Fission

_________ happens naturally due to an unstable nucleus.

• fission
• fusion
• radioactive decay
• K-capture

Nuclear power uses ____ for fuel.

• steel
• coal
• uranium
• hydrogen

The splitting of a nucleus into smaller nuclei is

• fusion
• fission
• decay
• gamma radiation

What is a chain reaction?

• When electrons are emitted causing electricity
• When a nuclear fission reaction occurs, the protons emitted can strike other nuclei in the sample, and cause them to split
• When a nuclear fission reaction occurs, the neutrons emitted can strike other nuclei in the sample, and cause them to split
• When a nuclear fission reaction occurs, the electrons emitted can strike other nuclei in the sample, and cause them to split

An example of an uncontrolled fission reaction is _______________

• Nuclear power plants
• Radio active decay
• Atomic Bomb
• On the surface of the sun

Where does fusion occur naturally?

• Underwater
• All around us
• In the radioactive waste
• On the sun

What do  control rods do in a nuclear reactor?

• Regulate the rate of reaction  by absorbing and slowing neutrons
• Produce electricity
• Produce neutrons to increase the rate of reaction
• Reduce heat produced by the uranium rods

Nuclear energy uses _____ to turn turbines to power a generator.

• wind
• water
• steam
• solar

One disadvantage of nuclear energy is ___.

• it is a fossil fuel
• it leaves behind radioactive waste
• it emits large amounts of pollution into the atmosphere
• there are no disadvantages

Isotopes of the same element have different ____________. 

•  numbers of protons  
• numbers of electrons
•  symbols 
• numbers of neutrons