Science Chapter 9 2
Terms
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- landform
- any feature on the surface of the Earth; examples are beaches, mountains, and valleys
- glacier
- a large mass of ice in motion
- mineral
- this is what all rocks are made of
- obsidian and basalt
- these rocks form from melted rock that cools quickly on the Earth's surface
- erosion
- a process where weathered materials are moved from place to place
- weathering
- the process that causes rocks on Earth's surface to crumble, crack, and break
- limestone
- a rock made up of shells, skeletons of sea animals, and hardened parts of sea plants
- weathered materials and rocks
- these become stuck in ice as glaciers move over the land
- hurricane
- a violent storm from the ocean with strong winds and heavy rains
- earthquake
- a sudden movement of rock in the Earth's crust
- volcano
- causes on opening in the surface of the Earth
- lava
- melted rock that flows out of the ground
- landslide
- occurs when earthquakes, heavy rains, and melting snow loosens soil, rocks, and sand
- metamorphic rocks
- rocks that are squeezed and heated below Earth's surface
- sedimentary rocks
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rocks formed when bits of soil, mud, and rock at the bottom of oceans,
rivers, and lakes pile up over time - igneous rocks
- rocks formed when melted rock cools and hardens