NUCLEAR ENERGY

The mass which is lost during the decay is called the

• mass

• effective mass

• mass defect

• mass of proton

Tags

NGSS.HS-PS1-8

Nuclear energy is

• the energy obtained from the total mass during a radioactive decay

• the energy obtained from the mass defect during an isotope making

• the energy obtained from the total mass during a fusion reaction

• the energy obtained from the mass defect during a radioactive decay

Tags

NGSS.HS-PS1-8

Which is incorrect?

• E = energy released (J)

• m = mass defect (kg)

• m = total mass (kg)

• c = speed of light

Tags

NGSS.HS-PS1-8

Nuclear Fission

• is a process of splitting a heavy nucleus into two lighter nuclei. Accompanied with the release of enormous amount of energy from the mass defect

• is a self-sustaining reaction in which the products of the reaction can initiate another similar reaction. Accompanied with the release of enormous amount of energy from the mass defect

• is a process of combination of two lighter nuclei to form a heavier nuclei. Accompanied with the release of enormous amount of energy from the mass defect

Tags

NGSS.HS-PS1-8

This is a

• chain reaction

• nuclear fusion reaction

• nuclear fission reaction

• atomic mass defect reaction

Tags

NGSS.HS-PS1-8

NGSS.HS-ESS1-1

Radium-226 undergoes alpha decay to become radon-222. The equation is :

226 Ra 222 Rn + 4 He.

88 86 2

Calculate the energy released if

Ra-226 = 226.025406 u

Rn-222 = 222.017574 u

He = 4.002603 u

• 7.81 x 10 ^{- 11} J

• 7.81 x 10 ^{- 12} J

• 7.81 x 10 ^{- 13} J

• 7.81 x 10 ^{- 14} J

Tags

NGSS.HS-PS1-8

What is the name of the parts coloured green in the diagram?

• Boron control rods

• Uranium fuel rods

• Graphite core

• Coil and magnet

Based on the diagram state the energy change in a nuclear reactor

• nuclear energy --> heat energy --> electrical energy

• nuclear energy --> heat energy --> kinetic energy --> electrical energy

• heat energy -->nuclear energy --> kinetic energy --> electrical energy

• heat energy -->nuclear energy --> heat energy --> kinetic energy --> electrical energy

What is the problem if nuclear reactor is used to produce energy?

• only a little radioactive substance is required to release enormous amount of energy

• no harmful gases released like CO2, CO and SO2

• pollution if radiation is released to atmosphere

• low cost for maintenance

Below are steps for safety precautions when handling radioactive substance except

• wear Safety badge

• Safety clothing like gloves, lab coats

• wear earplug

• use thong