Mock test. 1 hour and 45 minutes. 95 marks available.
Each time the test is taken it will present different questions.
GCSE OCR Combined Science B Papers 3 and 7
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#1. Is speed a vector or a scalar?
#2. Calculate the acceleration of the object in the graph between 5 and 6 seconds.
This is a straight-line graph.
Calculate the gradient of a straight-line graph using the following:
y₂ – y₁ / x₂ – x₁
30-20/6-5 = 10m/s²
This is the same as a simpler version:
Rise/run
or vertical distance / horizontal distance
#3. What is this component?
#4. Conventional current goes from:
#5. What devices are used to determine the shape of a magnetic field?
#6. What is the purpose of the earth wire in a plug?
#7. What do we call energy that is stored in moving objects?
#8. What wavelength of the electromagnetic spectrum is useful for communications?
#9. What wavelength of the electromagnetic spectrum has the most energy?
#10. What wavelength of the electromagnetic spectrum have the most energy?
#11. What is amplitude?
#12. Wave speed is linked to wave frequency and wavelength by which equation?
#13. When a light wave enters glass or water from the air, does it refract towards or away from the normal line?
#14. How can electrons change orbits?
#15. True or False – Scalar quantities only have magnitude?
#16. What is this component?
#17. What is induced magnetism?
#18. Fill in the blank: A current flowing through a wire causes a ………. field.
#19. Magnets have north and south poles – if north and south poles are put close together what will happen?
#20. Is oil a fossil fuel?
#21. Energy can be transferred to useful and non-useful forms. Which of the following are non-useful transfers of energy?
Select all that apply:
#22. Calculate the force when an object changes its momentum by 2550 kg m/s in 5 seconds. Include the units for force in your answer.
#23. What is the purpose of the neutral wire in a plug?
#24. What wavelength of the electromagnetic spectrum does a radiator glow at?
#25. What is a battery?
#26. Which of the following are uses for magnets?
Select all that apply:
#27. Why is the total energy transferred to a kettle’s heating element, more than the total energy of the boiled water inside the kettle?
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.
#28. 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?
#29. Calculate the forces involved in an accident where a 1650 kg car travelling at 20 m/s hits a wall and the car comes to a stop in 0.05 seconds. Use the following equation: Force = mass x final velocity – mass x initial velocity / t (include units in your answer)
#30. True or false – microwave radiation at certain frequencies could cause the internal heating of cells in our bodies?
#31. Do light waves speed up or slow down then they go from air into water?
#32. How can we upgrade our windows to reduce heat loss?
#33. Which of the following are ways that a magnetic field of an electromagnet can be made stronger?
Select all that apply:
#34. Electrons are negatively charged, so they move to which terminal of a battery or cell?
#35. What wavelength of the electromagnetic spectrum is useful for security marking?
#36. Is coal a fossil fuel?
#37. Which of the following is an advantage of using nuclear fission power plants?
#38. What is gamma radiation?
#39. Complete the sentence: Stopping distances are made up of the sum of braking distance and …….. distance.
#40. What are the units we use for measuring energy?
#41. Which of the following is a disadvantage of solar panels?
#42. With electromagnetism the direction of the current depends on which of the following?
#43. Is this a parallel or series circuit?
#44. How is kinetic energy stored?
#45. Complete the sentence: In the UK the domestic electricity supply has a frequency of … Hz and is about ….. V.
#46. What is this component?
#47. Calculate the total momentum after two objects collide. Object A has a momentum of 20 kg m/s and Object B has a momentum of -15 kg m/s. Include the units “kg m/s” in your answer.
#48. Are voltmeters connected in parallel or series?
#49. What do we call energy that is stored inside atoms?
#50. What is this component?
#51. A coil of wire with current flowing through it is an electromagnet. What else do we call a coil of wire?
#52. Calculate the mass of a vehicle with a momentum of 42000 kg m/s and a velocity of 25 m/s. Include the units in your answer. ? momentum equation is available in the description below the quiz
#53. Which form of radiation is moderately ionising?
#54. What are fossil fuels?
#55. Do ultraviolet rays have longer wavelengths than infrared waves?
#56. What is the function of a cell?
#57. Aluminium is a magnetic material – true or false?
#58. A wire carrying a current experiences a force near a magnetic field. The size of the force is dependant on which three quantities?
Select all that apply:
#59. Is acceleration a vector or a scalar?
#60. Is coal renewable?
#61. An object with a mass of 5kg is 100m above the ground and has 35 J of gravitational potential energy. What will happen to the gravitational potential energy if the mass was increased to 10kg?
#62. The needles of plotting compasses are tiny magnets – they always point near the Earth’s North Pole – why is this?
#63. Which factors does the angle of refraction depend on?
Select all that apply:
#64. When two magnets are placed alongside each other – what is the best way to describe the shape of the magnetic field they produce?
#65. True or false – electromagnetic waves cannot travel through water?
#66. What do we call energy that is stored in objects that are at high altitude?
#67. For circular motion to take place there must be a resultant force that acts towards the centre of the circle. What is the name of this force?
#68. Is natural gas renewable?
#69. Which of the following is an advantage of non-renewable energy sources?
#70. What is this component?
#71. What is the function of a variable resistor?
#72. Using the equation ρ = m/V, calculate the density of a gold bar that has a mass of 25kg and a volume of 0.0013m³. Answer to 1 decimal place and give your answer in kg/m³. ? The units for density are kg/m³, do not include them in your answer
#73. 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?
#74. What wavelength of the electromagnetic spectrum is useful for photography?
#75. Which of the following is the source of coal?
#76. Cobalt is a magnetic material – true or false?
#77. Using the equation: Efficiency = useful energy/total energy, calculate the efficiency in the following scenario. Useful energy = 55 J, Total energy = 100 J. Answer to 2dp.
#78. Which of the following equations correctly describes the relationship between force and change in momentum (Newton’s Second Law)
#79. What does E represent in the equation for work done?
#80. What is this Sankey Diagram showing?
#81. Switches are both a functional and a safety component of a circuit. Complete the sentence: When switches are closed, no …….. flows around a circuit.
#82. Which is the correct definition for renewable energy resources?
#83. The potential danger associated with an electromagnetic wave increases with?
#84. What is the source of energy for the sun?
#85. Overexposure to ultraviolet light could cause which of the following problems?
#86. What is the function of a switch?
#87. Why would a wire carrying a current experience a force near a magnetic field?
#88. Why are metals good conductors?
#89. Renewable energy resources mostly get their energy from the same source what is this source?
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