THIS IS A TEST WORTH 30 POINTS PLS HELP Question 1 (3 points)
Why can the geologic record be analyzed by looking at different rock layers?

Question 1 options:

All layers have the same age.

The layers have different ages with the youngest layers on top.

The layers have different ages with the oldest layers on top.

The layers have different ages with the youngest layers on bottom.

Question 2 (3 points)
What can be used to determine the relative age of two rocks?

Question 2 options:

vertical position

the presence of unconformities

radioactive dating of each layer

relative age cannot be determined

Question 3 (3 points)
Which factor is the most accurate in determining the absolute age of two rocks?

Question 3 options:

vertical position

the presence of unconformities

radioactive dating of each layer

comparing fossils in the layers

Question 4 (3 points)
The half-life of an element is 150 years. If a 40-gram sample was originally deposited, how much is left
after 300 years?

Question 4 options:

30 grams

20 grams

10 grams

5 grams

Question 5 (3 points)
Which example is a trace fossil?

Question 5 options:

dinosaur footprint

dinosaur bone

dinosaur egg

shark tooth

Question 6 (3 points)
Which type of fossils are used to identify specific time periods?

Question 6 options:

trace fossils

body fossils

index fossils

all fossils

Question 7 (3 points)
Which example is a trait of an index fossil?

Question 7 options:

resembles a living species

found in a limited area

found in a limited time span

a particular kind of organism

Question 8 (3 points)
What type of geologic change does the image show?

Question 8 options:

folding

tilting

erosion

lack of depostion

Question 9 (3 points)
Which series of words describes lengths of geologic time from longest to shortest?

Question 9 options:

eon > era > period

era > period > eon

period > eon > era

era > eon > period

Question 10 (3 points)
Consider the geologic time scale shown below. A scientist discovered two fossils. Fossil A is from the Triassic time period. Fossil B is from the Cambrian time period. Which one is older?

Question 10 options:

A is older.

B is older.

They are the same age.

We cannot determine which one is older.