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Earth's Layers and Plate Tectonics Flashcards | StudBud
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Earth's Layers and Plate Tectonics
Earth's Layers and Plate Tectonics
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Answers
1
What forms at transform boundaries?
Mountains
Earthquakes
Volcanoes
Rift Valleys
2
Why is the Ring of Fire, an area in the Pacific, where many earthquakes and volcanoes happen?
There are numerous tectonic plate boundaries along the edges
Plates diverging
Transform boundaries surround this region
Plates converging
3
What forms when continental crust converges with continental crust?
Folded Mountains
Islands
Rift Valleys
Volcanoes
4
What is the Lithosphere?
The Lithosphere is the crust.
The Lithosphere is the crust and upper layer of the mantle.
The Lithosphere is the mantle.
The Lithosphere is the sphere of earth containing soil.
5
Which of the following
IS TRUE
about the Outer Core?
It is solid metal (iron and nickel).
It is part of the Asthenosphere.
Convection currents that move the crust happen here.
It is liquid metal (iron and nickel).
6
How do Earth's tectonic (lithospheric) plates move?
The core heats the mantle which causes convection currents.
The plates move as they float along the oceans.
The plates do not move.
Convection in the core causes the plates to move.
7
New crust is created in the ocean at mid-ocean ridges. What does this do to older rocks?
Pushes older rocks to the side causing seafloor spreading.
Forces old crust to bunch together causing mountains.
Melts it and adds it to the new crust formation.
It makes the layer of crust thicker.
8
What forms when oceanic crust diverges?
Mountains form
Islands are created
New crust
Creates mid-ocean ridges (seafloor spreading) & new crust
9
What forms when 2 Oceanic Plates of different densities converge?
Rift Valleys
Mountain ranges form in the ocean.
Sea Floor Spreading
Subduction creates trenches and volcanic island arcs.
10
Why did other scientists not support Wegener's theory of Continental Drift?
He could explain how the plates moved.
He had no evidence to support his claim.
He could not explain how the plates moved.
His evidence supported the idea that the plates hadn't moved.
11
What evidence did Wegener find to support his theory of Continental Drift?
Matching ice sheets in Africa, Antarctica, SA, and Australia.
Matching rock layers and fossils on multiple continents.
Plant fossil only found in Asia.
Rare phytoplankton found in Australia.
12
What forms when 2 Oceanic Plates of similar densities converge?
Mountain ranges form in the ocean.
Subduction creates trenches and volcanic island arcs.
Rift Valleys
Sea Floor Spreading
13
What forms when continental crust diverges?
Rift Valleys and new crust
Volcanoes
Folded Mountains
Islands
14
What is the correct order from outermost to innermost?
Inner Core, Outer Core, Mantle, Crust
Crust, Mantle, Outer Core, Inner Core
Crust, Mantle, Inner Core, Outer Core
Inner Core, Mantle, Outer Core, Crust
15
Which of the following is
NOT TRUE
about the Crust?
It is a solid that is broken into pieces called plates.
It is the coolest layer of Earth.
It is made of metal.
It is the least dense layer of Earth.
16
Which of the following is
NOT TRUE
about the Inner Core?
It is the hottest layer of Earth.
It is solid metal.
It is liquid metal.
It is the most dense layer.
17
Which of the following is
NOT
TRUE
about the Mantle?
The upper mantle is part of the Lithosphere.
It is an amorphous solid (not truly a liquid or a solid).
It is a solid.
Convection currents that move the crust happen here.
18
What forms when an ocean plate and continental plate converge?
Subduction creates volcanic mountain ranges.
Subduction creates volcanic island arcs.
Rift Valleys
Seafloor Spreading
