OCR Combined Science A Papers 5 and 11 Automock

#1. What is the equation for kinetic energy?

KE = mass x speed x time²

KE = 2.5 x mass x speed²

1

KE = 1/2 x mass x speed²

#2. When two magnets are placed alongside each other – what is the best way to describe the shape of the magnetic field they produce?

erratic

uniform

2-dimentional

#3. Magnets can attract magnetic materials – true or false?

true

false

#4. What is the rate of acceleration in freefall?

#5. Determine the speed of the object between 1 and 3 seconds. ? answer to 2 decimal places

#6. Which scientist proposed the Plum Pudding Model?

JJ. Thomson

John Dalton

Ernest Rutherford

#7. What is this component?

#8. The melting point of gallium is 29.8˚C and the boiling point is 2204˚C. What state is gallium at 25˚C?

solid

liquid

gas

#9. Is time a vector or a scalar?

scalar

vector

#10. Why did Ernest Rutherford’s experiments with gold foil demonstrate that most of atoms consists of empty space?

Most of the atoms passed straight through the foil

Most of the particles were destroyed when they met protons in the nucleus

Most of the atoms were deflected or bounced back

#11. Is this statement true or false? As potential difference increases, the current across a component increases?

False

True

#12. How is kinetic energy stored?

Stored as movement

Stored in gravitational bonds between particles

Stored as increased mass

Stored as the potential to fall and become kinetic energy

#13. Using the equation F = MA – calculate the force of a ball with a mass of 15kg that is accelerated at 2m/s²?

360 Newtons

3 Newtons

30 Newtons

10 Newtons

#14. What is Newton’s Third Law of Motion?

F = MA

objects in motion stay in motion and objects at rest stay at rest

every action has an equal and opposite reaction

#15. What is this component?

#16. Which of the following describes the Plum Pudding Model of atomic structure?

A mass of positively charged material with negatively charged electrons distributed throughout it

A central nucleus containing protons and neutrons, surrounded by electrons at discrete energy levels (shells)

#17. The diagram shows a solenoid. Why is the magnetic field stronger along the centre of the coil than on the outside? ? Select two answers

Select all that apply:

The fields cancel out to give a weaker field on the outside

The fields of the outside are weaker due to the greater potential difference at the centre of the wires in the coil

The fields add together in the centre and become nearly uniform and strong

The fields on the inside are stronger due to the nanoelectric effects of electromagnetic induction

#18. Energy can be transferred to useful and non-useful forms. Which of the following are non-useful transfers of energy?

Select all that apply:

Movement created from a car engine

Noise created from a car engine

Heat created from a light bulb

Light created from a light bulb

#19. A crane raises a concrete bucket 12m into the air. The bucket including the cement weighs 850N. Calculate the work done. Answer to 1d.p and include the units. ? Do not include your workings in your answer

#20. Acceleration is an increase in the rate of what?

magnitude

gravitational potential energy

velocity

#21. What is the name of the phase change from gas to liquid?

condensation

freezing

melting

evaporation/boiling

sublimation

deposition

#22. What is this component?

#23. What is the force acting on a conductor carrying current at right angles to a magnetic field when: magnetic flux density = 0.005 T , current = 3 A and length of wire = 150m?

2.25 N

5 N

1.76 N

#24. Does a current flow if there is no source of potential difference?

No

Yes

#25. What is a resultant force?

Where forces are completely balanced

A positive or negative net force when forces in each direction are taken into account

A theoretical force that might exist but only in space

#26. Calculate the distance travelled by the runner in the velocity/time graph.

The area under the graph = distance travelled

Split the graph into triangles and rectangles and calculate the areas. Then add together the areas.

Area of a rectangle = Length x Height

Area of a triangle = 1/2 x Length x Height

90m 120m 180m = 390m

NOTE: the graph starts at one second and not 0. Don’t be fooled, look at the axes carefully before attempting a question.

Direction of magnetic field and current along a wire

#27. This diagram shows the direction of a magnetic field caused by a current flowing through a conductor. Where is the magnetic field strongest?

At an intermediate distance from the wire

Further from the wire

Closer to the wire

#28. True or False – Vector quantities only have magnitude?

False

True

#29. Why is the total energy transferred to a kettle’s heating element, more than the total energy of the boiled water inside the kettle?

