Nuclear Fission and Fusion

What was the purpose of Operation Castle?

• To study the behavior of nuclear particles
• To test the effects of nuclear radiation on the environment
• To develop a new type of nuclear reactor
• To validate the designs of different thermonuclear weapons

Tags

NGSS.HS-PS1-8

What is the process called when a larger nucleus breaks into two or more smaller nuclei?

• Alpha decay
• Fission
• Beta decay
• Fusion

Tags

NGSS.HS-PS1-8

What is the process called when two or more smaller nuclei join together to form a larger one?

• Fusion
• Beta decay
• Alpha decay
• Fission

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

What is half-life?

• The time required for a radioactive substance to become stable
• The time required for a radioactive substance to become unstable
• The time required for half of the atoms in any given quantity of a radioactive substance to decay
• The time required for all of the atoms in a radioactive substance to decay

Tags

NGSS.HS-PS1-8

What is the half-life of radium-226?

• 4.5 × 10^9 years
• 12.3 years
• 1600 years
• 5730 years

Tags

NGSS.HS-PS1-8

What is the half-life of polonium?

• 4.5 × 10^9 years
• 0.7 seconds
• 12.3 years
• 5730 years

Tags

NGSS.HS-PS1-8

What is the half-life of uranium?

• 0.7 seconds
• 4.5 × 10^9 years
• 5730 years
• 12.3 years

Tags

NGSS.HS-PS1-8

If the half-life of a substance is 10 years, how much of it will remain after 20 years?

• 50%
• 100%
• 25%
• 75%

Tags

NGSS.HS-PS1-8

If 4.00 grams of tritium (hydrogen-3) are produced in the lab, how much of it will remain after 12.3 years?

• 12.5%
• 6.25%
• 25%
• 50%

Tags

NGSS.HS-PS1-8

What is the equation for the fusion of a hydrogen-2 atom and a hydrogen-3 atom?

• H-2 + H-3 -> He-5
• H-2 + H-3 -> He-6
• H-2 + H-3 -> He-7
• H-2 + H-3 -> He-4

Tags

NGSS.HS-ESS1-3

NGSS.HS-PS1-8