1. 4 Types of Mountains Fault-block Folded Upwarped Volcanic

2. Fault-Block Mountains Form from pulling forces, tension, at diverging boundaries Huge, tilted blocks of rock separated from surrounding rock by faults Sierra Nevada and Teton Range

3. Folded Mountains Form by the folding of rock layers caused by the compression forces of two converging plates Appalachian and Himalayan Mountains

4. Upwarped Mountains Form when forces inside Earth push up the crust (rising magma forms a dome) Adirondack Mountains, Black Hills, southern Rocky Mountains

5. Volcanic Mountains Form when layer upon layer of lava piles up to form a cone shaped mountain Frequently found at subduction zones Mount St. Helens, Mount Popocateptl

6. Underwater Volcanic Mountians Like those on land Like the Hawaiian Islands Hot Spot volcanoes, more gently sloped

7. Principle of Isostasy Lithosphere floats on asphalt-like asthenosphere Buoyant force of asthenosphere balances force of gravity

8. Buoyancy An upward force exerted by a liquid, gas or other fluid, that opposes the weight of an immersed object.