Ch 4 6th Grade Question Preview (ID: 40436)
Earth.
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The theory that Earth's surface is broken into large, rigid pieces that move is called
a) crust motion
b) earthquake theory
c) plate tectonics
d) shake, rattle, and roll
About how many large plates have been identified?
a) 5
b) 15
c) 27
d) 42
A convergent boundary is where two plates move away from each other.
a) true
b) false
c)
d)
The process that occurs when one tectonic plate moves under another tectonic plate is called
a) subduction
b) conduction
c) convergence
d) divergent
We can measure plate movement with the help of
a) GPS
b) GMC
c) NBA
d) all of the above
When rocks on either side of a fault move and slide, a ___ is caused
a) hurricane
b) tornado
c) earthquake
d) fire
Most earthquakes occur at
a) plate boundaries
b) in the middle of plates
c) where there are rivers that have been dammed up
d) in the Arctic ocean
How much energy is released during an earthquake s called the
a) intensity
b) magnitude
c) force
d) impact
Most volcanoes occur at
a) convergent boundaries
b) divergent boundaries
c) transform boundaries
d) in the middle of plates
Water can lower the melting temperature of mantle rock.
a) true
b) false
c)
d)
Lava erupts at convergent and divergent boundaries to form new crust.
a) true
b) false
c)
d)
Long, narrow mountains formed by magma at divergent boundaries are called
a) volcanoes
b) lava valleys
c) underwater pillars
d) mid-ocean ridges
When plates converge and neither subducts, --- form.
a) valleys
b) mountains
c) canyons
d) whirlpools
The mechanical and chemical processes that change Earth's surface over time is called
a) precipitating
b) eradicating
c) weathering
d) tampering
Physical weathering can be caused by
a) acidic water
b) reactions with air
c) plants and animals
d) all of the above
Chemical weathering happens faster where it is dry and cold.
a) true
b) false
c)
d)
The downhill movement of a large mass of rocks or soil due to gravity is called
a) deposition
b) mass wasting
c) big falling
d) lahar
Large ice masses, formed by snow buildup, that move slowly across Earth's surface
a) crystals
b) caves
c) poles
d) glaciers
The laying down or settling of eroded material is called
a) erosion
b) deposition
c) convection
d) wasting
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