The total energy transferred to the heating element is difficult to measure and we probably made a mistake

Energy is transferred from the heating element to the rest of the kettle and to the environment

The total energy of the water is less because a little bit of energy is destroyed each time it is moved between stores

If you could accurately measure the movement of energy, you would always find that all of the energy is transferred. Energy cannot be created or destroyed, this is known as the Law of Conservation of Energy.

#30. Is speed a vector or a scalar?

scalar

vector

#31. Does a circuit need to be closed for current to flow?

Yes

No

#32. What is the name of the phase change from liquid to solid?

deposition

freezing

condensation

melting

evaporation/boiling

sublimation

#33. Calculate the acceleration of an object which has the following characteristics. Use the following equation v² − u² = 2 a x. Final velocity = 50m/s, Initial velocity 0m/s, Distance travelled = 350m

3.57 m/s²

2.65 m/s²

1250 m/s²

25 m/s²

Rearrange the equation to the following and then substitute in the correct values:

a = v² – u²

2 x

Where:

a = acceleration

v² = final velocity squared

u² = initial velocity squared

x = distance

#34. During Ernest Rutherford’s experiments with gold foil, why did some of the particles bounce back?

Alpha particles behave in unpredictable ways and can randomly change direction due to quantum effects

Alpha particles are positively charged, they were deflected when they met the positively charged protons in the nucleus

He fired electrons at the gold foil and when they met protons they were reflected back

#35. Which of the following is the correct equation for work done?

E = F x d

E = F / d

F = d x E

#36. What state of matter has particles which are close together and move around each other?

gases

solids

liquids

#37. Magnesium is a magnetic material – true or false?

false

true

#38. Which of the following are uses for magnets?

Select all that apply:

checking food for excess radiation

electric motors

measuring the melting points of different liquids

generators

loudspeakers

confusing mice so they get lost in mazes

#39. Which of the following is the equation for acceleration?

F = MA

A=(v−u)/t

A = HF/t

E = MC²

#40. Which of the following was the Rutherford Model of atomic structure?

A central nucleus containing protons and neutrons, surrounded by electrons

A mass of positively charged material with negatively charged electrons distributed throughout it

#41. Conventional current goes from:

Positive terminal to negative terminal

Negative terminal to positive terminal

#42. What is acceleration?

Change in the rate of displacement

Increase in distance

Change in the rate of velocity

#43. Fill in the blank: A current flowing through a wire causes a ………. field.

#44. Kate and Emma both walk up 10 stairs, moving 4.5m higher than before. Emma does this in 2.7 seconds, Kate does this in 3.2 seconds. Which girl has exerted the most power?

Emma

Kate

#45. Find the volume of a silver block that has a mass of 159g and a density of 10.49 g/cm³. Give your answer in cm³ and to 1 decimal place.

#46. What is the name of the phase change from gas to solid?

melting

condensation

evaporation/boiling

deposition

freezing

sublimation

#47. What is this component?

#48. How is gravitational potential energy stored?

Stored as increased mass

Stored as movement

Stored as the potential to fall and become kinetic energy

Stored in gravitational bonds between particles

#49. What is a battery?

provides a constant resistance

two or more cells in a circuit

makes or breaks a circuit

#50. A coil of wire with current flowing through it is an electromagnet. What else do we call a coil of wire?

A solenoid

A theodolite

A caliper

#51. What is the name of the phase change from solid to liquid?

evaporation/boiling

deposition

freezing

sublimation

condensation

melting

#52. Complete the equation for power. Power (W) = work done (J) / ……..

time taken (s)

weight (N)

distance (m)

#53. What the the least dense state of matter?

solids

gases

Bose-Einstein Condensates

liquids

#54. What is the function of a diode?

provides variable resistance

gives power to a circuit

makes or breaks a circuit

measures current

releases light

two or more cells in a circuit

safety component which can break a faulty circuit

measures potential difference

allows current to only flow one way

provides a constant resistance

#55. If an object is moving in a circular path – what is happening to its velocity?

increasing over time

declining over time

constant

constantly changing

#56. What is this component?

#57. What is Newton’s Second Law of Motion?

F = MA

objects in motion stay in motion and objects at rest stay at rest

every action has an equal and opposite reaction

#58. With electromagnetism the direction of the current depends on which of the following?

The strength of the current

The direction of the current

The resistance of the wire x the current

#59. A student sets up a series circuit that has two filament lamps, a power source and a switch after the first lamp. Can the first lamp be turned off whilst keeping the second lamp on?

