physics y10 term 2 exam paper1 edited

8/22/2019 Physics Y10 Term 2 Exam Paper1 Edited

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A & O Centre of Excellence Term 2 Examination 2013Name : Physics Paper 1 Year 10

ANSWER ALL QUESTIONS [TOTAL 40 MARKS]

1. It is very difficult to walk on a sandy beach when wearing high-heeled shoes. This isbecauseA the pressure acting on the sandy ground is too largeB the force acting on the sandy ground is too largeC the area of the sole of each shoe is too largeD the person is pressing too hard on the sandy ground

2 Which of the following factors will not affect the pressure in a liquid?A Gravitational field strengthB Density of the liquidC Volume of the liquid

D Depth of the liquid

3 Which of the following graphs represents the relationship between the pressure, P, andthe depth, h, of a column of water?

4 When a balloon filled with helium is sealed and released in the air,A the balloon drops lower and decreases in sizeB the balloon rises and increases in sizeC the balloon stays at the same height but decreases in sizeD the balloon drops lower but increases in size

5 A barometer as shown in the figure is carried to the top of a mountain from a beach.

HOW would the atmospheric pressure and the length vary?


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Atmospheric Pressure Length,

A Increases Increases

B Decreases Increases

C Increases Decreases

D Decreases Decreases

6 The figure shows a U-tube manometer used to measure the pressure of a gas supply.

What is the difference in pressure between the gas supply and the atmosphericpressure?A 3 cm of waterB 15 cm of waterC 17 cm of waterD 18 cm of water

7 A bowl of hot soup covered with an airtight lid is left to cool as shown in the figure.

Why is it difficult to open the lid when the soup is cold?A Water vapour cannot escape and condenses on the lidB The atmospheric pressure is greater than the air pressure in the bowlC The air molecules move faster than the water moleculesD The airtight lid prevents the air molecules to decrease in size when the soup gets cold

8 The figure shows a hydraulic pump.

If the force applied is 10 N, what is the weight of the load that can be lifted?A 500 N B 1000 NC 2000 N D 5000 N


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9 A mechanic notices some air bubbles in the hydraulic brake fluid of a car. Herecommends changing the brake fluid. This is because

A the air bubbles will easily be compressed by pressure and affects the transmission ofpressure

B the air bubbles will escape from the piston and cause the brake fluid to leakC the air bubbles will expand when they are heated up and cause an explosionD the air bubbles will increase in size and cause the brake fluid to be incompressible

10 A light cylindrical wooden block is dropped vertically into a basin of water as shownbelow.

Which of the following would happen?

A The wooden block will stay afloat horizontallyB The wooden block will stay afloat verticallyC The wooden block will sink vertically to the bottomD The wooden block will stay afloat vertically but fully immersed in the water

11 An inverted test tube with some air trapped in it is placed in a tank as shown in the figure.

When the piston is pushed inwards, the test tubeA moves to the leftB moves to the rightC rises higherD sinks lower

12 The figure shows the cross section of an aerofoil.

If the aerofoil moves in the direction P, which of the following is true about the speed ofthe air flow and the pressure of the air at point X?


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13 A metal sheet has mass of 0.5 kg and area of 0.8 m . What is the pressure of the metalsheet acting on a surface?A 4.15 PaB 5.45 PaC 6.25 PaD 7.55 PaE 8.85 Pa

14

The figure above shows a block of gold with uniform cross sectional area ABCDE placed

on the surface of a floor. If the block of gold can be placed in a stable state of any of itssurface, which of the following will produce maximum pressure on the floor?

A ABCDE C CDIHB BCHG D DEJI

15 For a pin to enter a wooden board, the pressure exerted must be greater than 5 x 107 Pa.If the pin point has an area of 0.02 mm2, find the minimum force for the pin to enter theboard.A 1N D 4NB 2N E 5N

16 Gas is trapped in a closed container. There is gas pressure inside the container becausegas moleculesA move randomlyB move with equal speedC collide constantly with the walls of the containerD collide with one another

17 What will happen to the kinetic energy of gas molecules when they collide elastically?A IncreasesB DecreasesC Remains constantD Becomes zero

Speed of air flow Pressure of air

A Low High

B Low Low

C High Low

D High High

B


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The figure above shows a mercury column in a glass tube with trapped air in it. If theheight of the mercury column is 24 cm and atmospheric pressure is 76 cm Hg, what isthe pressure of the column in the glass tube?A 42 cm HgB 52 cm HgC 82 cm HgD 1000 cm Hg

E 120 cm Hg

19 Based on the kinetic theory of gases, the pressure exerted by a gas is caused byA collision of the gas molecules with the walls of a containerB gas molecules colliding with each other at high speedC random motion of the gas moleculesD gas molecules being very far apart from each other

