54) Which statement IS true about radioactive decay? A. It occurs at a constant

Question

54) Which statement IS true about radioactive decay?

A. It occurs at a constant rate

B. It occurs at a slow, variable rate

C. It occurs at an exponential rate

D. It is a finite process

E. It occurs slowly at first, then speeds up

55) Which of the following could you date with radiocarbon (C-14)?

A. A volcanic quartz grain 10,000 years old

B. A 25,000 year old tree

C. An oyster 10 million years old

D. Remains of a million year old bone

33) Which hydrologic process is important for adding water to streams?

A. Evaporation

B. Transpiration

C. Precipitation

D. A & C

E. None of the above

34) Smaller streams that flow into a trunk stream are called?

A. Trunklets

B. Streamlets

C. Tributaries

D. None of the above

E. All of the above

35) Drainage patterns are controlled by which of the following?

A. Discharge

B. Underlying geology

C. Soil cover

D. Capacity

E. Competence

36) Continental divides separate flow to different what?

A. Catchments

B. Drainage basins

C. Oceans

D. Watersheds

E. None of the above

37) Which of the following would you look for to see if a hill slope was unstable and slumping?

A. Bent trees

B. Cows leaning in an open field

C. Fences leaning downslope

D. Headscarp

E. A, C & D

Explanation / Answer

54) It occurs at a constant rate.

the surrounding temperature , pressure conditions wont effevt the decay and It occurs at a constant rate

55) A volcanic quartz grain 10,000 years old

since c14 has least halflife we can date only younger formations in geological timescale

33) A & C.

both are inmportant , witout evaporation there will be no precipitation

34) trributaries

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