2844708
Science
- Physics
- Rocks
- Igneous Rocks contained randomly
arranged interlocking crystals. The
size of the crystals depend on how
quickly the molten magma solidifies:
1. Magma that cools slowly will form
an igneous rock with large crystals
2. Lava that cools quickly will form
an igneous rock with small crystals.
This means that we get two main
types of igneous rock, intrusive and
extrusive.
- Igneous Rocks are
formed from molten
rock that has cooled
and solidified. The inside
of the Earth is very hot
- hot enough to melt
rocks. Molten (liquid)
rock is called magma.
When the magma cools
enough, it solidifies and
igneous rocks form
- Rocks with
rounded grains
are usually softer
and more
crumbly than
rocks with
interlocking
grains. So porous
rocks tend to be
softer than non
porous rocks
- Rocks with rounded grains
are usually softer and
more crumbly than rocks
with interlocking grains.
This is because the water
can get into the gaps
between the grains. Rocks
that absorb water are
described as being 'porous'
- There are three main types of
rocks: igneous, metamorphic and
sedimentary
- Igneous Rocks contained randomly
arranged interlocking crystals. The
size of the crystals depend on how
quickly the molten magma solidifies:
1. Magma that cools slowly will form
an igneous rock with large crystals
2. Lava that cools quickly will form
an igneous rock with small crystals.
This means that we get two main
types of igneous rock, intrusive and
extrusive.
- Rocks
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