Absolute

Scientists use radioactive decay to measure...

• relative time

• absolute time

• half-lives

• time of day

Tags

NGSS.HS-PS1-8

How does absolute age differ from relative age?

• only absolute dating indicates which rock is older than another

• only absolute dating finds the age in years

• only relative dating finds the age in years

Tags

NGSS.HS-ESS1-5

Geologists use radioactive dating to determine THE ABSOLUTE AGE OF ROCKS.

• True

• False

Which is an example of absolute age?

• "This trilobite is older than that dinosaur."

• "That stromatolite is the absolute oldest fossil I've ever seen."

• "Velociraptors lived 71-75 million years ago."

• "The oldest sedimentary layer is on the bottom."

This diagram represents a sample of ⁸⁷Rb. Which diagram represents the correct proportion of ⁸⁷Rb to its decay product, ⁸⁷Sr, after two half-lives?

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Tags

NGSS.HS-PS1-8

Why is radioactive decay useful for determining absolute age?

• Radioactive substances decay at a predictable rate.

• All Earth materials contain the same radioactive substances.

• The mass of radioactive isotopes in a material is equal to the age of the material.

• The half-life of a radioactive substance decreases by half after a certain amount of time.

Tags

NGSS.HS-PS1-8

What is absolute zero in terms of temperature?

• 0 Kelvin

• 0 Celsius

• 0 Fahrenheit

• 273 Kelvin

Tags

NGSS.HS-PS3-4

Which of the following is an example of absolute dating?

• Using tree rings to date a tree

• Using the position of rock layers

• Using carbon-14 to date a fossil

• Using the color of a rock

Absolute magnitude in astronomy refers to what?

• The brightness of a star as seen from Earth

• The actual brightness of a star

• The distance of a star from Earth

• The size of a star

What is the absolute value of -5?

• -5

• 0

• 5

• 10