No

Yes

#60. An electric motor does 70,000 J of work in 200 s. Calculate the Power of this action. Include the units and answer to 1d.p ? Do not include your workings in your answer

GCSE OCR Combined Science A Papers 5 and 11

Results

#1. What is the equation for kinetic energy?

#2. When two magnets are placed alongside each other – what is the best way to describe the shape of the magnetic field they produce?

#3. Magnets can attract magnetic materials – true or false?

#4. What is the rate of acceleration in freefall?

#5. Determine the speed of the object between 1 and 3 seconds. ? answer to 2 decimal places

#6. Which scientist proposed the Plum Pudding Model?

#7. What is this component?

#8. The melting point of gallium is 29.8˚C and the boiling point is 2204˚C. What state is gallium at 25˚C?

#9. Is time a vector or a scalar?

#10. Why did Ernest Rutherford’s experiments with gold foil demonstrate that most of atoms consists of empty space?

#11. Is this statement true or false? As potential difference increases, the current across a component increases?

#12. How is kinetic energy stored?

#13. Using the equation F = MA – calculate the force of a ball with a mass of 15kg that is accelerated at 2m/s²?

#14. What is Newton’s Third Law of Motion?

#15. What is this component?

#16. Which of the following describes the Plum Pudding Model of atomic structure?

#17. The diagram shows a solenoid. Why is the magnetic field stronger along the centre of the coil than on the outside? ? Select two answers

#18. Energy can be transferred to useful and non-useful forms. Which of the following are non-useful transfers of energy?

#19. A crane raises a concrete bucket 12m into the air. The bucket including the cement weighs 850N. Calculate the work done. Answer to 1d.p and include the units. ? Do not include your workings in your answer

#20. Acceleration is an increase in the rate of what?

#21. What is the name of the phase change from gas to liquid?

#22. What is this component?

#23. What is the force acting on a conductor carrying current at right angles to a magnetic field when: magnetic flux density = 0.005 T , current = 3 A and length of wire = 150m?

#24. Does a current flow if there is no source of potential difference?

#25. What is a resultant force?

#26. Calculate the distance travelled by the runner in the velocity/time graph.

#27. This diagram shows the direction of a magnetic field caused by a current flowing through a conductor. Where is the magnetic field strongest?

#28. True or False – Vector quantities only have magnitude?

#29. Why is the total energy transferred to a kettle’s heating element, more than the total energy of the boiled water inside the kettle?

#30. Is speed a vector or a scalar?

#31. Does a circuit need to be closed for current to flow?

#32. What is the name of the phase change from liquid to solid?

#33. Calculate the acceleration of an object which has the following characteristics. Use the following equation v² − u² = 2 a x. Final velocity = 50m/s, Initial velocity 0m/s, Distance travelled = 350m

#34. During Ernest Rutherford’s experiments with gold foil, why did some of the particles bounce back?

#35. Which of the following is the correct equation for work done?

#36. What state of matter has particles which are close together and move around each other?

#37. Magnesium is a magnetic material – true or false?

#38. Which of the following are uses for magnets?

#39. Which of the following is the equation for acceleration?

#40. Which of the following was the Rutherford Model of atomic structure?

#41. Conventional current goes from:

#42. What is acceleration?

#43. Fill in the blank: A current flowing through a wire causes a ………. field.

#44. Kate and Emma both walk up 10 stairs, moving 4.5m higher than before. Emma does this in 2.7 seconds, Kate does this in 3.2 seconds. Which girl has exerted the most power?

#45. Find the volume of a silver block that has a mass of 159g and a density of 10.49 g/cm³. Give your answer in cm³ and to 1 decimal place.

#46. What is the name of the phase change from gas to solid?

#47. What is this component?

#48. How is gravitational potential energy stored?

#49. What is a battery?

#50. A coil of wire with current flowing through it is an electromagnet. What else do we call a coil of wire?

#51. What is the name of the phase change from solid to liquid?

#52. Complete the equation for power. Power (W) = work done (J) / ……..

#53. What the the least dense state of matter?

#54. What is the function of a diode?

#55. If an object is moving in a circular path – what is happening to its velocity?

#56. What is this component?

#57. What is Newton’s Second Law of Motion?

#58. With electromagnetism the direction of the current depends on which of the following?

#59. A student sets up a series circuit that has two filament lamps, a power source and a switch after the first lamp. Can the first lamp be turned off whilst keeping the second lamp on?

#60. An electric motor does 70,000 J of work in 200 s. Calculate the Power of this action. Include the units and answer to 1d.p ? Do not include your workings in your answer

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