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Earth's Changes
Unit 4 Vocabulary
Term | Definition |
---|---|
cementation | Binding and hardening of sediments into sedimentary rock is the process of ______________________. |
compaction | _______________ occurs when sediments are packed tightly together by pressure from layers of rock and soil above them. |
deposition | The process of depositing, or dropping, weathered and eroded sediments in a new location is called ________________.. |
erosion | The movement of sediments from one place to another by wind, water or ice is known as ______________. |
evidence | Facts or other information used to support a claim is ________________. An example is using fossils to understand what environments were like millions of years ago |
fossil | A _________ is evidence such as tracks, impressions or remains of ancient organisms formed in sedimentary rock. |
fossil fuels | Fuels such as coal, petroleum and natural gas that formed over millions of years from the remains of ancient plants and animals are ____________ ________. |
landform | A _______________ is a natural feature on the Earth’s surface such as canyons, deltas, sand dunes, mountains and valleys. |
process of formation | The method by which a substance or object is formed is the _______________ ___ _____________________. |
weathering | ______________ is the process by which wind, water and ice break down exposed rock into sediments. |
canyon | A ____________ is a landform with steep sides and a deep valley that results from erosion by water flowing in a river or stream. |
delta | A ____________ is a landform that forms when sediments are deposited where a river enters an ocean, sea, or lake. |
sand dune | A mound of sand formed when sediments are eroded and deposited by wind is a _________ ______. These usually occur along the beach or in the desert. |
sediments | __________________ are small particles such as sand, silt and gravel that are formed when rock is weathered by wind, water or ice. |
wind, water, ice | _______, ________, and _________ are the agents of weathering, erosion and deposition that create and change landforms on Earth’s surface. |
sedimentary rock | Rock that is formed when layers of sediments are compacted and cemented together is _______________ ______. |
coal | ___________ is a fossil fuel formed from the remains of ancient plants. |
oil (petroleum) | ______________, also known as petroleum, is a liquid fossil fuel that was formed from the remains of ancient marine organisms. |
natural gas | ____________ ______ is a fossil fuel formed from the remains of ancient marine organisms. It is often found with petroleum. |
peat | _____________ is formed from decomposing plant material that dies and sinks under the water in swamps. |
swamp | An area of land covered by shallow water and surrounded by forest is a ________________. |
limitation | A __________________ is anything that makes a model less realistic or makes it harder for us to understand the real world object. |
decomposition | The process by which dead plants and animals decay or rot is __________________. |
extinction | The death of an entire species is known as __________________. |
conservation | _________________ is the wise use of natural resources such as water, forests, land and fossil fuels. |
renewable | Resources that can be replaced again and again, and if used wisely, will not run out are considered to be _______________. |
nonrenewable | Resources that are used up more quickly than nature can replace them are considered to be _______________. |
glacier | A slowly moving river of ice formed by the accumulation and compaction of snow on mountains is a _______________. |
U-shaped valley | A _________ ____________ is formed a a glacier moves downhill carving the mountain and leaving steep sides and a rounded bottom. |
V-shaped valley | A ________ ____________ is caused when rivers wear away rock layers leaving a narrow bottom with steep sloped sides. |
Sediments | __________________ are small particles such as sand, silt and gravel that are formed when rock is weathered by wind, water or ice. |