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Grade 8 - 3-2 Flashcards | StudBud
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Grade 8 - 3-2
Grade 8 - 3-2
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1
Think about Pangea. What hypothesis makes the most sense?
Pangea was changed by a rising ocean level that shaped today's continents.
Pangea broke apart, and drifted to the present-day locations of continents.
The present continents will move and form another Pangea.
Pangea was pulled apart by north and south magnetic poles.
2
Why is plate tectonics beneficial to society in terms of safety?
Helps explain why mountain ranges exist
Helps explain the presence of coal in non-tropical regions
Helps scientists explain and better understand fossil distribution
Helps locate areas that might have a higher potential for earthquakes.
3
New parts of the sea floor are constantly being made.
True
False
4
When one tectonic plate gets pulled underneath another one.
Mid-Ocean ridge
Subduction
Adduction
Slab pull
5
A system of ideas that explains many related observations and is supported by a large body of evidence...
scientific hypothesis
scientific theory
scientific rule
scientific law
6
Alfred Wegner died in Greenland when temperatures reached -76 °.
True
False
7
There are long mountain belts that divide and generate new sea floor as magma rises and erupts? What do we call these?
Mid-Ocean Ridges
Magnetic poles
Volcanoes
Subduction Zones
8
Which layer of the Earth does a tectonic plate ride on top of?
Outer core
Mesosphere
Asthenosphere
Lithosphere
9
Througout time, the Earth's North and South pole have been reversed. This is known as...
Pole change
Magnetic reversal
Subduction
Polar newness
10
There is a place called the "Ring of Fire" that is very active with volcanoes and earthquakes
Sometimes
True
False
Never
11
7th graders in California have earthquake drills, just like we have fire drills and tornado drills.
Every 5 years
True
Only every other year
False
12
This movement in the Earth's crust comes from differences in density cause by heating
Slab pull
Convection current
Conduction current
Subduction
13
A theory was introduced that continents have moved in the past and will continue to move. We call this...
Continental drift
Plate movement
Plate tectonics
Continental shift
14
What is one thing that Wegner did NOT use to prove Continental drift...
Continents fit together like puzzle pieces
Similar magnetic fields
Similar fossils and plants
Similar climates
15
This happens when the lithosphere thickens from a mid-ocean ridge.
Mid-ocean ridge
Subduction
Slab pull
Ridge push
