August 2017 Earth Science Regents Questions 41-50 Question Preview (ID: 55073)

Use Your Knowledge Of Earth Science To Answer All Questions In The Data Set. You Will Need Your Earth Science Reference Tables And A Calculator To Answer Some Of The Questions. Good Luck. Corresponding Data Sets: 55073, 55072, 55071, 55070, 55065. TEACHERS: click here for quick copy question ID numbers.

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The age of which index fossil could be determined by using carbon-14?

a) Coelophysis

b) Elliptocephala

c) Mastodont

d) Naples Tree

How many half-lives have passed if a sample contains 25% of its original carbon-14?

a) 1 half-life

b) 2 half-lives

c) 3 half-lives

d) 4 half-lives

Which disintegration product is represented on the graph?

a) 206Pb

b) 87Sr

c) 40Ar

d) 14N

Radioactive carbon-14 is often useful in determining the absolute age of geologic samples because radioactive isotopes

a) decay at a regular rate

b) become less stable during decay

c) remain unchanged over time

d) stabilize after four half-lives

Which cross section represents the most likely pattern of sediments deposited where the river enters the ocean at location B?

a) smallest particles near point B then gradually larger as you go into the ocean

b) biggest particles near point B then gradually smaller as you go into the ocean

c) smallest particles near point A then gradually larger as you go into the ocean

d) biggest particles near point A then gradually smaller as you go into the ocean

Which cross section best represents the profile of the bottom of the river between points X and Y at location A?

a) equally deep across the X-Y profile

b) deepest at X

c) deepest in the middle of X - Y

d) deepest at Y

The area of land drained by this river and its tributaries is best described as the river’s

a) topography

b) watershed

c) water table

d) floodplain

These tubes are placed in water up to the level of line XY to demonstrate capillarity. After one hour, the height of the water above line XY will be

a) highest in tube A

b) highest in tube B

c) highest in tube C

d) the same height in all three tubes

Which bar graph would best represent the rate of water infiltration through tubes A, B, and C?

a) 1

b) 2

c) 3

d) 4

What is the approximate time of day when the Sun is at position C?

a) 6 a.m

b) 9 a.m

c) 3 p.m.

d) 6 p.m.

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