energy resources and energy traansfers

Question 1

energy stores (8)

Answer 1

• chemical
• kinetic
• gravitational
• elastic
• thermal
• magnetic
• electrostatic
• nuclear

Question 2

energy can be transferred in 4 ways

Answer 2

• mechanically
• electrically
• by heating
• by radiation

Question 3

efficiency calculation when useful energy output and total energy input is involved.

Answer 3

efficiency = useful energy output/ total energy input x 100 percent

Question 4

Sankey diagrams

Answer 4

represent transfer of input and output energy

Question 5

conductors

Answer 5

thermal energy in solids and liquids can be transferred by vibration of particles

Question 6

convection

Answer 6

thermal energy in fluids (liquids and gas)

Question 7

black bodies that are dull

Answer 7

absorb and emit radiation

Question 8

white shiny bodies

Answer 8

best reflect radiation

Question 9

calculation when work is done when a force moves something through a distance?

Answer 9

work done = force x distance

Question 10

link between kinetic energy, mass and speed squared

Answer 10

kinetic energy = 1/2 x mass x speed square

Question 11

power is

Answer 11

the rate at which energy is transferred or rate at which work is done

Question 12

the rate at which energy is transferred or the rate at which work is done is defined as …

Answer 12

power

Question 13

calculation of power when time taken and work done are involved?

Answer 13

power = work done/ time taken

Question 14

renewable energy which can be replenished (4)

Answer 14

• wind
• water
• geothermal
• solar

Question 15

non- renewable energy (2)

Answer 15

• fossil fuels
• nuclear power