Science+Chapter+9

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[|Really cool Rock Cycle Website] The Interactive Rock Cycle

The Rock Cycle

[|How sedimentary rocks form]

How do Rocks undergo change What are three main types of rocks? Sedimentary, Metamorphic and Igneous

What are two types of rocks shown in the pictures of Hawaii? Where are the different types located? Igneous - near the volcano; Sedimentary - near the beach

What are the two types of rocks shown in the pictures of Arizona? Where are the different types located? Metamorphic - squeezed layers of sedimentary rock in the dessert; Sedimentary - broken bits of sedimentary and metamorphic broken apart in the Grand Canyon.

Do small crystals from from quick cooling of melting rock or from slow cooling? Small crystals from from quick cooling - there is not as much time for the crystals to grow because the temperature cools too quickly. Large crystals form from slow cooling - more time for crystals to grow in the extreme heat.

What is the difference between the River Valley and the Glaciated Valley? The River Valley was scraped out into a V-shape by the river that cut its way through. The Glaciated Valley has a U-shape from the glacier that cut its way through.

What created the sea cliffs in California? Sand and pebbles that were washed against the cliffs by the waves eventually wore down the rocks.

As sediments flow downstream in a river, the velocity (rate of speed) of the moving water slows down. This affects the deposition (dropping of materials) of the sediment in the water. Explain where the larger, medium sized, and smallest sediments drop out. Larger sediments like gravel and pebbles drop closer to the shore because they are bigger and can’t float or flow as well, Medium size particles like sand grains are found farther out where the flow of water slows down, Smaller size particles like clay settle farther out where the flow of water almost completely stops, allowing it to settle.

As the rocks are dragged downward underground, they undergo a great amount of heat and pressure. How does the metamorphic rock in the picture look different that the igneous rock? Metamorphic has layers and igneous does not.

What processes produce metamorphic rocks? exposure to heat and pressure What processes produce igneous rocks? Melting and cooling

What processes produce sedimentary rocks? Uplift to Earth’s surface, weathering and erosion, transportation, cementation, deposition