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continental drift and earth's interior Flashcards | StudBud
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continental drift and earth's interior
continental drift and earth's interior
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1
Which object can an S wave move through?
water
magma
soil
air
2
Which Statement describes a characteristic of the asthenosphere?
consistency is solid
pressure is higher than the crust
temperatures are cool
thickness is less than the crust
3
What FIRST caused people to consider that the continents were once one large landmass?
continents looked like they fit together
studying the valleys of the ocean floor
glacier evidence in warmer countries
similar fossils were found on many contnents.
4
Pangea formed about 300 mya.
True
False
5
a plate moves south at a rate of 2cm/yr. how many meters south does it move in 4,000 years
4,000 meters south
200 meters south
8,000 meters south
80 meters south
6
What are seismic waves?
an ultra low sound
waves that move through out earth after an earthquake
the sound we make as we travel around the sun
the sound whales make as they hit the ocean floor with their tails
7
which three continents contain coal fields that provide evidence for continental drift.
Eurasia, Africa, and South America
South America, North America, and Eurasia
Africa, Antarctica, and North America
Antarctica, South America, and Africa
8
what name did Wegener give to the single large landmass of all continents?
Pangea
Laurasia
Eurasia
Gondwanaland
9
which of these statements are true?
the outer core is less than 70km thick
the mantle is denser than the crust
pressure increases when moving from the core to the crust.
the crust assists in forming the magnetic field around the Earth
10
In Wegener's view, what caused mountain ranges to form?
Earth's Shrinking
Meteor impacts
Continents colliding
Volcanoes
11
a plate moving at a rate of 3 cm/ye is moving towards a plate that is 1,500 km away. In how many years will they meet?
50,000,000 years
500 years
50,000 years
5,000 years
12
Why is Earth's outter core hotter than the oceanic crust?
earth's oceanic crust is denser than earth's outer core is.
earth's oceanic crust has lava flowing from the mantle.
the core is made up of solid iron and nickel
the core is deeper within Earth than the oceanic crust is
13
Both core samples and seismic activity are direct evidence of the earth's interior.
False
True
14
which of these statements describe how the mantle is similar to earth's oceanic crust?
it consists primarily of molten rock
it has varying degrees of thickness
it is divided in to two layers
it is composed mostly of basalt
15
Alfred Wegener was an American who developed the Continental Drift Theory.
False, he was not American. He was German
True, Alfred Wegener was definitely American.
16
Which region of earth's crust experiences the least amount of pressure?
mantle
crust
outer core
inner core
17
Explain how tropical plant fossils are found on cold Arctic Islands.
the poles were warmer in the past
land movements warmed the landmasses in the past.
artic islands were closer to the equator in the past
plants were quick to adapt
18
a plate moves 200m in 10,000 years, what is its rate in cm/yr
0.02 cm/yr
2 cm/yr
100cm/day
10cm
19
S waves travel through earth's crust faster than P waves.
True, yup, definitely true.
False, it is the opposite: p waves are faster than s waves.
20
which of these BEST shows a method that shows the differences in the Earth's layers?
models that show how the continental crust varies in thickness
identifying mineral content of rock core samples at different depths.
recording atmospheric and oceanic temperatures at many beaches
computer analysis of seismic wave activity from an earthquake.
