Lesson 1: Formation of the Elements

Abbe Georges Edouard Lemaitre was famous for his work regarding the...

• big bang model

• cosmic background radiation

• Hubble's Law

• nuclear fusion

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NGSS.HS-ESS1-2

The first scientist to postulate the presence of electromagnetic radiation in the universe was ...

• Abbe Georges Edouard Lemaitre

• Edwin Hubble

• Fred Hoyle

• George Gamow

Penzias and Wilson confirmed the...

• expansion of universe

• nuclear fusion in stars

• big bang nucleosynthesis

• presence of cosmic microwave background

Which is not a product of primordial nucleosynthesis?

• Carbon -12

• Helium -4

• Hydrogen -2

• Lithium -7

What force holds the protons and neutrons together in a nucleus?

• attractive force

• repulsive force

• strong force

• weak force

Which of the following describes stellar nucleosynthesis?

• It produced the light elements.

• It occurred shortly after the big bang.

• It produced the hydrogen isotope, deuterium.

• It involved nuclear fusion and neutron capture.

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NGSS.HS-ESS1-3

NGSS.HS-PS1-8

In the CNO cycle, the catalyst is...

• Carbon

• Helium

• Hydrogen

• Silicon

Which of the following is likely to happen once the star has used up the hydrogen in its core?

• CNO cycle will stop

• Helium burning will stop

• Hydrogen burning will start

• Proton-proton chain will proceed

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NGSS.HS-ESS1-1

Which of the following reactions is most likely a source of oxygen in stars?

• carbon burning

• helium burning

• hydrogen burning

• silicon burning

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NGSS.HS-ESS1-3

NGSS.HS-ESS1-1

Which is not an observational evidence for the big bang model?

• big bang nucleosynthesis

• cosmic microwave background

• cosmic ray spallation

• Hubble expansion

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NGSS.HS-ESS1-2