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Continental Drift Flashcards | StudBud
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Continental Drift
Continental Drift
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Quiz on continental drift.
Flashcards
16 cards
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Questions
16
Answers
1
Which continent is believed to be the site of the earliest continental nuclei on Earth?
Africa
North America
South America
Europe
2
Why is granite less dense than other rock in Earth's mantle?
It's full of oxygen bubbles
It's made of less minerals
It's made of less rock
It's made of lighter minerals
3
What 2 heavy metals form the molten core of the Earth?
lead and silcon
oxygen and silicon
iron and nickel
lead and nickel
4
Uranium decays to turn into what stable element?
Nickel
Silicon
Iron
Lead
5
The Earth was created how many billion years ago?
4.6 billion
4.2 million
4.6 million
4.2 billion
6
Scientists believe that our oceans formed from water found within
comets and asteroids
asteroids and craters
meteors and asteroids
meteors and craters
7
What 2 light elements make up the molten rock that rises during volcanic eruptions?
oxygen and nickel
argon and silicon
oxygen and silicon
lead and nickel
8
Heat escaping from the Earth's core create what in the mantle?
convection currents
solidification of the mantle
air bubbles
new minerals
9
The world's last largest supercontinent is called what?
Kalbura
Laurasia
Gondwana
Pangaea
10
What is the name of the scientist who proposed continental drift?
Alfred Wegener
Alfred Wegenald
Alfred Weiner
Alfred Wegnald
11
What are the big jigsaw pieces of crust called?
tectonic plates
crustal pieces
crustal plates
tectonic pieces
12
How many years ago did Pangaea start breaking up?
40 million years ago
250 billion years ago
250 million years ago
40 billion years ago
13
Where does the seafloor sink back into the Earth to be recycled?
'sink' zones
recycle depot
subduction zones
crust is not recycled
14
Tectonic plates float on what layer of the Earth?
Crust doesn't float
Outer core
Mantle
Inner core
15
How long ago did relatively stable land masses form on Earth?
4.4 billion years ago
1.6 million years ago
1.6 billion years ago
4.4 million years ago
16
What type of rock formed the first continents?
Quatrz
Granite
Obsidian
Basalt
