Radioactive Decay

The nucleus is held together by the ___________________________force.

• The Strong Nuclear Force

• The Weak Nuclear Force

• Electromagnetism

• Gravity

Select all that are uses for radioactive materials.

• glow in the dark paint for clocks

• smoke detectors

• nuclear power

• nuclear bomb

Which type of nuclear radiation can be stopped by a sheet of paper?

• Alpha

• Beta

• Gamma

What makes something radioactive?

• elements with an atomic number above 81
• an unstable nucleus
• contaminated sewage
• It decays over time

_______________ is the process by which unstable atoms emit radiation until they become stable.

• Radiation
• Chemical Reaction
• Radioactive Decay
• Isotopes

Where does radioactivity have application in our lives?

• Medicine
• Energy (electricity)
• Agriculture
• All of the above

The rate at which a radioactive element decays is its ____.

• quarter life
• whole life
• wonderful life 
• half life

Isotopes have the same ____________

• Mass number

• Number of electrons

• Number of neutrons

• All of these

^{The photo above shows the isotopic notation for which isotope?}

• Carbon 12
• Carbon 13
• Carbon 14
• Carbon 15

What is a half-life?

• The average time it takes for any element to disappear completely

• The time it takes for half of any number of radioactive atoms to decay

• The time it takes for a radioactive atom to lose half its neutrons

• The time it takes for a radioactive atom to lose half its electrons