Rock%20Cycle

1
Rock Cycle

• A cool trip around the
• rock cycle

2
What is a rock?

• A rock is a mixture of such 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.

3
What is the difference between a rock a mineral?

• 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.

4
Made of elements
Must be inorganic
Can be made from organic materials
Solid
Can be made of lava/ magma
Made only of compounds Elements must be
chemically bonded
Mixtures made of minerals
Have crystals
Can be man made
Naturally occurring
Can be formed from solutions
5
Rock Types

• There are three types of rocks

Igneous
Sedimentary
Metamorphic
6
What is the rock cycle?

• To show how rocks slowly change through time,
  scientists have created a model called the rock
  cycle.
• It illustrates the processes that create and
  change rocks.

7
Rock Cycle Continued

• The rock cycle shows the three types of rock
  igneous, metamorphic, and sedimentaryand the
  processes that form them.

8
The Rock Cycle explains how Rocks and Natural
Processes are related
weathering
Sedimentary
Metamorphic
pressure, heat
melting
Igneous
9
What is the law of conservation of matter?

• 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.