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23 Cards in this Set
- Front
- Back
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There are how many sources of physical weathering?
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five
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List the five causes of physical weathering.
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1. temperature
2. organic activity 3. gravity 4. ice 5. abrasion |
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Temperature causes weathering especially when changes in it are...
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rapid
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Give an example of weathering caused by extreme temperature.
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1. a forest fire causes rock to crack
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Give an example of weathering caused by a rapid change of temperature.
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1. a coffe mug taken from the freezer shatters when hot coffee is poured into it
2. a glass bowl taken from the oven shatters when placed on a counter puddled with cold water |
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A plant's roots lifting and breaking rock is an example of phtsical weathering caused by what?
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organic activity
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Give two examples of forces causing abrasion.
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1. a sand storm
2. rivers, streams, waves, etc. carrying sand, sediment and rock |
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Rock slides in Yosemite National Park exemplify physical weathering caused by...
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gravity
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A physical weathering cause that contributes to the formation of potholes on road surfaces is...
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ice
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The #1 cause of chemical weathering is...
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water
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Water alone causes chemical weathering of rock by...
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dissolving minerals that hold rock together
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A chemical weathering cause formed from water vapor and rain combining with sulfur compounds is...
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acid rain
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Acid rain is especially prevalent in modern times because...
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factories burn excessive amts. of fossil fuels that releases sulfur compounds into the air
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List four physical weathering effects of acid rain.
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1. wears rock
2. wears manmade objects 3. kills forests 4. kills fish |
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A weak acid formed from water combining with Co2 is...
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carbonic acid.
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Carbonic acid causes chemical weathering to ______________, especially _________________.
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minerals, calcium
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What Earth structure can be formed from limestone being completely weathered away by carbonic acid?
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caverns
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Name a plant that clings to rock and causes chemical weathering with its weak acid.
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lichens
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When oxygen in air combines with certain minerals and elements, what occurs?
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oxidation
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The greatest form of oxidation is...
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iron oxide (rust)
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Removal and relocation of rocks and soil by natural forces is...
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erosion
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The breaking up of rock caused by exposure to natural forces is...
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weathering
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The depositing of eroded materials in a new location is...
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deposition
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