Radiation, Half-Life, and Nuclear Fission/fusion

The most dangerous type of radioactive decay.

• beta

• gamma

• alpha

Tags

NGSS.HS-PS1-8

To test for radioactivity in an area, this device is used which beeps every time it detects radiation.

• film badge

• lead shield

• Geiger counter

• smoke detector

Tags

NGSS.HS-PS1-8

Beta decay is blocked by

• paper

• clothes

• aluminium foil

• skin

Tags

NGSS.HS-PS1-8

Which type of decay is shown in the equation?

• gamma

• alpha

• beta

Tags

NGSS.HS-PS1-8

Which type of decay releases ONLY energy and does NOT release particles?

• gamma

• alpha

• beta

Tags

NGSS.HS-PS1-8

Half-life is the amount of _____ it takes for half of a radioactive sample to decay.

• percent

• half

• time

• nuclei

Tags

NGSS.HS-PS1-8

What does fusion and fission have in common?

• Releases A LOT of energy from LITTLE amounts of matter

• creates a chain reaction

• used in nuclear power plants

• two smaller atoms form one slightly larger atom

Tags

NGSS.HS-PS1-8

The half-life of Polonium-210 is 138.4 days.  How many milligrams (mg) of polonium-210 will remain after 415.2 days if you start with 2 mg of the isotope?

• 415.2 days

• 0.25 days

• 412.2 mg

• 0.25 mg

Which is the symbol for gamma decay?

• 
• 
• 

Tags

NGSS.HS-PS1-8

Alpha decay is

• negatively charged

• positively charged

• least dangerous

• most dangerous

Tags

NGSS.HS-PS1-8