Nuclear Energy, Weapons and History

Energy is stored in the ___ of an atom.

• proton

• neutron

• electron cloud

• nucleus

What is an advantage  of nuclear energy?

• radioactive waste

• no pollution

• we will never run out

• it is the safest way to make energy

This is an example of

• Nuclear Fission

• Nuclear Fusion

• No reaction

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

Radioactive materials have unstable...

• electrons

• protons

• nuclei

• neutrons

Tags

NGSS.HS-PS1-8

Two atoms of the same element but with different mass numbers are called________

• electrons

• isotopes

• ions

• reaction partners

Has the symbol

• Alpha

• Beta 

• Gamma

The % of the parent isotope remaining after 1 Half Life.

• 50%

• 25%

• 12.5%

• 6.25%

The % of the parent isotope remaining after 2 Half Lives.

• 50%

• 25%

• 12.5%

• 6.25%

A nuclear fission reaction occurs when a uranium-235  atom is bombarded with a neutron. This reaction is used to produce energy in a nuclear power plant. Why is it not possible to carry out a nuclear fusion reaction in a nuclear reactor?

• A fusion reaction releases harmful rays
• A fusion reaction is difficult to control
• A fusion reaction requires extremely low temperature and pressure
• A fusion reaction requires extremely high temperature and pressure

What radioactive element is used in a nuclear reactor?

• enriched uranium 238

• enriched plutonium 239

• enriched uranium 235

• fissile hydrogen