17-19: A ball rolls down a slope and up the other side .

Where on the diagram does the ball...

 ball in bowl
17. have the least kinetic energy?
18. have the most potential energy?
19. have increasing kinetic and decreasing potential energy?

20-22: The questions are about energy resources.
Every source of power we use works in different ways and has advantages and disadvantages.

wind turbine

 
20. Which one only works in volcanic regions?
21. Which one of these is usually situated on a hill or at the coast?

22. How many of the energy resources listed below are classed as non-renewable?

  • Hydroelectric
  • Tidal
  • Oil
  • Wave
  • Coal
  • Nuclear
  • Solar
  • Geothermal
  • Wind
  • Gas

 

 

23. This is a house in Norway. Houses in cold countires need to be highly insulated with...

 House in Norway
  • A) thick walls with a high thermal conductivity
  • B) thin walls with a high thermal conductivity
  • C) thick walls with a low thermal conductivity
  • D) thin walls with a low thermal conductivity

24. A tennis ball of mass 100g is thrown at a speed of 8 m/s. It has a kinetic energy of:

  • A) 3.2 J
  • B) 6.4 J
  • C) 3200 J
  • D) 6400 J

 

25. Which of these is the correct formula for potential energy?

  • A) g.p.e. = mv
  • B) g.p.e. = Fd
  • C) g.p.e. = ma
  • D) g.p.e. = mgh

26-28. A 4kg brick is held 20m above the ground.

26. The potential energy of the brick is  .
27. When it is dropped it hits the ground with a kinetic energy of     (ignoring air friction).
28. The velocity on impact is    .