Absolute Dating VHS

Which statement describes what happens to elements during radioactive decay?

• They release energy.

• They gain new particles.

• They lose energy at a varying rate.

• They have a consistent number of particles.

Tags

NGSS.HS-PS1-8

Which material undergoes radioactive decay?

• all elements that have a half-life

• all elements that contain atoms with protons

• all elements that have turned into a new

• all elements that have a consistent number of particles

Tags

NGSS.HS-PS1-8

Which phrase describes one characteristic of radioactive elements?

• are produced in a laboratory

• decay at a constant rate

• have a consistent number of particles

• release energy and particles to maintain radioactivity

Tags

NGSS.HS-PS1-8

The chart shows rate of decay. Which value is being measured in the columns labeled "Fraction remaining” and "Percentage remaining”?

• years of decay

• quantity of energy

• number of stable atoms

• amount of material that has not decayed

Study the diagram of radioactive decay. Which option identifies what the arrows in the diagram represent?

• atoms and elements

• elements and gas

• energy and particles

• gas and atoms

Tags

NGSS.HS-PS1-8

Which statement accurately describes radioactive dating?

• Geologists use only one type of radioactive dating.

• Geologists compare parent and daughter elements to determine rock type.

• Geologists measure how stable parent elements decay into daughter elements.

• Geologists determine half-life as radioactive elements get trapped in rock and break down over time.

Which unstable element is used to determine the age of volcanic rock?

• argon

• carbon-12

• potassium

• carbon-14

Which stable element is used to determine the age of volcanic rock?

• argon

• carbon-14

• potassium

• carbon-12

The graph shows calculations for potassium-argon dating.

• They can estimate that all the potassium will have decayed within 6.5 billion years.

• They can tell that 1/8 of the argon gas will be left after 3.9 billion years.

• They can determine that a rock is 1.3 billion years old if 1/2 of the potassium has decayed.

• They can see that potassium’s half-life varies from every 1.3 billion years to every 5.2 billion years.

Tags

NGSS.HS-ESS1-6