Life is all about choices. Right now, you could 1) watch TV, 2) go out for pizza with your room mate, 3) study for your next exam. Which choice are you going to make?

1			Physical disintegration of rocks into smaller pieces is called: Need a Hint?
			A)	mechanical weathering
			B)	chemical weathering
			C)	pedogenesis
			D)	abrasion
2			The decomposition of rock from exposure to water and atmospheric gases is known as: Need a Hint?
			A)	mechanical weathering
			B)	salt wedging
			C)	chemical weathering
			D)	pedogenesis
3			A mechanical weathering process caused by pressure release (or unloading) is: Need a Hint?
			A)	salt wedging
			B)	hydrolysis
			C)	exfoliation
			D)	abrasion
4			Where do sediments come from? Need a Hint?
			A)	there have always been sediments on Earth
			B)	sediments accumulated as dust fell to Earth from outer space
			C)	rock weathering produces sediment
			D)	I don’t know where sediment comes from
5			In which environment is frost wedging likely to be prevalent? Need a Hint?
			A)	a tropical rain forest
			B)	a high mountain
			C)	a desert
			D)	polar areas
6			Clay is a product of: Need a Hint?
			A)	chemical weathering
			B)	mechanical weathering
			C)	rapid cooling of magma
			D)	oxidation
7			Oxidation occurs when: Need a Hint?
			A)	rocks are deeply buried
			B)	rocks are exposed to the atmosphere
			C)	water dissolves rocks
			D)	feldspars are chemically altered to clays
8			Which of the following is not at type of mechanical weathering? Need a Hint?
			A)	root wedging
			B)	frost wedging
			C)	unloading
			D)	all of these are types of mechanical weathering
9			Exfoliation is a natural process which results from: Need a Hint?
			A)	activities of man
			B)	chemical weathering of rocks
			C)	thermal expansion of rocks
			D)	unloading of deeply buried rocks
10			The most common end product of the chemical weathering of quartz is: Need a Hint?
			A)	clay
			B)	pyroxene
			C)	calcite
			D)	quartz does not weather chemically
11			Soil with approximately equal proportions of sand, silt, and clay along with generous amounts or organic matter is called: Need a Hint?
			A)	loam
			B)	caliche
			C)	humus
			D)	podzol
12			Which of the following is characteristic of soil horizons? Need a Hint?
			A)	they can be distinguished from one another by appearance and chemical composition
			B)	boundaries between soil horizons are usually transitional rather than sharp
			C)	they are classified by assigned letters
			D)	all of the above
13			Pedocal soils: Need a Hint?
			A)	form in arid (dry) climates
			B)	tend to be thin
			C)	are characterized by little leaching, scant humus
			D)	all of the above
14			The soil horizon rich in organic matter is the: Need a Hint?
			A)	A horizon
			B)	B horizon
			C)	C horizon
			D)	O horizon
15			Tropical soils are typically: Need a Hint?
			A)	rich in organic material
			B)	very fertile
			C)	deeply leached
			D)	good for agriculture
16			The single most effective agent of chemical weathering at the Earth's surface is: Need a Hint?
			A)	carbonic acid
			B)	water
			C)	hydrocholoric acid
			D)	carbon dioxide
17			A general term for the process whereby feldspar is weathered to clay is: Need a Hint?
			A)	pedogenesis
			B)	metamorphosis
			C)	hydrolysis
			D)	mudification
18			Which of the following minerals will weather most rapidly at Earth's surface? Need a Hint?
			A)	olivine
			B)	quartz
			C)	kaolinite
			D)	biotite
19			The normal pH of rainwater is about: Need a Hint?
			A)	3.0
			B)	5.5
			C)	7.0
			D)	8.2
20			What is the parent material of all soils? Need a Hint?
			A)	minerals
			B)	regolith
			C)	rock
			D)	clay