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Sea-Floor Spreading Flashcards | StudBud
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Sea-Floor Spreading
Sea-Floor Spreading
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Flashcards
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Questions
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1
Plate boundaries that push together and form mountains are called?
convergent
divergent
transform
convection
2
What is the process by which hot material from deep within the Earth rises while cooler material near the surface sinks.
Ridge push
Sea-floor spreading
Convection
Slab pull
3
What happens at plate boundaries when one plate goes under another plate?
deduction
subduction
reduction
conduction
4
The youngest rock on the crust are found at the Mid-Atlantic ridge located where?
in the desert
in the mountains
in a volcano
in the ocean
5
Plate boundaries that pull apart are called?
divergent
convergent
diagonal
transform
6
What did the discovery of sea-floor spreading prove about plate tectonics?
that mountains are moving
that continents are floating
that continents are not moving
that continents are moving
7
What is found on a hot spot?
houses
volcanoes
mountains
earthquakes
8
Where does the energy for plate movement come from?
magnetic currents
convection currents
solar currents
ocean currents
9
What are convection currents in the Earth?
the movement of rocks in the crust
the movement of magma in the mantle
the movement of magma in the core
Movement of the crust
10
Plate boundaries that slide past each other are called?
transform
convergent
divergent
trench
11
What patterns on the sea floor were evidence for seafloor spreading?
magnetic circles
marble circles
marble stripe
magnetic stripes
12
What did Wegener name the "super-continent" in his theory?
Panera
Panem
Pangaea
Pongo
13
What are the two types of Earth's crust?
Oceanic & Continental
Oceans & Content
Crust
Oceanic & Crustal
14
Whats the hottest layer of the earth
Lithosphere
Core
Mantle
Crust
15
What could you find on the bottom of the ocean?
mountains & plants
Plants and Monsters
trenches & ridges
monsters & ridges
16
What were some of the pieces of evidence Wegener had for Pangaea?
satellite images
plants, mountains, & currents
fossils, mountains, & currents
fossils, mountains, & continents
17
What is the process called that adds new ocean crust?
plates
sea-floor breaking
sea-floor spreading
sea-floor shedding
18
Why was Alfred Wegener's theory rejected by other scientists?
He did not have enough money
He did not have enough evidence
He did not tell anyone his theory
They didn't like him
19
What layer does the tectonic plates ride on?
Outer Core
Inner Core
Asthenosphere
Mesosphere
20
Where is the elevation or height of the ocean floor higher?
mid-ocean valley
Trench
the mid-ocean ridge
Coastal
