energy

Question 1

name 7 renewable sources

Answer 1

1. solar 2. tidal 3. wave 4. wind 5. geothermal 6. hydroelectric 7. biofuel

Question 2

name 4 non-renewable sources

Answer 2

1. oil 2. coal 3. natural gas 4. nuclear

Question 3

name the energy stores (Most Garth Hill Kids Enjoy Energy Names Creatively)

Answer 3

1. magnetic 2. gravitational potential 3. heat (thermal) 4. kinetic 5. electrostatic 6. elastic 7. nuclear 8. chemical

Question 4

what is the equation for kinetic energy?

Answer 4

1/2 x mass x velocity ^2

Question 5

what is the equation for the elastic energy?

Answer 5

1/2 x spring constant x extension ^2

Question 6

what are the pathways for energy stores?

Answer 6

1. mechanical 2. by heating 3. electrical 4. by radiation

Question 7

conservation of energy?

Answer 7

energy cannot be created or destroyed it can only be transferred

Question 8

which energy stores are used for transport?

Answer 8

1. coal 2. nuclear 3. oil 4. natural gas 5. biofuel

Question 9

which energy stores are used for heating?

Answer 9

1. coal 2. natural gas 3. nuclear 4. oil 5. solar 6. geothermal 7. biofuel

Question 10

which energy stores are used for electricity?

Answer 10

1. coal 2. oil 3. natural gas 4. nuclear 5. wind 6. hydroelectric 7. waves 8. tidal 9. biofuel

Question 11

which energy stores have an advantage of being reliable?

Answer 11

1. coal 2. oil 3. natural gas 4. nuclear 5. geothermal 6. biofuel 7. tidal

Question 12

which energy stores have an advantage of being cheap to run?

Answer 12

1. coal 2. natural gas 3. oil 4. solar 5. geothermal 6. hydroelectric

Question 13

which energy stores have an advantage of being used everywhere?

Answer 13

1. coal 2. natural gas 3. nuclear 4. oil 5. solar 6. biofuel

Question 14

which energy stores have a disadvantage of being expensive to build?

Answer 14

1. nuclear 2. waves 3. tidal 4. geothermal 5. solar

Question 15

which energy stores have a disadvantage of emitting CO2?

Answer 15

1. coal 2. natural gas 3. oil 4. biofuel

Question 16

which energy stores have a disadvantage of damaging habitats?

Answer 16

1. tidal 2. hydroelectric 3. wind 4. solar

Question 17

what is the most common form of wasted energy?

Answer 17

thermal energy to surroundings

Question 18

how do you reduce wasted energy in housing?

Answer 18

using thermal insulation

Question 19

how do you reduce wasted energy in vehicles or projectiles?

Answer 19

streamlining

Question 20

how do you reduce wasted energy in moving parts?

Answer 20

lubrication and wheels

Question 21

what does insulation do?

Answer 21

reduces amount of thermal energy transferred

Question 22

what is mass measured in?

Answer 22

kg

Question 23

what is the unit of specific heat capacity?

Answer 23

J/kg^oC