June 2023 Earth Science Regents Questions 41-50 Question Preview (ID: 62080)

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The iridium-enriched sediment layer was deposited at the end of which geological period?

a) Permian

b) Paleogene

c) Quaternary

d) Cretaceous

Approximately how much of the original uranium-238 is left in the sample of zircon crystals?

a) 100%

b) 50%

c) 25%

d) 12.5%

One reason why carbon-14 was used to determine the age of the woolly rhinoceros tooth was because carbon-14

a) never completely decays

b) has a very long half-life

c) can be found in most organic remains

d) is easily identified in Carboniferous bedrock

Which property of the minerals in quartzite causes them to more easily scratch the bed of the dump truck?

a) streak

b) luster

c) hardness

d) cleavage

Which crushed rock would most likely weather the fastest in areas that receive high levels of acidic rain?

a) trap rock

b) granite

c) quartzite

d) limestone

Which rock would most likely be included in trap rock?

a) phyllite

b) obsidian

c) diabase

d) rhyolite

Which two elements are common to both rocks that make up the 4% section of the United States crushed stone rock types?

a) aluminum and iron

b) silicon and oxygen

c) calcium and magnesium

d) nitrogen and potassium

The four time zones shown on the map are based on Earth's

a) tilted axis

b) orbital velocity

c) rate of rotation

d) rate of revolution

The altitude of Polaris, as measured by an observer in Reno, Nevada, is closest to

a) 39°

b) 41°

c) 119°

d) 121°

Which city has the shortest duration of insolation on December 21?

a) Mobile

b) Omaha

c) Miami

d) Seattle

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