porphyritic igneous rocks?

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