P2 Exam Questions

1. Must be able to describe that unbalanced forces produce acceleration2. Difference between velocity and speed3. Be able to calculate force (F=ma)4. Calculating weight5. What is meant by braking distance6. What is meant by thinking distance7. Factors affecting Stopping distances8. Calculation of work done 9. What is a regenerative braking system in a hybrid car?10. Why are they useful?11. Using distance time graphs to find speed (and maximum/minimum speed from gradient calculation)12. Be able to describe that action and reaction forces are the same13. Calculation of GPE14. Converting GPE in KE 15. Work done against friction is wasted as heat which is transferred to the surroundings16. Calculating speed from KE equation17. Finding acceleration and distance from velocity-time graphs18. Why things become statically charged and forces between charged objects19. Reading graphs20. Hooke’s Law21. Finding Resistance from a graph and data22. Drawing circuits (measuring current and pd – resistance of ammeters and voltmeters) and why we need to

include a variable resistor23. Define electric current24. Define potential difference25. Circuit symbols for thermistor, LDR, diode, variable resistor26. How resistance changes with temperature and light27. Explanation of filament bulb IV graph28. Calculation of electrical power29. Using graphs to find data to calculate power30. Plumb pudding v Rutherford model31. Sources or background radiation32. Comparing dose and exposure from data given33. Nuclear notation and reactions34. Half-life from a graph35. Comparison of light bulbs using data36. Life cycle of star37. Energy transfers38. Fuel in nuclear reactors39. What is absorbed by the Uranium nucleus in nuclear fission?40. How nuclear power generators work41. What control rods do42. Nuclear fusion and where it happens naturally43. How elements are formed in stars and scattered across the universe from supernovae44. What does conservation of momentum mean?45. Calculate velocity from conservation of momentum46. Structure of electrical power leads47. Definition of AC and DC48. Calculation of frequency of AC (and that it is 50Hz in the UK)49. Comparison of RCCB to a fuse50. Calculation of charge from charge=currentxtime

4-6 mark questions may be on:

Life cycle of a starModel of the atomcomparison and evaluation of different light bulbsterminal velocity of vehicles and skydiversExplain why seat belts/crumple zones/seat belts make cars safer ad limit injuries

P2 Exam Questions

1. Must be able to describe that unbalanced forces produce accelerationWhat do the arrows represent? Describe the motion of this car:

2. Be able to calculate acceleration (acceleration equation)A car is travelling at 10 m/s and accelerates to 25m/s in 5 seconds. Choose the correct equation and calculate the acceleration.

3. Difference between velocity and speedDefine velocity and speed

4. Be able to calculate force (F=ma)If the mass of the car in question 2 is 1200kg what driving force is necessary to accelerate it.

5. Calculating weightGravity = 10m/s2

What is the weight of an object of 20kg?

6. What is meant by braking distance

7. What is meant by thinking distance

8. Factors affecting Stopping distances

9. Calculation of work done

The force from the brakes on a car convert kinetic energy into ___________?The force on a car is 12kN and it stops in 5 metres. What is the work done by the brakes?

10. What is a regenerative braking system in a hybrid car?

11. Why are they useful?

12. Using distance time graphs to find speed (and maximum/minimum speed from gradient calculation)

What is the speed between 0 and 5 seconds?

Is this different from the speed between 5 and 6 seconds?

On the return journey the speed isn’t constant. At what time between 11 to 18 seconds is the speed the least?

13. Be able to describe that action and reaction forces are the same

A car travels at a constant speed. The tyres cause a traction force of 50 N. What is the size of the frictional force? Explain.

14. Calculation of GPEGravity = 10m/s2

A book of 0.5kg is raised 2 metres. What is the gravitational potential energy of the book?

15. Converting GPE in KE The book falls to the ground. How much kinetic energy does it have just before it hits the floor?

16. Work done against friction is wasted as heat which is transferred to the surroundingsA cyclist loses ___________ as they travel down a hill and gains ___________. As they apply the brakes this energy is changes into _____________ as the bike stops.

17. Calculating speed from KE equationKE of a ball of mass 2kg is 100J. What speed is it travelling at?

18. Finding acceleration and distance from velocity-time graphs

What is the acceleration from 0-4 seconds?

