Nuclear Physics

Of the main types of radiation emitted from naturally radioactive isotopes, which is the hardest to block?

• Alpha deca

• Gamma Decay

• Beta decay

• They are all blocked using the same method

Tags

NGSS.HS-PS1-8

What is emitted during Beta Radiation?

• A high-energy Electron.

• Protons.

• Neutrons.

• Nuclei

Tags

NGSS.HS-PS1-8

What is an alpha particle?

• high speed electron

• protons

• neutrons

• protons + 2 neutrons

Tags

NGSS.HS-PS1-8

Why does nuclear fusion require high pressures and temperatures?

• To provide enough energy to split the nucleus.

• The two nuclei are both negatively charged and repel each other.

• To lower the cost.

• To overcome the electromagnetic repulsion of the nuclei.

Tags

NGSS.HS-PS1-8

NGSS.HS-ESS1-1

What is the mass of an alpha particle?

• 1

• 2

• 3

• 4

Isotopes of the same element have different ____________. 

•  numbers of protons  

• numbers of electrons

•  symbols 

• numbers of neutrons

Tags

NGSS.HS-PS1-8

Complete the nuclear equation and determine the type of decay that is occurring in this reaction. 

• alpha

• beta

• gamma

• none

Tags

NGSS.HS-PS1-8

In what part of an atom can protons be found?

• inside the electron

• inside the neutron

• inside the atomic nucleus

• inside the electron shells

Tags

NGSS.HS-PS1-8

The half-life of strontium-90 is 25 years. How much strontium-90 will remain after 100 years if the initial amount is 4.0 g? What do we need to know to answer this question? (Check all that applies)

• the half-life for the given sample

• the number of half-lives passed based on the total time

• to multiply by 2

• if alpha decay occurs

Tags

NGSS.HS-PS1-8

If 20 mg of iodine-131 is given to a patient, how much is left after 32 days? The half-life of iodine-131 is 8 days.

• 32

• 1.25

• 10

• 2.5