IGCSE PHYSICS REVISION: w07 paper 1-6

1. Some water is poured into four tubes of different cross-sectional areas. Which tube contains the largest volume of water?

A B C D

area = 10cm2 area = 20cm2 area = 30cm2 area = 40cm2

6cm 4cm 3cm 2cm

2. Four students try to explain what is meant by acceleration. Which student makes a correct statement?

A  It is related to the changing speed of an object.

B  It is the distance an object travels in one second.

C  It is the force acting on an object divided by the distance it travels in one second.

D  It is the force acting on an object when it is near to the Earth.

3. A tennis player hits a ball hard and 0.4 s later hears an echo from a wall.

The speed of sound in air is 330m/s.How far away is the player from the wall?

A 66m B 132m C 264m D 825m

4. A student is trying to find the density of water and of a large, regularly-shaped solid. Which apparatus is needed to find the density of both?

A  balance, clock, ruler

B  balance, measuring cylinder, ruler

C  balance, measuring cylinder, string

D  clock, ruler, string

5. Fig. 1.1 shows some liquid in a measuring cylinder. The metal can next to it has a cross- sectional area which is four times that of the measuring cylinder.

cm3

100

measuring cylinder 90liquid 80

70 metal can60

50 40 30 20 10

Fig. 1.1

(a) State the volume of the liquid.

volume = ...............60.................. cm3 [1]

(b)  The liquid is poured into the metal can.

On Fig. 1.1, draw the surface of the liquid in the can. [2]

liquid surface lower than in cylinder (1) liquid surface level with 15 cm3 (± 5 cm3) (1)

(c)  Complete the following sentence.

The pressure of the water at the bottom of the can is ...............LESS............ than the pressure that the water had at the bottom of the measuring cylinder.

[1] [Total: 4]

6 A motorcyclist drives along a straight road. Fig. 6.1 gives information about the first 10s of his ride.

start after 5s after 10 s

0m/s 9m/s 18m/s

Fig. 6.1

(a) From the information on Fig. 6.1,

(i) describe the motion of the motorcyclist by ticking one of the following boxes,

constant speed

uniform acceleration V

uniform deceleration [1]

(ii) estimate the average speed of the motorcyclist during the 10 s,

average speed = ................ 9 (m/s).............. m/s [1]

(iii) calculate the distance travelled during the 10 s.

distance travelled = ..... s=vt, 90 (m) or 10 x 9m/s evaluated........ m [2]

(b) State why the distance travelled in the first 5s is less than half of the distance travelled in the first 10s of the journey.

average speed is lower

....................................................................................................................... [1]

[Total: 5]

7. A large plastic ball is dropped from the top of a tall building.Fig. 1.1 shows the speed-time graph for the falling ball until it hits the ground.

20

speed 15

m/s 10

5

0 0 1 2 3 4 5 6 time/s

Fig. 1.1

(a) From the graph estimate,

(i)  the time during which the ball is travelling with terminal velocity,

time = ...... 1.6s to 1.8s ALLOW 4.2–6s ALLOW 4.4–6s NOT 2s NOT4.0–6s........ [1]

(ii)  the time during which the ball is accelerating,

time = .. 6 – ans (i), evaluated ALLOW 0 – 4.2s ALLOW 0 – 4.4s NOT 0 – 4s..... [1]

(iii)  the distance fallen while the ball is travelling with terminal velocity,

distance = ...... (i) × 20.... 32 – 36m.... allow B1 only for 40m with no working........ [2]

(iv) the height of the building.

height = ..... area under whole graph or 1⁄2vt + (iii)... 70 – 95m............... [2]

(b) Explain, in terms of the forces acting on the ball, why

(i) the acceleration of the ball decreases,

weight of ball down and (air) resistance up OR friction opposes weight upward/resistance/friction force increases with time/distance/speed/as ball fallsnet force reducesless force, so less acceleration any 3

....................................................................................................................... [3]

(ii) the ball reaches terminal velocity.

up force = down force OR no resultant force OR air res. = weight (1)

no net force, no acceleration/constant speed (1)

........................................................................................................................[2]

[Total: 11]

8. (a) An IGCSE student is investigating the differences in density of small pieces of different rocks. She is using an electronic balance to measure the mass of each sample and using the ‘displacement method’ to determine the volume of each sample. Fig. 5.1 shows the displacement method.

cm3 cm3

100 100 80 80 60 6040 40 rock sample20 20

V1 V2

Fig. 5.1

(i) Write down the volume shown in each measuring cylinder.

