0625_s18_qp_32
A paper of Physics, 0625
Questions:
12
Year:
2018
Paper:
3
Variant:
2
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1
shows the speed-time graph for a car. speed m / s time / s X Y Z W On , the labels W, X, Y and Z show the points when the car’s motion changed. On , draw a line from each section of the graph to the correct description of the motion. section of graph from W to X from X to Y from Y to Z description of the motion accelerating decelerating stationary constant speed Calculate the distance that the car travels between 60 s and 100 s. distance travelled = m shows that the car’s acceleration is greater than its deceleration. Explain how the graph shows this.
1. Motion, forces and energy  →  1.2. Motion
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3
A man uses a metal bar to remove an iron nail from a piece of wood, as shown in . nail wood pivot 150 N 0.50 m The man applies a force of 150 N at a distance of 0.50 m from the pivot. Calculate the moment of this force about the pivot. Include a unit. moment = The force applied by the man produces a turning effect about the pivot. Describe another example of using the turning effect of a force. The man tries to use the metal bar to remove another nail from the piece of wood. He applies the same force of 150 N at a distance of 0.50 m from the pivot. The turning effect produced is not enough to remove this nail from the piece of wood. Describe how the man can increase the turning effect without increasing the force.
1. Motion, forces and energy  →  1.5.2. Turning effect of forces
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4
A Bunsen burner heats a beaker of water, as shown in . stand thermometer beaker water Bunsen burner shows the thermometer used in . State the temperature shown on the thermometer. –10 110 °C temperature = ° C The thermometer shown in uses a physical property that changes with temperature. Indicate the measurable property that changes with temperature. Tick one box. expansion of glass expansion of liquid colour of liquid colour of glass Thermal energy transfers through the bottom of the beaker to the water. State the name given to this process. Thermal energy transfers throughout the water in the beaker. Describe and explain how this happens.
2. Thermal physics  →  2.2.3. Melting, boiling and evaporation
2. Thermal physics  →  2.2.1. Thermal expansion of solids, liquids and gases
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5
represents an object positioned on the principal axis of a thin lens. F F object principal axis Each small square of the grid represents 0.5 cm. Each principal focus of the lens is labelled F. Use the grid to determine the focal length of the lens. focal length = cm On , draw a ray from the top of the object that passes through a principal focus, then through the lens and beyond it. On , draw a second ray from the top of the object that passes through the centre of the lens. Continue the path of this ray to the edge of the grid. On , draw an arrow to show the position and nature of the image produced by the lens.
3. Waves  →  3.2.3. Thin lenses
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7
shows some parts of the electromagnetic spectrum. radio waves infra-red waves visible light ultraviolet waves X-rays γ-rays In , one part of the electromagnetic spectrum is not labelled. State the name of this part. The speed of visible light waves in a vacuum is 3.0 × 108 m / s. Suggest a value for the speed of infra-red waves in a vacuum. speed = m / s Some parts of the electromagnetic spectrum have a wavelength shorter than that of visible light. State one example. X-rays and γ-rays are used in hospitals. Describe one medical use for X-rays and one use for γ-rays. X-rays γ-rays Explain why γ-rays are dangerous to living things.
3. Waves  →  3.3. Electromagnetic spectrum
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8
Complete the sentences about sound. Use words from the box above each sentence. glows reflects refracts vibrates Sound is produced when a source . electromagnetic longitudinal transverse Sound waves are waves. metal vacuum liquid Sound waves cannot travel through a . Humans, elephants, mice and dolphins have different hearing ranges. shows the hearing range for each type of animal. humans elephants mice dolphins frequency / Hz 10 000 100 000 1000 000 State the lowest frequency of sound that can be heard by mice. Hz State the highest frequency of sound that can be heard by elephants. Hz Explain how the chart shows that elephants can hear some sounds that humans cannot hear. State the term given to the high frequencies that dolphins can hear but humans cannot hear.
3. Waves  →  3.4. Sound
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9
shows a simple circuit. V A 0.50 A 12.0 Ω 6.0 Ω The current in the wires of the circuit is a flow of particles. Indicate the name of these particles. Tick one box. electrons atoms protons Calculate the combined resistance of the two resistors. resistance = Ω Calculate the potential difference (p.d.) reading that would be shown on the voltmeter. potential difference (p.d.) = V The circuit is changed. The two resistors are connected in parallel. Explain what happens, if anything, to the current reading on the ammeter.
4. Electricity and magnetism  →  4.3.2. Series and parallel circuits
4. Electricity and magnetism  →  4.3.3. Action and use of circuit components
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10
shows a balloon hanging from an insulating thread. insulating thread balloon A student gives the balloon a positive charge. Which statement explains why the balloon becomes positively charged? Tick one box. The balloon gains electrons The balloon loses electrons The balloon gains protons The balloon loses protons The student brings a charged rod close to the balloon as shown in . charged rod + + + + + + + + + + + + + State the type of charge on the rod. Explain your answer. Electrical charges can move easily through some materials. Draw a circle around each material that charges can move through easily. copper plastic rubber silver wood
4. Electricity and magnetism  →  4.2.1. Electric charge
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11
represents a transformer. Q P a.c. input primary coil State the name of the part of the transformer labelled Q in . In , part P is made from a metal. 1. State the metal used to make part P. 2. State the term given to part P. There is an alternating current (a.c.) in the primary coil. Describe what this current produces in part P. Complete the sentence using terms from the box. more fewer step-up step-down When there are turns in the primary coil than in Q, the device is called a transformer. The high-voltage transmission of electricity uses transformers. Describe two advantages of transmitting electricity at high voltages rather than at low voltages. 1. 2.
4. Electricity and magnetism  →  4.5.6. The transformer
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12
The nuclide notation A Z X describes the nucleus of one type of atom. Draw a line from each symbol to the correct description for that symbol. symbol description A Z X number of neutrons element symbol proton number nucleon number number of atoms One radioactive isotope has a half-life of 6.0 years. A sample of this isotope has a mass of 12 mg. Calculate the mass of this isotope that remains in the sample after 18 years. mass remaining = mg The sample decays by emitting a β-particle. Describe the nature of a β-particle. Describe how the nucleus of the isotope changes due to the emission of a β-particle.
5. Nuclear physics  →  5.2.3. Radioactive decay
5. Nuclear physics  →  5.1.2. The nucleus
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