Metamorphic Rock

1. Click on the website How Metamorphic Rocks Are Formed and read the information about metamorphic rocks.

2. View the animation of the rock being formed over time by pressure and heat.

3. Click on the rock examples at the bottom of the page for great illustrations.

**Use all of the resources provided to complete the Data Sheet.

*Other useful information about metamorphic rocks

*Metamorphic rocks are rocks that have changed form one form to another.

*If a rock is heated and squeezed for millions of years, it can turn into a new kind of rock.

*Metamorphic rocks begin to form at 12-16 km (7.2-10 miles) beneath the surface of the earth.

*They begin changing at temperatures of 100-800 degrees Celsius (212-1472 degrees Fahrenheit)

*The heat in the earth comes from magma and the pressure comes from layers of rock piled onto layers of rock.

*The layers on the bottom get squeezed and the thicker the layers the more pressure or the more they get squeezed.