Geologic time scale
Authored by Natasha Gwatney
Science
7th Grade
NGSS covered
Used 26+ times
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19 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The diagram to the right shows layers of Earth’s crust that contain different kinds of fossils. Layers B and D have fossils of different ammonites, whose hard spiral shells fossilize easily. Diego always found ammonites with ridged shells and 3 coils in rock matching layer B, and ammonites with smooth shells and 5 coils in rock matching layer D. What can Diego conclude about how ammonites changed over time?
Ammonites have not changed over great periods of geologic time.
Ammonites with smooth shells and 5 coils lived after ammonites with ridged shells and 3 coils.
Ammonites with smooth shells and 5 coils lived before ammonites with ridged shells and 3 coils.
Ammonites with smooth shells and 5 coils lived at the same time as ammonites with ridged shells and 3 coils.
Tags
NGSS.MS-LS4-1
NGSS.MS-LS4-2
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Isabel was studying the fossil of a particular species of reptile. The fossils had been found both on the coast of Brazil and on the coast of western Africa. She could not understand how the same species existed in these two distant locations. What is the most likely explanation for this?
Brazil and western Africa were both part of one connected landmass long ago in Earth’s history.
The reptiles from Africa floated across the ocean to populate Brazil long ago in Earth’s history.
The reptiles dug an underground tunnel they use to travel between continents.
Brazil and western Africa have similar environments today, so the same reptile species probably evolved in exactly the same way in both places.
Tags
NGSS.MS-LS4-1
NGSS.MS-ESS2-3
NGSS.MS-LS4-2
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Why is the Law of Superposition not always an accurate way to determine relative age of rock layers?
Sometimes rock layers play musical chairs and get all mixed up.
Forces such as gravity and magnetism can change the location of rock layers such that older rocks are sometimes located above younger rocks.
Rock layers have no set pattern to determine the relative age.
Forces such as tilting, folding, faults, intrusions, and unconformities can change the location of rock layers such that older rocks are sometimes located above younger rocks.
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Both carbon-12 and carbon-14 are found in organic materials, such as plants and animals. Carbon-12 is stable and does not decay over time while Carbon-14 is radioactive. When plants and animals are alive, they take in both kinds of carbon. When plants and animals die, only the radioactive isotopes in their cells begin to change. Which of the following is the best description about what happens to both the carbon-12 and the carbon-14 in an organism after it dies?
The amounts of carbon-12 and carbon-14 will remain the same over time.
The amount of carbon-12 will remain the same over time, but the amount of carbon-14 will increase.
The amount of carbon-12 will remain the same over time, but the amount of carbon-14 will decrease.
The amount of carbon-12 will decrease over time, but the amount of carbon-14 will remain the same.
Tags
NGSS.HS-PS1-8
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which of the following gives evidence that the Earth has changed over time?
Fossils show how living conditions have changed and the adaptations animals have made to survive.
Continents look like a puzzle that once fit all together.
All the above.
None of the above.
Tags
NGSS.MS-ESS1-4
NGSS.MS-LS4-1
NGSS.MS-ESS2-2
NGSS.MS-ESS2-3
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which of these is the best indication of the relative age of a rock layer?
The thickness of the layer.
The chemical make-up of the layer.
Asking the layers to stand in a line from oldest to youngest without speaking.
The position of that layer compared to other layers.
Tags
NGSS.MS-ESS1-4
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Using the image to the right, estimate the relative age of the fossil in layer 3.
90,000
75,000
102,000
82,000
Tags
NGSS.MS-ESS1-4
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