Have an account?
Skip to Content
Build your own quiz
Suggestions for you
34 questions
Show Answers
See Preview
- 1. Multiple Choice
Equation for kinetic energy
- 2. Multiple Choice
Equation for gravitational potential energy (GPE)
- 3. Multiple ChoiceLink between force, work done and distancework done = force x distancework done = distance / forcework done = force / distancework done = force x workwork done = force / work
- 4. Multiple Choice
Link between energy transferred and work done
energy transferred = work done
energy transferrred = 1/2 work done
energy transferred = work done2
energy transferred = 1 / work done
energy transferred = 4/3 π x work done3
- 5. Multiple ChoiceEfficiency equationefficiency = useful output / total inputefficiency = total output / total inputefficiency = total input / total outputefficiency = total input / useful outputefficiency = useful output / useful input
- 6. Multiple Choice
The unit of work is
watt
hertz
joule
pascal
- 7. Multiple Choice
Each of the boxes shown is pulled for 10 m across a level, frictionless floor by the force given. Which box experiences the greatest change in its kinetic energy?
A
B
C
D
E
- 8. Multiple Choice
Starting from rest, a marble first rolls down a steeper hill, then down a less steep hill of the same height. Ignoring friction, for which is it going faster at the bottom?
Faster at the bottom of the steeper hill
Faster at the bottom of the less steep hill
Same speed at the bottom of both hills
Can’t say without knowing the mass of the marble
- 9. Multiple Choice
Four students run up the stairs in the time shown. Which student has the largest power output?
A
B
C
D
- 10. Multiple Choice
A major league pitcher can throw a baseball with a kinetic energy of 150 J. How much work must the pitcher do to the ball to give it that much KE?
150 J
0
Can’t tell without knowing the mass of the ball
- 11. Multiple Choice
A rock has 10 J of potential energy on top of a roof. If it is dropped and lands with only 8 joules of kinetic energy, how much work did air resistance do on the rock?
-18 J
-10 J
-8 J
-2 J
- 12. Multiple Choice
In the equation PE = mgh, what does the “g” mean?
Acceleration due to gravity
Force of gravity
Weight of the object
- 13. Multiple Choice
What is the unit for power?
what
watt
joule
Jewel-Osco
- 14. Multiple Choice
Which requires more work – a person walking up stairs or a person running up stairs?
walking
running
they require equal work
no work is required for either because the movement is vertical
- 15. Multiple Choice
Which requires more power – a person walking up stairs or a person running up stairs?
walking
running
they require equal power output
no power is required at all
- 16. Multiple Choice
How much work is done on a 200-kg crate that is hoisted 2 m in a time of 4 s?
400 J
1000 J
1600 J
4000 J
- 17. Multiple Choice
How much power is required to raise a 200-kg crate a vertical distance of 2 m in a time of 4 s?
400 W
1000 W
1600 W
4000 W
- 18. Multiple Choice
A
B
C
D
- 19. Multiple Choice
A
B
C
D
- 20. Multiple Choice
A
B
C
D
- 21. Multiple Choice
A
B
C
D
- 22. Multiple Choice
Electricity can be obtained from different energy resources. Which energy resource is used to obtain electricity without producing heat to boil water?
coal
geothermal
hydroelectric
nuclear
- 23. Multiple Choice
If the mass of the cart is 15kg, how much is the potential energy of the cart?
0J
1.2J
6J
58.8J
- 24. Multiple Choice
What are fossil fuels?
energy producers that comes from radioactive elements
a natural product that can be changed into other energy forms to do work
energy resources that formed from buried plants and animals that lived a very long time ago
resources that are replaced faster than they are used
- 25. Multiple Choice
All of the following are fossil fuels EXCEPT
oil
water
coal
natural gas
- 26. Multiple Choice
Where does nuclear energy come from?
Electric generators
radioactive elements
fossil fuels
geothermal energy
- 27. Multiple Choice
Which of these originally got their energy from the sun? Choose all that are correct.
Coal
Nuclear power
Tidal
Wave
HEP
- 28. Multiple Choice
Which of these energy resources is the most reliable?
Coal power
Solar
Wave
Wind
- 29. Multiple Choice
The law of conservation of energy states:
Choose 2
Energy cannot be created or destroyed
Only transformed from one type to another
Energy can be created but not destroyed
Energy cannot be transformed
- 30. Multiple Choice
I throw my pen vertically up with 15J of kinetic energy. How much gravitational potential energy does it have at the top?
Assume no air resistance.
0J
15J
0 - 15J
Impossible to calculate
- 31. Multiple ChoiceWhat is the equation for calculating power?distance / timework x timework / timeforce x distance
- 32. Multiple Choice
Which of these is the best answer to "state a disadvantage of coal energy"?
Makes pollution
Produces carbon dioxide which causes global warming
Ugly to look at
Expensive to run, lots of jobs
- 33. Multiple Choice
Is "expensive" enough detail for an answer?
No - be specific
Yes - give me the mark
- 34. Multiple Choice
Around Tongariro, there is a large HEP network that produces 4% of NZ's electricity.
Which of these are disadvantages of using HEP?
Causes land to be flooded
Can affect river levels and wildlife on rivers e.g. Whio ducks
Expensive
Ugly
Produces carbon dioxide
- Answer choicesTagsAnswer choicesTags