V1 = ............... 50.....................

V2 = ................ 75/76...............

(ii) Calculate the volume V of the rock sample.

V = ........................25 cm3...............

(iii) Calculate the density of sample A using the equation

density = m / V ,

where the mass m of the sample of rock is 109 g.

density = .................. density 4.36 g/cm3............... [4]

(b) The table shows the readings that the student obtains for samples of rocks B and C. Complete the table by

(i)  inserting the appropriate column headings with units,

(ii)  calculating the densities using the equation density = m / V,

sample m/ g V2 V1 V/ cm3 density / g/cm3

B 193 84 50 34 5.68

C 130 93 50 43 3.02

[4]

(c) Explain briefly how you would determine the density of sand grains.

Same method, lots of grains

........................................................................................................................[1]

[Total: 9]

IGCSE PHYSICS REVISION: s07 paper 1-6

9. The diagram shows a thick-walled tube. The thickness of the wall is 3 mm.

What is the internal diameter d of the tube?A 2.8cm B 3.1cm C 3.4cm D 7.4cm

10. The graph shows the progress of an athlete in a 100 m race.

What time was taken to travel 10 m from the start?

A 2.4s B 2.8s C 65s D 70s

11. The mass of a full bottle of cooking oil is 1.30 kg.

When exactly half of the oil has been used, the mass of the bottle plus the remaining oil is 0.90 kg.

What is the mass of the empty bottle?

A 0.40kg B 0.50kg C 0.65kg D 0.80kg

12. Which of the following is a unit of density?

A cm3 /g B g/cm2 C g/cm3 D kg/m2

13. Each of the solids shown in the diagram has the same mass. Which solid has the greatest density? B

14.  A starting pistol is fired 640 m away from a spectator.

640 m

spectator

The spectator hears the sound of the starting pistol two seconds after seeing the flash from the gun.What is the speed of sound in air?

A 160m/s B 320m/s C 640m/s D 1280m/s

s7 qp2/ q1-2

15. (a)seconds hand at 35 s

minutes hand at or just to R of 60 (up to 1⁄2 division)

(b) seconds hand at 55 s

minutes hand between 4 and 5

(c) 4 minutes 20 s

16. In a training session, a racing cyclist’s journey is in three stages.

Stage 1 He accelerates uniformly from rest to 12m/s in 20s.

Stage 2 He cycles at 12m/s for a distance of 4800m.

Stage 3 He decelerates uniformly to rest.

The whole journey takes 500s.

(a) Calculate the time taken for stage 2.

speed = distance/time in any form OR 4800/12

400 (s) time = ............... s [2]

(b) On the grid of Fig. 2.1, draw a speed/time graph of the cyclist’s ride. [3]

(b) straight line up to 12 m/s, 20s ± 1⁄2 small square horizontallinefor400s(e.c.f.forstartpointandfrom(a))

straight line down to 0 m/s at 500 s

(c) Show that the total distance travelled by the cyclist is 5400 m.

(c) distance = 1⁄2 base x height OR area under graph OR equation of motion

accel. distance = 120 m

decel. distance = 480 m

NOTE: NO MARKS for using (d) and then going back to (c)

total distance = 120 + 4800 + 480 stated

[4]

(d) Calculate the average speed of the cyclist.

(d) averagespeed = total distance/total time OR 5400/500 OR 5400/920

10.8 (m/s) OR 11 (m/s)

average speed =......11......... m/s [2]

[Total: 11]

17.

1 (a) θ1 = 23 [1]

unit oC correctly written [1]

(b)

19 (°C) [1]

34 (°C) [1]

(c) (i)heat loss (to surroundings) [1]

(ii) any two from:

insulation / mat / foil

lid

speedier transfer

repeats

wait to record max temperature

stirring

include beaker in calculation