Igneous rocks

Multiple Choice

What is this called?

• Earthquake

• Tornado

• Volcano

Multiple Choice

There is something inside the volcano (under the Earth crust), its made of molten rocks and we call it ____

• Magma

• Trench

• Water

Multiple Choice

After Magma finds its way to the outside of a volcano it becomes ____

• Asphalt

• Tar

• Lava

Multiple Choice

_______is HOT molten rock found under Earth surface

• Lava

• Sedimentary rock

• Magma

• Metamorphic rock

Multiple Choice

On a hot day you forgot your chocolate bar in your bag, what would you do to get it back to a solid bar?

• heat it more

• cool it down in the fridge

Poll

If magma and lava are molten rocks, imagine what happens as they cool down?

• a rock is formed

• a rock is formed

• a rock is formed

Lesson objective

By the end of this class, students will be able to analyze how igneous rocks form.​

Igneous rocks form from cooling of

• Magma - under Earth crust

• Lava - over Earth's surface

Igneous rocks are formed by cooling of magma or lava

Multiple Choice

Igneous rocks can be found under and above Earth's surface

• True

• False

Magma cools s.l.o.w.l.y

• ALOT of beautiful crystals form

Magma cools s.l.o.w.l.y

• The longer it takes magma to cool, the larger the crystals can get.

• Example: Granite, Pegmatite, Gabbro

Multiple Choice

You can find ALOT of crystals in igneous rocks that cool quickly

• True

• False

What happens if

• Magma cools slowly?

• Magma cools quickly?

Magma cools quickly

Little or no crystals will form

Some AIR may fill the spaces

Example: Pumice ----->

Magma cools quickly

Little or no crystals form

Can cool by the help of ocean water

Example: Basalt ---->

Multiple Choice

You can see large crystals in this igneous rock. This means that magma cooled down _____

• slowly

• quickly

Multiple Choice

the longer the cooling of magma takes, the _______

• smaller or no crystals will form

• larger the crystals formed

​Let's sum up

Multiple Choice

_____ rocks are formed by the cooling of magma or lava

• Sedimentary

• Igneous

• Metamorphic

Multiple Choice

the longer it takes for magma to cool down, the ______ the crystals formed

• smaller

• larger

Multiple Choice

Igneous rocks are only formed under Earth's crust

• True

• False

​Homework

Booklet pg.68​

Thank you