Quiz about Geologic Time, Fossils, Relative and Absolute Dating

Question 1

Which of these periods is the youngest ?

Accepted Answer

Cretaceous

Answer

Permian

Answer

Triassic

Answer

Jurassic

Question 2

What is the Eon that we are currently in?

Accepted Answer

Phanerozoic

Answer

Mesozoic

Answer

Cenozoic

Answer

Quarternary

Answer

Holocene

Question 3

What is the Era that we are currently in?

Accepted Answer

Cenozoic

Answer

Phanerozoic

Answer

Mesozoic

Answer

Quarternary

Answer

Holocene

Question 4

What is the period that we are currently in?

Accepted Answer

Quarternary

Answer

Phanerozoic

Answer

Mesozoic

Answer

Cenozoic

Answer

Holocene

Question 5

What is the epoch that we are currently in?

Accepted Answer

Holocene

Answer

Phanerozoic

Answer

Mesozoic

Answer

Cenozoic

Answer

Quarternary

Question 6

Which two fossils would make good index fossils?

Accepted Answer

Ammonite

Accepted Answer

Trilobite

Answer

Gastropod

Answer

Crinoid

Question 7

Which fossil is the oldest?

Accepted Answer

Trilobite

Answer

Coral

Answer

Crinoid

Answer

Gastropod

Question 8

Which fossil is the youngest?

Accepted Answer

Fern

Answer

Trilobite

Answer

Coral

Answer

Ammonite

Question 9

Radiometric dating involves measuring concentrations of ______________generated during radioactive decay.

Accepted Answer

isotopes

Answer

molecules

Answer

neutrons

Answer

sediment

Question 10

Every 5,730 years, what percentage of Carbon 14 decays?

Accepted Answer

50

Answer

100

Answer

75

Answer

25

Question 11

Scientists can determine the age of fossils by studying the rate of decay of radioactive elements, such as uranium, within the rocks and fossils. This type of fossil dating is called ______________________________.

Accepted Answer

absolute dating

Answer

chemical dating

Answer

relative dating

Answer

mold dating

Question 12

The law of superposition allows geologists to determine exact timelines. (T or F)

Accepted Answer

False

Answer

True

Question 13

Which fossil is the youngest?

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 14

A scientist finds the bones of a dinosaur. What could help the scientist determine the approximate age of the dinosaur bones?

Accepted Answer

the index fossils in the area of the bones

Answer

the birds living in the area of the bones

Answer

the weather conditions in the area of the bones

Answer

the kinds of trees living in the area of the bones

Question 15

Which events are most common along tectonic plate boundaries? (select two)

Accepted Answer

earthquakes

Accepted Answer

volcanoes

Answer

erosion

Answer

hurricanes

Question 16

Imagine you are examining the age of a layer of volcanic ash using the decay of the element Uranium. Uranium has a half life of 4.5 billion years. When you examine your samples, you find a ratio of parent to daughter Uranium of about 12% to 88%. How many half lives had it gone through?

Accepted Answer

3

Answer

1

Answer

2

Answer

4

Question 17

Determine the number of protons, electrons, and neutrons in the Carbon-14 isotope.

Accepted Answer

P=6E=6N=8

Answer

P=6E=6N=7

Answer

P=5E=6N=8

Answer

P=5E=6N=7

Question 18

Radioactive isotopes ____.

Accepted Answer

are unstable, and will decay

Answer

are stable, and will not decay

Answer

are stable, but will decay

Answer

are unstable, but will not decay

Question 19

What is the amount of time it takes for this radioactive element to decay? Each half life is __________years long?

Accepted Answer

5

Answer

1

Answer

10

Answer

20

Question 20

How do we know that these are isotopes of the same atom?

Accepted Answer

They have the same amount of protons

Answer

They have the same color circles inside them.

Answer

They are side by side on the periodic table

Answer

They are all unstable

Question 21

Which is the oldest?

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 22

Which is the youngest?

Accepted Answer

E

Answer

B

Answer

D

Answer

F

Question 23

A scientist used radiometric dating to determine that the igneous rock layer "E" is 5,000 years old. How old would you infer that the sedimentary rock layer "F" is?

Accepted Answer

6,000 years old

Answer

1,000 years old

Answer

2,000 years old

Answer

4,000 years old

Question 24

Which isotope would you use to determine the age of a dinosaur bone?

Accepted Answer

Uranium-235 (4.5 billion years)

Answer

Carbon 14 (5,730 years)

Answer

Aluminum-26 (740,000)

Question 25

You find a rock that contains a fossil. What type of rock is this?

Accepted Answer

Sedimentary rocks

Answer

Igneous rocks

Answer

Metamorphic rocks

Question 26

Remains of animals can be preserved by preventing them from decaying. What substances might help preserve parts or a whole animal

Accepted Answer

tar, amber, ice

Answer

ice, carbonization, trace

Answer

rock, amber, ice

Answer

tar, carbonization, rock

Question 27

These fossils are distinguishable from other fossils because they were scattered over a large region, very common, and lived during a short span of geologic time

Accepted Answer

index

Answer

trace

Answer

permineralized

Answer

mold and cast

Question 28

What type of fossil is pictured?

Accepted Answer

trace fossil

Answer

cast

Answer

petrified fossil

Answer

preserved remains

Question 29

What are the remains, imprints, or traces of once-living organisms?

Accepted Answer

fossil

Answer

index fossils

Answer

mold

Answer

cast

Question 30

Which layer of rock is the oldest?

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 31

What is a cast fossil?

Accepted Answer

Forms when the mold fills in

Answer

Any part of the actual animal or plant.

Answer

Fossilized imprint of an organism's tracks

Answer

Fossilized impression of the actual organism

Answer

Hardened tree/ plant sap

Question 32

What are the relative ages of the features in order from oldest to youngest?

Accepted Answer

Limestone, Siltstone, Fault, Basalt

Answer

Limestone, Basalt, Fault, Siltstone

Answer

Siltstone, Fault, Basalt, Limestone

Answer

Limestone, Fault, Basalt, Siltstone

Question 33

Which of the following correctly lists the layers in order from oldest to youngest?

Accepted Answer

E, B, C, D, A

Answer

A, B, C, D, E

Answer

E, D, C, B, A

Answer

C, B, A, D, E

Question 34

The length of time required for half of the radioactive atoms in a sample to decay is its...

Accepted Answer

half-life

Answer

era

Answer

age

Answer

eon

Question 35

How does absolute age differ from relative age?

Accepted Answer

only absolute dating finds the age in years

Answer

only absolute dating indicates which rock is older than another

Answer

only relative dating finds the age in years

Question 36

What is the half-life of iodine-131?

Accepted Answer

8 days

Answer

32 days

Answer

16 days

Answer

24 days

Question 37

What is the Half life of this isotope?

Accepted Answer

10 seconds

Answer

5 seconds

Answer

15 seconds

Answer

20 seconds

Geologic Time, Fossils, Relative and Absolute Dating

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