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Unit 1 Science
Unit 1 Weathering and Erosion
Question | Answer |
---|---|
Weathering | wearing down |
glaciers | huge sheets of ice slip on meltwater causing sediment to flow beneath them and causing damage to Earth's crust |
gravity erosion | the force of gravity pulls sediments downward |
deposition | deposit |
Wind erosion | wind blows and moves Earth's materials from one place to another |
Physical weathering | a crack in the ground fills with water, freezes, and expands causing the crack to gradually get larger |
Louisiana loses ____________ square kilometers of coastline annually. | 75 |
Water Erosion | waves, rain, rivers, and streams can cause Earth's materials to move from one place to another |
Chemical weathering | oxygen and water interact with iron in rocks and cause them to weaken, break down, and become crumbly. |
As the plates vibrate and move past each other | earthquakes can form |
As the plates move together | volcnaoes and mountains can form. |
Volcano | mountain that forms when red hot |
Biological factors | trees, plant roots, animals (living) |
Tornadoes | violent rotating columns of air that take the form of a funnel cloud |
Tsunami | giant wave formed in the ocean that moves inland |
You will often see _______________ as evidence of deposition. | layers |
Positive effects of volcanoes | enriching soil, rebuild land by producing new crust |
tornadoes form when | cool and warm air meet |
hurricane | violent, rotating storm that forms over warm ocean waters near the equator. |
The Hawaiian islands were formed by ______________. | volcanoes |
The outer layer of the Earth is the ______________. | crust |
California has many earthquakes because | the San Andreas Fault runs through the area. |
The Earth is made of ______________ main layers | 4 |
The crust and upper mantle are made of slowly moving plates called ________________. | tectonic plates |
The __________________ can be broken into two parts. | core |