Building a Timeline

Juan claims that layer X formed between 498.5 million and 488.3 million years ago. Use evidence from the diagram to determine if he is right

• Yes, he's right

• No, he's not right

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NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

Index fossils are the remains of species that existed on Earth for relatively short periods of time.

• true

• false

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NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

Scientists can use absolute dating techniques on a specific form of carbon called carbon14. Volcanic ash contains large amounts of carbon-14. The diagram below shows partial rock columns from three different locations, with the same layer of volcanic ash identified by the dotted lines. How can analyzing these layers of ash help scientists learn more about the rock columns in the three locations?

• Scientists can determine the location of the volcano that erupted by comparing the thickness of the ash layer in each of the columns.

• Scientists can determine that the ash layer was deposited at different times in each column because it is found at different depths in the columns.

• Scientists can determine the age of the ash layer in one location and use that information to estimate the age ranges of matching sequences of rocks in other locations.

• Scientists can determine whether the volcanic eruption that produced the ash layer was responsible for the extinction of species found in the rock columns in the other locations.

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NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

The Geologic Time Scale is a record of what?

• old geologists

• sweet geology music

• the known history of rocks and fossils

• a list of every living thing ever

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

Which fossil is the youngest?

• fossil A

• fossil B

• fossil C

• fossils A and B are the same age

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

These specialized fossils indicate to geologists the boundaries in geological time and determine the age of rocks.

• Index fossils

• Limestone fossils

• Amber fossils

• Cast fossils

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NGSS.MS-ESS1-4

Which of the following best describes the purpose of a timeline in scientific research?

• To organize events in chronological order

• To predict future scientific discoveries

• To list all scientific theories

• To compare different scientific fields

In the context of Earth's history, what does a geological timeline represent?

• The sequence of human evolution

• The chronological order of major geological and biological events

• The timeline of technological advancements

• The history of climate change

Tags

NGSS.MS-ESS1-4

Which scientific tool is most commonly used to create a timeline of Earth's past climates?

• Thermometer

• Barometer

• Ice cores

• Seismograph

What is the primary benefit of using a timeline to study the history of scientific discoveries?

• It helps in memorizing scientific terms

• It provides a visual representation of the progression of scientific knowledge

• It lists all scientists alphabetically

• It predicts future scientific trends