Shared Flashcard Set

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weathering and erosion review
TEST TOMORROW!
23
Science
7th Grade
01/24/2008

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Cards

Term
type of rock
Definition
what can also affect the rate of weathering in a particular climate?
Term
mechanical weathering
Definition
what occurs when rocks are broken apart by physical processes and the chemical composition stays the same?
Term
soil formation
Definition
what depends on the amount of weathering that occurs in a specific place?
Term
Weathering
Definition
what are surface processes that work to break down rock into smaller pieces?
Term
water, wind, ice wedging, plants, animals, temperature changes, and pressure.
Definition
name 7 agents of mechanical weathering.
Term
sediment
Definition
what are small broken down pieces of rock?
Term
acid rain
Definition
what is caused by burning of fossil fuels?
Term
chemical weathering
Definition
what occurs when chemical reactions dissolve the minerals in rocks or change them into different mineral? it changes the chemical composition which weaken the rock.
Term
carbonic acid
Definition
what dissolves minerals in limestone caves?
Term
water, oxygen, plant acids, and other acids.
Definition
name the four agents of chemical weathering.
Term
climate
Definition
what is the pattern of weather that occurs in a particular area over many years? (this is the definition)
Term
mechanical weathering
Definition
what type weathering is more rapid in cold dry climates?
Term
deposition
Definition
what it is called when the dropping of sediments that occurs when agents of erosion lose energy?
Term
chemical weathering
Definition
what type of weathering is more rapid in warm wet (tropical) climates?
Term
erosion
Definition
what is the process that wears away surface and moves them from one place to another?
Term
surface area
Definition
the more _______________ that exposed to weathering, the faster the rock will weather.
Term
sediments carried away
Definition
define erosion
Term
wind, water, gravity, glaciers, and mass movement
Definition
name 5 agents of erosion.
Term
sediments dropped somewhere else
Definition
define deposition
Term
sediments are broken off
Definition
define weathering
Term
soil
Definition
what is a mixture of weathered rock, decaying organic matter, mineral fragments, water and air. takes thousands of years to make
Term
plants need soil to grow. no soil~no crops.
Definition
soil erosion is harmful because...
Term
human activites
Definition
many _______________ disturb the natural balance between soil production, and soil erosion.
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