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Geologic Time Review
Test Description: Review for the Geologic time test.
Instructions: Answer all questions to get your test result.
1) In what way does the law of superposition show geological evolution?
A
there is no difference in the position of layers in regards to age
B
the youngest layer is in the middle and the oldest layer is on the top
C
the youngest layer is on the bottom and the oldest layer is on the top
D
the oldest layer is on the bottom and the youngest layer is on the top
2) Which of the following is the BEST example of an index fossil?
A
a fern print on a rock
B
a dinosaur bone
C
a trilobite fossil
D
an animal’s paw print
3) What is the BEST example of an unconformity?
A
a crack in the plates
B
missing layer of rock
C
sedimentary deposits
D
the crust of the Earth
4) How would a biologist BEST determine the reason for extinction of a species?
A
read previous theories for connections
B
analyze data collected on rock layers over time
C
conduct experiments on carbon dating
D
examine fossils of plants and animals in different rock layers to see how these organisms have chang
5) The process by which the age of a rock is determined by measuring the amount of radioactive isotopes present in the rock or rock sample
A
Radioactive Dating
B
Absolute Dating
C
Law of superposition
D
Relative dating
6) If you found many tracks of the same species of prehistoric animal in an area, what might you conclude about the animal?
A
It hunted alone
B
It lived in groups
C
It did not produce many offspring
D
It was the only species there
7) Scientists in Alaska discover fossils of several organisms that they know lived only in warm climates. What does this discovery tell them about the climate of Alaska in the past?
A
The climate of Alaska was warmer in the past than it is today.
B
The organisms also lived in cold climates.
C
Alaska used to be located near the equator.
D
The climates of Alaska has not changed.
8) Fossils of warm-weather plants were found on an island in the Arctic Ocean. What can best be concluded from this discovery?
A
Seeds of plants have been carried to the island by migratory birds.
B
The island drifted from a tropical region to its present location.
C
Spores of plants drifted by air currents to the island.
D
Ocean currents carried the plants to the island.
9) Which best explains how geologic time scales can help scientists study the evolution of life on Earth?
A
They describe the existence of rocks before there was life on Earth.
B
They compare the life histories of species that have used rocks as habitats.
C
They show that geological features have evolved at the same rate as organisms.
D
They correlate the existence of life on Earth with geological events.
10) A layer of marine fossils is discovered in a desert environment. Which hypothesis best explains the discovery?
A
The area was once covered by water.
B
A catastropic event once occurred in the area.
C
Volcanic activity once occurred in the area.
D
Erosion turned most of the limestone in the area into sand.
*select an answer for all questions
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