Astr 151 Lecture

What is the half-life of material X?

• 5,000 yr

• 10,000 yr

• 50,000 yr

• 100,000yr

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A sample of wood found in an ancient tomb contains 25% of its original carbon-14. The age of this wood sample is approximately

• 2,800 years

• 5,700 years

• 11,400 years

• 17,100 years

Tags

NGSS.HS-PS1-8

Each of the objects below has different amounts remaining of the original radioactive material X. Which object is most likely the oldest?

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Which graph best shows the radioactive decay of carbon-14?

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Tags

NGSS.HS-PS1-8

According to the graph, what is the half-life of this isotope?

• 100 years

• 150 years

• 200 years

• 300 years

Tags

NGSS.HS-PS1-8

The theory that explains the formation of the solar system is called ____.

• Nebulis Theory

• Nebular Theory

• Big Bang Theory

• Big Nebulan Theory

Tags

NGSS.MS-ESS1-2

What is the nebular hypothesis?

• Prediction about how the universe was formed

• Prediction of how the moon was formed

• Prediction of how comets were formed

• Prediction of how the Solar System was formed

What do scientists think the two factors are that caused the inner and outer planets to be made up of, or to be composed, of different things?

• the differences in temperature and the force of the solar wind.

• the differences in size and stars

• the differences in speed and time

From one full moon to the next full moon, it take _______ days. (this a lunar month)

• 10

• 15

• 29.5

• 99

Tags

NGSS.MS-ESS1-1