0625_m16_qp_32
A paper of Physics, 0625
Questions:
12
Year:
2016
Paper:
3
Variant:
2
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1
A student is investigating volume and density. The student has a box, as shown in , a balance, a rule and some dry sand. shows the dimensions of the inside of the box. 4.0 cm 4.0 cm 5.0 cm (not to scale) Calculate the volume of sand needed to fill the box. volume of sand = cm3 The student measures the mass of the box when empty and when filled with sand. quantity mass / g mass of box filled with sand 216.0 mass of empty box 40.0 Calculate the mass of the sand in the box, using her results. mass of sand = g Calculate the density of the sand. density of sand = g / cm3 A miner has a bag containing a mixture of gold dust and sand. Gold has a density of 19.3 g / cm3. He heats the mixture until the gold melts. Predict whether the sand will float on top of the molten gold. Explain your answer.
1. Motion, forces and energy  →  1.4. Density
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2
Three students walk together from school to a bridge. The students stand together on the bridge for three minutes and then return separately to school. The distance-time graphs for student A, student B and student C are shown in . time / minutes distance / m students walk together students together on bridge student A student B student C Determine the distance from the school to the bridge. distance = m Calculate the average speed of the students when they are walking to the bridge. Give your answer in m / s. average speed = m / s The students return to school at different speeds. One student walks slowly, one student walks quickly and the other student runs. State which student runs. Explain how this is shown by the graph. student explanation
1. Motion, forces and energy  →  1.2. Motion
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3
shows a see-saw. The see-saw is horizontal when not in use. P A small child sits on one seat of the see-saw. This creates a turning effect about point P. Which of these words means the turning effect of a force? Tick one box. equilibrium moment resultant State the scientific name for point P. A much heavier boy sits on the other end of the see-saw, as shown in . P end A end B boy moves The heavier boy moves slowly along the see-saw from end B until he reaches point P. Describe and explain what happens to the see-saw.
1. Motion, forces and energy  →  1.5.2. Turning effect of forces
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4
shows a balloon near a window on a warm sunny day. shows how the volume of the balloon changes throughout the day. 10:00 12:00 time of day 14:00 16:00 18:00 volume of balloon / cm3 Describe how the volume changes throughout the day. Explain, in terms of the gas molecules inside the balloon, why the volume changes in this way between 10:00 and 14:00. [To tal: 4]
2. Thermal physics  →  2.1.3. Gases and the absolute scale of temperature
2. Thermal physics  →  2.3.2. Convection
2. Thermal physics  →  2.2.1. Thermal expansion of solids, liquids and gases
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5
shows a wave-powered generator. It generates electricity from the movement of sea waves. chamber air incoming waves waves make water rise and fall turbine and generator The sentences below describe how the wave-powered generator works. A Air is pushed through the turbine, making it spin. B Water rises and falls in the chamber. C The turbine turns a generator. D The generator produces electrical energy. E Waves travel towards the chamber. Write letters in the boxes below to arrange the sentences in the correct order. The first one is done for you. E More electricity needs to be generated from renewable sources instead of from burning fossil fuels. State three benefits of generating electricity from renewable sources rather than from fossil fuels.
1. Motion, forces and energy  →  1.7.3. Energy resources
3. Waves  →  3.1. General properties of waves
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6
shows a plane mirror reflecting a ray of light. w x y z mirror There is a dashed line drawn at right angles to the mirror. State the name of this line. State which angle, w, x, y, or z, is the angle of reflection. shows a ray of white light entering a semi-circular glass block. The ray of light emerges at point R and travels alongside the flat surface. glass white light R S T screen A spectrum of colours can be seen on the screen between S and T. State the colours in the correct order. One has been done for you. red colour at S colour at T The angle of the ray is changed. On , complete the path of the ray of light. Explain your answer. glass white light air
3. Waves  →  3.2.1. Reflection of light
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8
Some students want to determine the speed of sound in air. Describe a method they could use. Include the measurements they must make. The graph in represents a sound wave. 0 A C D E F B displacement distance Which distance represents the amplitude of the wave? Circle your answer. AC AF BE DE CF Which distance represents the wavelength of the wave? Circle your answer. AC AF BE DE CF Another sound wave, of the same wavelength, is louder. On , draw this wave.
3. Waves  →  3.4. Sound
3. Waves  →  3.1. General properties of waves
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10
A student uses a bar magnet to distinguish between an unlabelled magnet and an iron bar. Describe how the student identifies which is the magnet and which is the iron bar. The student suspends the iron bar near to a coil, as shown in . The iron bar is free to move. S coil suspended iron bar Describe and explain what happens when the switch S is closed. shows a wire passing through a piece of card. card large current There is a current in the wire in the direction of the arrow. On , draw the pattern of the magnetic field lines due to the current in the wire. Include the direction of the field. card wire carrying current into the page
4. Electricity and magnetism  →  4.1. Simple phenomena of magnetism
4. Electricity and magnetism  →  4.5.3. Magnetic effect of a current
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11
A student changes the current in a filament lamp. She measures the current and the potential difference (p.d.) across the lamp. is an incomplete circuit diagram. On , complete the unfinished circuit symbols. One pair of readings for the lamp is shown in the table. p.d. / V current /A 6.0 1.2 Calculate the resistance of the filament in the lamp for these readings. resistance of filament = Ω After many hours of use, the filament wire in a lamp becomes thinner. State the effect, if any, on the resistance of the lamp. Complete the circuit in to show a battery connected to three lamps arranged in parallel. Describe two advantages of connecting these lamps in parallel with the battery.
4. Electricity and magnetism  →  4.2.4. Resistance
4. Electricity and magnetism  →  4.3.2. Series and parallel circuits
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12
Three types of ionising radiation are alpha, beta and gamma. Draw one straight line from each type of radiation to a property of that radiation. type of radiation property of radiation alpha α beta β gamma γ has a negative charge has a long half-life is stopped by paper is electromagnetic radiation Polonium-210 has the nuclide notation 210 84Po. For one neutral atom of polonium-210, determine the number of protons, determine the number of neutrons. shows a decay curve for polonium-210. time / weeks count rate / counts per second Use the graph to determine the half-life of polonium-210. half-life = weeks
5. Nuclear physics  →  5.2.3. Radioactive decay
5. Nuclear physics  →  5.2.4. Half-life
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