Download Write what is underlined What is a rock?

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Write what is underlined
What is a rock?
A rock is a mixture of minerals, rock
fragments, volcanic glass, organic
matter, or other natural materials.
■ Most rock used for building stone
contains one or more common
minerals, called rock-forming
minerals, such as quartz, feldspar,
mica, or calcite
■ When you look closely, the
sparkles you see are individual
crystals of minerals.
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What is the difference
between a rock & a
mineral?
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Minerals are solid,
naturally occurring,
inorganic, have a
fixed composition
and are made of
one or more
elements.
■ Rocks are made of
one or more
minerals.
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UNDERSTANDING CHECK:
What is a rock?
■ What
is a rock a mixture of?
■ What are the sparkles you see in
rocks when you look closely?
Rock Types
1. Igneous
There are three types
of rocks
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2. Sedimentary
3. Metamorphic
UNDERSTANDING CHECK:
What is the difference between
a rock & a mineral?
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What is the rock cycle?
A. To
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show how rocks slowly change
through time, scientists have
created a model called the rock
cycle.
B. It illustrates the processes
that create and change rocks.
Rock Cycle Continued
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The rock cycle shows the three types of
rock— igneous, metamorphic, and
sedimentary—and the processes that form
them.
Rock Cycle
The
explains
how Rocks and Natural Processes are related
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What is the law of
conservation of matter?
■
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Law of conservation of matter states
that matter cannot be created or
destroyed.
■ The changes that take place in the rock
cycle never destroy or create matter.
■ The elements are just redistributed in
other forms.