How Rocks Are Formed printable pdf download

How Rocks Are Formed

Name: _________________

Date: ____________

How Rocks Are Formed

Melted rock called magma is deep within

the earth. When magma comes through

openings in the earth’s crust it is called

lava. Lava cools to form hard igneous (IG

nee us) rocks.

Wind and water break rocks into small pieces. The small pieces settle at the

bottom of rivers and oceans. These layers of sediment harden to form

sedimentary (sed uh MEN tuh ree) rocks.

Heat and pressure deep inside the earth

can cause igneous and sedimentary rocks

to change. Rocks that are changed are

called metamorphic (met uh MOR fik)

rocks.

Use the correct word from the word box in each sentence below.

rivers

changed

pressure

Melted

Heat

harden

Lava

pieces

_________________ rock is called magma. _________________ cools to form

hard igneous rocks. Wind and water break rocks into small _________________.

Pieces of rock settle at the bottom of _________________ and oceans. Layers of

sediment _________________ to form sedimentary rocks. _________________

and _________________ deep inside the earth can cause igneous and

sedimentary rocks to change. Rocks that are _________________ are called

metamorphic rocks.

Homework: Write how you think rocks on the moon were formed.

How Rocks Are Formed