Unit8ppt6thgrade

ROCKS

ROCKS UNIT 8 6TH GRADE OF P.E.

ROCKS CHANGE. THEY ARE CONTINUALLY :

FORMING

ERODING

AND

MOVING FROM PLACE TO PLACE.

• Those changes are very slow.( over millions of years)

THE EARTH’S INTERIOR

• is very hot.

• The heat inside the Earth

melts rocks.

• These melted rocks can

form VOLCANOES and cause EARTHQUAKES.

ROCKS MELT AND FORM VOLCANOES

Melted rock=MAGMA

magma chamber

magma

THE HEAT INSIDE THE EARTH CAUSES EARTHQUAKES.

• Earthquakes are

movements on the Earth’s surface.

• Volcanoes and earthquakes

change landscapes . Like the picture.

volcano

magma

earthquakes