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Rocks and Weathering
Questions to Review
Question | Answer |
---|---|
Some plants produce acids which result in _______ weathering. | chemical |
A rock that contains tiny, connected spaces through which water can move is said to be ________. | permeable |
One agent of chemical weathering is _______, which combines with water to form Carbonic Acid. | carbon dioxide |
The actions of anima;s most commonly can cause the type of weathering known as _______. | mechanical weathering |
Rapid chemical weathering can be caused by _______, which is rain combined with pollutants. | Acid Rain |
Some plants produce acids that result in ______ weathering. | chemical |
The factors that determine the rate of weathering are the type of _____ and _____. | Rock and climate |
Acid rain causes very rapid _____ weathering. | chemical |
The most important agent of chemical weathering is _____. | water |
After chemical weathering, the chemical makeup of the weathered rock is ______ than the original rock . | different |
Freezing and thawing are an example of ______ weathering. | mechanical |
The movement of rock particles by ice, wind, and water, or gravity is called _____. | erosion |
The rate of chemical weathering is ____ in hot, wet climates than in cold, dry climates | faster |
The gas that causes rock containing iron to oxidize is ____. | oxygen |
The type of weathering that occurs due to release of pressure is _____ weathering. | mechanical |
Plant roots that force cracks in rocks farther apart are an agent of _____ weathering | mechanical |
What has a rock probably been chemically weathered by if it contains iron and becomes soft, crumbly, and reddish-brown in color? | oxygen |
What may the growth of plant roots and animal activity result in? | mechanical weathering |
What is the agent of mechanical weathering called in which rock is worm away by the grinding action of the other rock particles? | mechanical |
Granite will last a long time when it is used for building in what type of climate? | hot |
What kind of weathering causes the mineral composition of rocks to change? | chemical |
What type of climate causes weathering to happen rapidly? | hot and wet |
What is ice wedging? | water freezing in rocks and acting like a wedge to break apart |
What is uniformitainsm | the same process that happened in the past and is happening today |
Why does a permeable rock weather easliy? | it has tiny air spaces that allows water to seep into the rock |
What can scientists infer form the rounded shape of the Appalachian Mountains? | they have been weathering for many years |
A marble statue is left exposed to the weather. What agent of mechanical weathering probably will cause it to weather? | freezing and thawing |
Describe how freezing and thawing of water causes mechanical weathering. | when water freezes in a crack into a rock, it expands and makes the cracks bigger, then it freezes again |
Explain how oxygen causes chemical weathering. | freezing and thawing. Iron combines with oxygen and water to form chemical weathering (oxydation) |
For hundreds of years, an ancient statue had been kept outdoors in a country with a dry, mild climate. Predict how the city's climate will affect the weathering of the state. | Pollution and the wet climate would cause acid rain , the hot/cold may result in freezing and thawing and ice wedging, and the fastest weathering occurs in that wet climate. |