p1Energy

Question 1

what is the unit of power

Answer 1

watts / w

Question 2

what is the defention of power

Answer 2

the rate at wich energy is transferd

Question 3

give examples of chemical energy

Answer 3

food
battrey
fuel

Question 4

state the law of energy conversation

Answer 4

energy can not be crated or desteroyed

Question 5

state any changes in the total energy of a ball is kicked assuming there is no extreme forces

Answer 5

the nergy remains constant due to the conversation of energy

Question 6

what is waste energy

Answer 6

the energy that is not used by the diveice

Question 7

state a eqattion to calculate effeciancy

Answer 7

usefull power output/total power output

Question 8

how can the effficancy of a system be increased

Answer 8

reducing waste output

Question 9

what is a renewable energy sorce

Answer 9

a energy sorce wich can be replensished

Question 10

give a example of renewable energy sorce

Answer 10

wind energy

Question 11

give an example of NON reneweble energy sorce

Answer 11

fossil fuerls

Question 12

what are the advantagexplain the eneviromental impacts es of generating power using gas rather then coal

Answer 12

flexeblie generation

Question 13

state a disatvantage of using renewable energy

Answer 13

output

Question 14

explain the environmental impacts of burning fossil fiels

Answer 14

carbon dioxide

Question 15

state a advantage of fossil fuels as energy recorce

Answer 15

realable

Question 16

state a advantage of nuclear power

Answer 16

dose not relase green house gasses

Question 17

state a disadvantage of nuclear power

Answer 17

produces nucler waste

Question 18

how do hydroelectric power reduce energy

Answer 18

the turban turns a generator

Question 19

what are disadvantages of using hydro electric power

Answer 19

it can cost a lot

Question 20

what ae some advantages of solar panels

Answer 20

they don’t cause harm to environment