Physics
Physics, 06.03.2021 09:00, RainbowPieWasHere

Which would be the most appropriate description of how energy is distributed when a torch is turned on? A70% light energy, 30% thermal energy
B70% thermal energy, 30% electrical energy
C65% light energy, 30% thermal energy
D40% thermal energy, 55% light energy

1)Which of the following is a form of kinetic energy?
AMotion
BChemical
CElastic
DNuclear

2)The energy we receive from the sun includes:
Aelectrical and sound energy.
Bthermal and nuclear energy.
Celectrical and light energy.
Dthermal and light energy.

3)The petrol needed to make a car move is a form of:
Akinetic energy.
Bchemical potential energy.
Cthermal (heat) energy.
Delastic potential energy.
Egravitational potential energy.

4)When a bicycle skids to a stop, its kinetic energy is mostly transformed into:
Aheat and sound.
Bpotential energy.
Csound energy.
Dheat and light.

5)The faster an object moves:
Athe more potential energy it has.
Bthe more kinetic energy it has.
Cthe faster its particles vibrate.
Dthe cooler it gets.

6)When you clap your hands, the kinetic energy is transformed into:
Aheat and light.
Bheat and potential energy.
Csound and heat.
Dsound and elastic potential energy.

7)When you place a metal saucepan on the heating element of a stove, heat is transferred from the element to the saucepan by:
Areflection.
Bconvection.
Cconduction.
Dradiation.

8)Which of the following can be described as being luminous :
AStreetlights (turned on)
BA road sign
CThe moon
DWater

9)In the burning of fireworks during New Year displays, chemical potential energy is converted into:
Aheat, light and sound energy.
Blight and sound energy.
Csound and heat energy.
Dgravitational potential energy and light.

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Answers: 3

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