What distance has been travelled from A to C?

19. Why things become statically charged and forces between charged objects

Explain why a balloon gets statically charged when it is rubbed on somebody’s hair.

Why does a balloon that is charged up stick to a wall?

What would happen if you brought 2 balloons that are charged up in a similar way together?

20. Hooke’s LawDefine Hooke’s Law

Find the spring constant from the graph.

The elastic limit isn’t shown on the graph. What is meant by the elastic limit and what would happen to the shape of the graph if the spring is extended beyond it?

21. Finding Resistance from a graph and data

Use calculations to show how the resistance of a bulb vary with increased potential difference.

22. Explain the shape of the graph

23. Drawing circuits (measuring current and pd – resistance of ammeters and voltmeters) and why we need to include a variable resistorDraw a circuit that could be used to investigate the changing resistance of a bulb. Include a variable resistor in your circuit and explain why it is important.

24. Define electric current

25. Calculation of charge If a current of 2.5A flows through a resistor is a minute how much charge has passed through it?

26. Define potential difference

27. Circuit symbols for thermistor, LDR, diode, variable resistor

28. How resistance changes with temperature and lightDraw a sketch graph of resistance (y axis) and temperature (x-axis) for a thermistor

Draw a sketch graph of resistance (y axis) and light intensity (x-axis) for an LDR

29. Calculation of electrical powerA filament lamp has a current of 3A and a potential difference of 12V across it. What is the power of the lamp?

30. Using graphs to find data to calculate powerA student does an experiment and gets the following results of varying potential difference and current for a bulb.

Use the graph to find the power of the bulb at 3.5A

31. Sources or background radiationState sources of background radiation. Sort them into natural and manmade sources.

32. Comparing dose and exposure from data given

The chart shows the dosage from different types of radiation.On the left it shows that the radiation dose from flying to LA from New York is 40 Micro Sievert. On the right you can see that the recommended yearly limit for a member of the public is 1000 Micro Sievert. Explain whether you think it is safe for an airline pilot to fly 13 return flights from LA to New York.

33. Nuclear notation and reactionsExplain what A, Z and X mean below:

34. Half-life from a graphFind the half-life of carbon 14 from the graph below. Show how you have found it.

35. Comparison of light bulbs using data

(6 mark)

36. Life cycle of starDescribe the birth, life and death of a massive star.Compare how this is different to how the Sun will die.(6 mark)

37. Energy transfers in a power stationHow do nuclear power generators work?Describe the energy transfers in a nuclear power station.

38. What is the fuel in nuclear reactors?

39. What is absorbed by the Uranium nucleus in nuclear fission?

40. What do control rods do?

41. Define Nuclear fusion and describe where it happens naturally

42. How are elements formed in stars?

43. Explain how elements heavier that iron are made and scattered across the universe

44. What does conservation of momentum mean?

45. Calculate velocity from conservation of momentum

2 stationary ice skaters push away from each other.

How much momentum is there in total before they push away from each other?

How much is there afterwards?

One moves to the right with a velocity of 4m/s and the other moves away to the left. The one on the right has a mass of 30kg and the one on the left has a mass of 50kg, what is their velocity? Draw a diagram if this helps.

46. Structure of electrical power leadsThere are 3 wires in an electrical lead, what are they, what is each ones’ job and what colour are they?

47. Define of AC and DC and sketch what they would look like on a CRO screen.

48. Calculation of frequency of AC.If the time base is set to 5ms what is the frequency of the alternating current below. Is this what you would expect?

49. Compare the way an RCCB works to a fuse and explain the advantages

4-6 mark questions may be on:

Life cycle of a starModel of the atom (Plumb pudding v Rutherford modelcomparison and evaluation of different light bulbsterminal velocity of vehicles and skydiversExplain why seat belts/crumple zones/seat belts make cars safer ad limit injuriescomparison of RCCB and fuses

Working scientifically skills:

Working scientifically skills:

1. Must be able to describe graphs2. Must be able to use data from tables, graphs and diagrams in calculations and conclusions3. Must be able to describe how to improve practical investigations4. Must be able to use data to suggest if there is evidence that microwaves are harmful or not

(comprehension and interpretation of data)5. Must be able to use information given to you and make evaluations and comparisons based

on this information