MRC Physics

What is the unit for Force?

• Kilojoules

• Newtons

• Joules

• Metres

What is the unit for Energy?

• Metres

• Newtons

• Joules

• Kilometres

What is the best description of Gravitational potential Energy?

• The energy an object has when it is held above the surface of the Earth

• The value of the acceleration due to gravity

• The rate of change of distance with time

• The energy a twisted elastic band has

What is the Electromagnetic Spectrum?

• The waves

• The range of electromagnetic frequencies and wavelengths of sound

• The range of electromagnetic frequencies and wavelengths of light

• The vibrating particles

Why does double glazing a house reduce the heating and/or cooling costs?

• It reduces the amount of heat lost through convection

• It increases the amount of heat lost through convection

• It increases the amount of heat lost through conduction and radiation

• It reduces the amount of heat that is lost or enters through conduction and radiation

What are the 3 methods of heat transfer?

• Conduction, concentration, radiation

• Conduction, convection, radiation

• Conduction, convection, rancidation

• Contraption, convection, radiation

What is visible light?

• The portion of the electromagnetic spectrum that is visible to the human eye between 200 and 810nm wavelengths

• The portion of the electromagnetic spectrum that is not visible to the human eye between 490 and 710nm wavelengths

• The portion of the electromagnetic spectrum that is visible to the human eye between 490 and 710nm wavelengths

• The portion of the electromagnetic spectrum that is not visible to the human eye between 200 and 810nm wavelengths

Select ALL the responses that are correct about potential/stored energy.

• Can have forms of: chemical, elastic and gravitational

• Is measured in Joules

• Involves kinetic and nuclear energy

• Can be influenced by Gravity

Select all the CORRECT statements about Kinetic Energy.

• Kinetic energy is the energy of motion and is measured in Joules

• Kinetic energy is potential energy

• Kinetic energy is the energy of motion and is measured in Newtons

• An object moving at 2m/s has less Kinetic Energy than one moving at 5m/s

What is the Law of Conservation of Energy?

• The total amount of energy remains constant in a system. Energy can neither be created nor destroyed

• The total amount of energy changes in a system and some id permanently lost to the atmosphere

• The toatl amount of energy in a system is always 100J

• The total amount of energy remains constant in a system. Energy can neither be created nor destroyed, but can be change from one form to another