Physics: Energy resources and energy transfer

katgads
Quiz by , created over 4 years ago

GCSE Physics Quiz on Physics: Energy resources and energy transfer, created by katgads on 12/15/2014.

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katgads
Created by katgads over 4 years ago
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Question 1

Question
Which of these are forms of energy waiting to be turned into one of the other forms? (Tick all that apply)
Answer
  • Thermal
  • Chemical potential
  • Gravitational potential
  • Kinetic
  • Electrical
  • Light
  • Elastic potential
  • Nuclear
  • Sound

Question 2

Question
What is the principle of the conservation of energy?
Answer
  • Energy can never be created or destroyed; it can only be converted from one form to another.
  • Energy can be created or destroyed; it can also be converted from one form to another.

Question 3

Question
A light bulb has a total energy input of 200J. 190J of this is wasted energy. Work out the energy efficiency.
Answer
  • 10%
  • 5%
  • 90%

Question 4

Question
Draw a Sankey diagram for a candle which wastes most of its energy as heat.

Question 5

Question
Describe the energy transfer in this picture.
Answer
  • kinetic ---> electrical
  • electrical ---> sound ---> light
  • gravitational potential ---> kinetic ---> electrical
  • gravitational potential ---> electrical ---> sound

Question 6

Question
Tick all of the true statements.
Answer
  • A device which transfers one form of energy into another is called a transducer.
  • Energy is normally wasted as heat and sound.
  • Wasted energy dissipates into the surroundings.
  • Dissipated energy cannot be re-used.

Question 7

Question
Which type of heat energy transfer only takes place in fluids and involves warmer, less dense regions of fluid moving upwards and being replaced by colder, sinking fluids?
Answer
  • Conduction
  • Convection
  • Radiation

Question 8

Question
All types of energy require particles to be transferred.
Answer
  • True
  • False

Question 9

Question
Which of these loses energy more quickly?
Answer
  • A bright, shiny surface
  • A dull, black surface

Question 10

Question
Which features of a vacuum flask prevent heat loss by conduction?
Answer
  • A thin vacuum between the walls
  • Silvered walls
  • Cork or plastic stopper

Question 11

Question
Find the work done by a car driving at a force of 500N 200m down a road.
Answer
  • 1000J
  • 5000J
  • 700J
  • 300J

Question 12

Question
What is power?
Answer
  • Power is the rate of doing work.
  • Power = work done x time taken
  • Power = work done/time taken

Question 13

Question
How fast does a stone weighing 4kg fall from a height of 200m?
Answer
  • 28 m/s
  • 800 m/s
  • 63 m/s