Radioactivity

Where does radioactivity have application in our lives?

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

Tags

NGSS.HS-ESS3-2

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

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

Tags

NGSS.HS-PS1-8

In a nuclear reactor, electricity is produced from what element?

• Plutonium
• Uranium 235
• Radon 220
• Lead 232

Tags

NGSS.HS-PS1-8

The three types of nuclear radiation in order of decreasing penetrating power are

• alpha, beta, gamma

• alpha, gamma, beta

• beta, alpha, gamma

• gamma, alpha, beta

The process by which nuclei having small masses are united to form a single larger nucleus is called nuclear ____.

• fusion
• fission
• reactivity
• waste

Tags

NGSS.HS-PS1-8

If the half life of a radioactive element is 100yrs, how long would it take for the radioactivity to reduce by one half?

• 200yrs
• 100yrs
• 50yrs
• 300yrs

Tags

NGSS.HS-PS1-8

A certain radioactive sample has a half life of 2 years. After 6 years, how much of the sample is left?

• 1/2

• 1/3

• 1/16

• 1/8

Tags

NGSS.HS-PS1-8

An alpha particle is made up of

• 2 protons and 4 neutrons

• 1 proton and 1 neutron

• 2 protons and 2 neutrons

• 4 protons and 2 neutrons

A sample of Radium-228 decays from 100g to 12.5g. How many half lives did it experience?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS1-8

How much of a 250g sample would be left after 5 half lives?

• 125g

• 62.5g

• 31.25g

• 7.81g