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Analyzing a Diagram
This diagram shows a simple version of the rock cycle.
Use it to answer the questions below.
forming
2 rock
sediment
1
breaking
apart
sedimentary
Rock
igneous
Rock
heat
3 and
pressure
5
cooling
magma
4 melting
metamorphic
Rock
1. Where are loose materials developing into rock?
a. 1
c. 4
b. 2
d. 5
2. Where are sand and other small particles forming
from rock?
a. 1
c. 4
b. 2
d. 5
3. Where is magma developing into rock?
a. 1
c. 4
b. 3
d. 5
4. Where is molten rock forming?
a. 1
c. 4
b. 3
d. 5
5. Where are heat and pressure changing solid rock
into another type of rock without melting it?
a. 1
c. 4
b. 3
d. 5
6. According to the diagram, what can happen to
sedimentary rock?
a. It can become sediment or magma.
b. It can become igneous rock or magma.
c. It can become sediment or metamorphic rock.
d. It can become sediment, metamorphic rock,
or magma.
7. How could you change the diagram to show that
igneous rock can become magma again?
a. Add an arrow from igneous rock to metamorphic rock.
b. Add an arrow from heat and pressure to
igneous rock.
c. Add an arrow from igneous rock to melting.
d. Add an arrow from melting to igneous rock.
8. What must happen to rock that formed inside
Earth before it can become sediment?
a. It must reach the surface as rock above it
wears away.
b. It must become magma and erupt from
a volcano.
c. Heat and pressure must change it into sediment.
d. It must become sedimentary rock while
inside Earth.
Extended Response
Answer the two questions below in detail. Include
some of the terms shown in the word box. In your
answers underline each term you use.
9. Most sedimentary rock forms from pieces of
existing rocks. Explain why coal is an unusual
sedimentary rock and how coal forms.
pressed together
cooling time
buried
mineral crystals
10. Melba is trying to decide whether an igneous
rock formed deep inside Earth or at the surface.
What should she look for? Why?
Chapter 3: Rocks 107