Unit 10: Study Guide Earth's History

The Law of Superposition states that in any sequence of undisturbed sedimentary rocks, the oldest layers are at the bottom and the youngest layers are at the top.

• The oldest layers are at the top and the youngest layers are at the bottom.

• The oldest layers are at the bottom and the youngest layers are at the top.

• All layers are of the same age.

• The age of the layers cannot be determined.

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NGSS.MS-ESS1-4

What can mess up the law of Superposition?

• Erosion

• Earthquake

• Volcanic activity

• All of the above

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NGSS.MS-ESS2-2

Which one is the oldest fossil? Which is the youngest? Why?

• The oldest fossil is D, and the youngest is A because of their stratigraphic positions.

• The oldest fossil is B, and the youngest is A because of their stratigraphic positions.

• The oldest fossil is C, and the youngest is D because of their stratigraphic positions.

• The oldest fossil is D, and the youngest is C because of their stratigraphic positions.

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NGSS.MS-ESS1-4

What is Relative Age?

• The exact age of an object or event in years

• The age of an object or event in comparison to another

• The time period during which an object was formed

• The age determined by radiometric dating

What is Absolute age?

• A method to determine the exact age of a rock or fossil.

• A technique to compare the age of two fossils.

• A way to measure the size of a fossil.

• A process to identify the type of rock.

The difference between Relative age and absolute age is:

• Relative age is the age of a rock or fossil compared to other rocks or fossils, while absolute age is the numeric age of a rock or fossil.

• Relative age is the numeric age of a rock or fossil, while absolute age is the age of a rock or fossil compared to other rocks or fossils.

• Relative age and absolute age are the same.

• Relative age is used in biology, while absolute age is used in geology.

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NGSS.MS-ESS1-4

The fossil record is a collection of preserved remains or traces of organisms from the past. Does it contain every organism that has lived on Earth?

• Yes, it contains every organism.

• No, it does not contain every organism.

• It contains only dinosaurs.

• It contains only plants.

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NGSS.MS-LS4-1

A fossil is a preserved remnant or impression of an organism that lived in the past. How are fossils formed?

• Through the rapid burial and mineralization of remains

• By the organism being frozen in ice

• Through the organism being trapped in amber

• By the organism being mummified

Not everything that dies becomes a fossil.

• True

• False

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NGSS.MS-LS4-1

An index fossil is used for dating and correlating the strata in which it is found. Which of the following is an example of an index fossil?

• Trilobite

• Dinosaur bone

• Human artifact

• Meteorite

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NGSS.MS-ESS1-4