Radioactivity

What do you already know about radioactivity?

What would you like to learn from our Nuclear & Radioactivity unit?

Which groups of particles make up an alpha particle?

• two electrons

• two protons

• two neutrons

• no electrons, protons, or neutrons

How can nuclear radiation be detected?

• Geiger counters

• home radiation detectors

• masks with filters

• film badges

Which type of radiation is blocked by plastic or aluminum?

• Gamma

• Alpha

• Beta

A(n) _____ is a penetrating ray of energy emitted by an unstable nucleus.

• alpha particle

• gamma ray

• beta particle

• delta particle

All matter is made of _________.

• energy 
• atoms 
• electrons 
• compounds 

The problem nuclear

semioticians face is that they must explain_________

• the benefits of radiation

• warn of nuclear waste to the future

• warn of nuclear war to the future

• describe our destruction

What is the atomic number of this isotope?

• 131

• 53

• 184

• 78

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

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