1. Do the What You Know Quiz at the top of page Rocks Webquest
Do the What You Know Quiz at the top of page Rocks Webquest
Jon

2. Igneous Rock
Metamorphic Rock
Sedimentary Rock
Types of Rocks

3. The oldest type of all rocks is the igneous rock
The oldest type of all rocks is the igneous rock. The word "igneous" comes from a Greek word for fire. Deep inside the earth, the temperature is very high and the minerals there are in liquid form called magma. As the magma pushes towards the earth's surface, it starts to cool and turns into solid igneous rock. Fact
Igneous Rock

4. The earth's surface is constantly being eroded
The earth's surface is constantly being eroded. This means that rocks are broken up into smaller pieces by weathering agents such as wind, water, and ice. These small pieces of rock turn into pebbles, gravel, sand, and clay. They tumble down rivers and streams. These pieces settle in a new place and begin to pile up and the sediments form flat layers. Fact
Sedimentary Rock

5. Metamorphic rocks form deep in the earth where high temperature, great pressure, and chemical reactions cause one type of rock to change into another type of rock. Metamorphic rocks begin to form at kilometers beneath the earth's surface. They begin changing at temperatures of 100 degrees. g/J002289/meta.html
Metamorphic Rock

6. Magma is molten rock beneath the earth's crust. http://library
Magma is molten rock beneath the earth's crust org/J002289/glossary.ht ml
Magma

7. Sites Do the activity at top of page
Do the activity at top of page
org/J002289/index.html
Science Book
Sites