ENERGY

Question 1

Energy transfers

Answer 1

-mechanically
-electrically
-by heating
-by radiation

Question 2

Energy stores

Answer 2

-gravitational potential
-thermal
-kinetic
-elastic
-magnetic
-chemical
-electrostatic
-nuclear

Question 3

Principle of the conservation of energy

Answer 3

Energy can never be created or destroyed, only transferred

Question 4

White, light, shiny surfaces are…

Answer 4

POOR absorbers of IR
GOOD reflectors of IR
POOR radiator of IR

Question 5

Matte, black, dark surfaces are…

Answer 5

GOOD absorbers of IR
POOR reflectors of IR
GOOD radiators of IR

Question 6

Energy transfer: HYDROELECTRIC POWER

Answer 6

Gravitational potential energy stored in water in high reservoirs
Is transferred to KINETIC ENERGY,
As water flows down mountain
Water mechanically turns a turbine
Transfers energy to the KINETIC STORE of the turbine
Then to the KINETIC STORE of the generator
Transferred ELECTRICALLY tot eh national grid

Question 7

Energy transfer: TIDAL + WAVE

Answer 7

Energy in the KINETIC STORE in the flowing water
Is transferred to the KINETIC STORE of the turbines
Then the KINETIC STORE off the generator
Which is transferred electrically to the national grid

Question 8

Energy transfer: fossil fuels

Answer 8

Energy in the CHEMICAL STORE of the fuels
Is transferred tot eh THERMAL STORE of water
Which is transferred to teh KINETIC store of the turbine
And then the KINETIC STORE of the generator
Transfers ELECTRICALLY to the national grid