Rocks L3

Key question:

What are the different types of rocks?

We are explaining the differences between igneous,

sedimentary and metamorphic rocks.

Comparative
/ fair testing

Research

Observation
Pattern
Seeking

Identifying,

Grouping

and

Classifying

Problem
Solving

All rocks belong to one of three types of rocks

Igneous rock

Sedimentary rock

Metamorphic rock

I

When the molten rock is

above the Earth’s

surface, we call it lava.

When the molten rock is

under the Earth’s surface,

we call it magma.

Igneous rocksare formed when magma or lava cools

down.

I

Watch this clip.

Can you see the molten rock cooling to form igneous rocks?

We

Can you remember what we use these

igneous rocks for?

granite

Can you see the layers in this rock?

How many different layers can you count?

I

Sedimentary rockis formed when layers of small sediments are

compressed over a long period of time.

Igneous rockcan become sedimentary rockif it

breaks down into small pieces and forms layers.

I

Metamorphic rockis formed whenigneousor
sedimentaryrock is put under lots of pressure.

You

Metamorphic rocksare formed when

Review

• What rock am I?

I was once a
sedimentary rock. I
was put under a lot
of pressure.
___________________

I formed from lots of
pieces of small
rock.That made
layers upon layers.
The layers got
compressed.
___________________

I formed when lava
or magma cooled.
___________________

Review

• What rock am I?

I was once a
sedimentary rock. I
was put under a lot
of pressure.
__metamorphic____

I formed from lots of
pieces of small
rock.That made
layers upon layers.
The layers got
compressed.
__sedimentary_____

I formed when lava
or magma cooled.
___igneous________