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Rock Cycle Test

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 1. 

Rocks are affected by heat and pressure. One source of this pressure is
a.
energy from the Sun.
c.
the mass of overlying rocks.
b.
burning of fossil fuels.
d.
the decomposition of organic materials.
 

 2. 

Compared to rocks in Earth's crust, rocks in the mantle are more
a.
dense.
c.
granular.
b.
mineral-rich.
d.
porous.
 

 3. 

Which kind of rock is formed when volcanic lava cools?
a.
sedimentary
c.
igneous
b.
metamorphic
d.
magma
 

 4. 

When an igneous rock is changed by the action of heat and pressure it becomes
a.
granite.
c.
a metamorphic rock.
b.
limestone.
d.
a sedimentary rock.
 

 5. 

Extrusive rocks are formed by
a.
magma cooling on Earth's surface.
c.
the attraction of magnetic particles.
b.
pressures inside Earth.
d.
tidal deposits of sediment.
 

 6. 

Igneous rocks are classified by where they are formed. Which type of igneous rock forms underground?
a.
extrusive
c.
volcanic
b.
intrusive
d.
ash
 

 7. 

The density is highest in Earth's
a.
crust.
c.
outer core
b.
mantle.
d.
inner core
 

 8. 

Sedimentary rocks are not found on the Moon because
a.
there is no silicon on the Moon.
c.
the Moon's gravity is too weak.
b.
lava flows are missing from the surface.
d.
there is no weathering on the Moon
 

 9. 

When rocks undergo weathering, they become
a.
magma.
c.
sediment.
b.
igneous rocks.
d.
volcanic cones.
 

 10. 

When magma reaches Earth's surface it becomes
a.
gas.
c.
energy.
b.
steam.
d.
lava.
 

 11. 

Sedimentary rocks can be converted into magma by undergoing which of the following processes?
a.
weathering and erosion
c.
heat and pressure
b.
cooling and crystallization
d.
compaction and cementation
 

 12. 

Rocks found on Earth are generally classified as sedimentary, metamorphic, or igneous. On which basis are these classifications made?
a.
where the rocks are found
c.
the color and shape of the rocks
b.
how the rocks were formed
d.
the chemical composition of the rocks
 

 13. 

 
Use the rock cycle diagram below to answer this question.

    
rockcycle_files/i0140000.jpg

According to the rock cycle, any rock may be affected by all of the following processes except
a.
weathering and erosion.
c.
heat and pressure.
b.
melting.
d.
evaporation.
 

 14. 

A deep well or mine shaft goes through which layer or layers of Earth?
a.
crust only
c.
crust and mantle
b.
mantle only
d.
mantle and core
 

 15. 

Earth's core is mainly composed of
a.
iron and aluminum.
c.
iron and nickel.
b.
silicon and hydrogen.
d.
silicon and oxygen.
 



 
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