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Earth Surface
Earth's Changing Surface
| Question | Answer |
|---|---|
| The process by which natural forces move weathered rock and soil from one place to another is called _______. | erosion |
| Landslides, mudflows, slump, and creep are all examples of _______. | mass movement |
| Mass movement is caused by _______. | gravity |
| A stream or river that runs into another stream or river is called a _______. | tributary |
| A river flowing across a wide flood plain begins to form looplike bends called _______. | meanders |
| Deltas are built up by _______. | deposition |
| The energy that produces ocean waves comes from _______. | wind blowing across the water's surface |
| The process by which wind removes surface materials is called _______. | deflation |
| Particles of clay and silt eroded and deposited by the wind are called _______. | loess |
| Glaciers can only form when _______. | more snow falls than melts |
| The process in which rock fragments freeze to the bottom of a glacier and then are carried away when the glacier moves is called _______. | plucking |
| A(n) _______ is evidence that an area was once covered by a glacier. | u-shaped valley |
| A small depression that forms when a chunk of ice is left in glacial till is known as a _______. | kettle |
| The agent of mechanical weathering in which rock is worn away by the grinding action other rock particles is called _______. | abrasion |
| Ice wedging causes mechanical weathering of rock by means of _______. | freezing and thawing of water |
| _______ weathering causes the mineral composition of rocks to change. | chemical |
| A rock containing iron has been chemically weathered by _______ if it becomes soft and crumbly and reddish-brown in color. | oxygen |
| The most important factors in determining the rate of weathering are _______. | rock type and climate |
| Soil formation begins with the weathering of _______. | bedrock |
| Soil that is rich in humus has high _______. | fertility |
| Living organisms in soil help to _______. | mix the soil and make humus |
| Decomposers are the soil organisms that _______. | break down and digest the remains of dead organisms |
| The practice of plowing fields along the curves of a slope is called _______. | contour plowing |
| The type of soil called loam is made up of _______. | nearly equal amounts of silt, sand, and clay |
| The process that lays down sediment in a new location is _______. | deposition |
| A _______ is a cone-shaped deposit of calcite that builds up on the floor of a cave. | stalagmite |
| The loose layer of leaves on the surface of the soil is called _______. | litter |
| A kind of glacier called a _______ forms when ice and snow build up in a mountain valley. | valley glacier |
| The process in which a glacier loosens and picks up rock as it moves is called _______. | plucking |
| A _______ is the sharpened peak formed from a glacier descending from the top of a mountain. | horn |
Created by:
Pacelli
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