20. Which of the following instruments is meant for measuring atmospheric pressure?A CarburetorB Siphon

C Fortin's barometerD Hydrometer

21

The figure above shows a hydraulic jack. The cross sectional areas of smaller piston andlarger piston are 20 cm2 and 60 cm2 respectively. If the smaller piston is pushed with aforce of 15 N, what will be the force experienced by the larger piston?A 30N D 50NB 40N E 55NC 45N


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22 Which of the following is not an application of Pascal's principle?A Hydraulic jackB Braking system of a vehicleC ManometerD Water bed

23

The figure above shows a man blowing hard at the opening of a metal tube. It isobserved that the polystyrene sphere is lifted to the opening of the metal tube. This

phenomenon occurs becauseA the air velocity at the upper section of the metal tube is less than the air velocity at thelower section

B the air pressure at the upper section of the metal tube is less than the air pressure atthe lower section

C the air density at the upper section of the metal tube is more than the air density at thelower section

D the air temperature at the upper section of the metal tube is more than the airtemperature at the lower section

24 Which of the following is based on Bernoulli's principle?

A Bourdon gaugeB Insect sprayC Lift pumpD Siphon

25

Air flows through a horizontal tube as shown in the figure causing water columns to risein three vertical glass tubes. Which of the regions A, B or C has the highest air velocity?


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26 Diagram shows a manometer is connected to a gas tank.

Based on the levels of the mercury, which statement is true ?

A. Pressure in the gas tank = atmospheric pressure.B. Pressure in the gas tank > atmospheric pressure.C. Pressure in the gas tank < atmospheric pressure.D. Pressure in the gas tank atmospheric pressure

27. Diagram shows a cylinder containing water.

If the pressure at point P is 12 000 N m-2, the height of h is[The density of the water = 1000 kg m-3]A 0.8 m C 1.2 m B 1.0 m D 2.0 m

28.

Diagram 9(a) Diagram 9(b)

The suction pump does not stick to the wall becauseA the atmospheric pressure is equal to the pressure inside the pumpB the atmospheric pressure is less than the pressure inside the pumpC the atmospheric pressure is more than the pressure inside the pumpD None stated above


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29. Diagram shows a school bag.

What is the function of x?

B to increase surface area and to decrease pressureA to increase weight and to increase pressureC to decrease weight and to decrease pressureD to decrease surface area and to increase weight

30. Diagram shows an object floating on the surface of water. Which statement is true?

A The density of the object is greater than the density of the water.B The volume of water displaced is equal to the volume of the object.C The weight of water displaced is equal to the weight of the object.D The mass of the object is equal to the buoyant force on the object.

31. The diagram shows the Fantastic Submarine drifting along from a narrow region to awider region because of

A Equilibrium of forces B Bernoullis principleC Archimedes principle D Conservation of momentum

32. Diagram shows a water reservoir.

The base of the wall is thicker because

A it will be more stable.B the density of water is highC Pressure of the water is highest at the surfaceD Pressure of the water is highest at the base


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33. Which of the following is a unit of density?A cm3/ g B g/cm2 C g/cm3 D kg /m2

34. The diagram shows a simple mercury barometer. The barometer reading is h cm ofmercury. What is the pressure at S?

A approximately zeroB atmospheric pressureC atmospheric pressure + hcm of mercuryD hcm of mercury

35. Two boys X and Y each have the same total weight and are standing on soft ground.

Which boy is more likely to sink into the soft ground and why?

37. A balloon is inflated in a cold room. When the room becomes much warmer, theballoon becomes larger. How does the behaviour of the air molecules in the balloon explainthis?

A The molecules become larger.B The molecules evaporate.C The molecules move more quickly.D The molecules repel each other.


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36. A student places his thumb firmly on the outlet of a bicycle pump, to stop the aircoming out. What happens to the pressure and to the volume of the trapped air as the pumphandle is pushed in?

pressure volumeA decreases decreasesB decreases remains the sameC increases decreasesD increases remains the same

38. A pin is squeezed between finger and thumb. Which statement is correct?

A The force of the pin is larger on the finger than on the thumb.B The force of the pin is larger on the thumb than on the finger.C The pressure of the pin is larger on the finger than on the thumb.D The pressure of the pin is larger on the thumb than on the finger.

39. Liquid X has a density of 1010 kg / m3. Liquid Y has a density of 950 kg / m3.The liquids are poured into tubes as shown. Which tube has the greatest pressure on itsbase?

40. Diagram shows the cross-section of an iceberg floating on the surface of the sea.Which statement is correct?

A Weight of iceberg = Weight of sea water displacedB Volume of iceberg = Volume of sea water displacedC Density of iceberg = Density of sea water displacedD None above

physics y10 term 2 exam paper1 edited

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