energy

Question 1

true/false
humans do not respire

Answer 1

false

Question 2

true/false
plants only photosynthesize

Answer 2

false
plants carry out both processes

Question 3

photosynthesis
CO2 + water –(w/ sunlight)–>____ + O2

Answer 3

glucose

Question 4

respiration
glucose + oxygen —>____ + carbon dioxide +water

Answer 4

energy

Question 5

what is the stored version of sugar

Answer 5

starch

Question 6

true/false
energy is never created or destroyed

Answer 6

true
it is always transferred to other forms

Question 7

list potential energy

Answer 7

chemical potential energy, gravitational potential energy, elastic potential energy

Question 8

list kinetic energy

Answer 8

electrical energy, sound energy, light energy, heat energy

Question 9

what affects the amount of gravitational potential energy

Answer 9

• height from ground
• its mass

Question 10

state the energy conversion when a battery is used in a closed circuit with a bulb

Answer 10

chemical potential energy–> electrical energy –> light energy + heat energy

Question 11

state the energy conversion when switching on the television

Answer 11

electrical energy –> sound energy + light energy + heat energy

Question 12

true/false
fossil fuels can be replenished

Answer 12

false
fossil fuels are non-renewable, limited natural resources

Question 13

y r wind turbines, hydroelectric power plants better than fossil fuels

Answer 13

they r renewable sources of energy unlike fossil fuels

Question 14

what causes global warming

Answer 14

deforestation and burning of fossil fuels

Question 15

list all types of energy

Answer 15

heat energy, sound energy, gravitational potential energy, kinetic energy, elastic potential energy, chemical potential energy, light energy

Question 16

what affects GPE

Answer 16

height from the floor and mass