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Physical revision

Total questions: 95

Worksheet time: 2hrs 37mins

Name
Class
Date
1.

Iodine-131 has a half life of 8.07 days. What fraction of a sample of Iodine-131 is left unchanged after 16.14 days?

a)

1/2

b)

1/4

c)

1/8

d)

1/16

2.

Finish the following alpha decay reaction:

a)
b)
c)
3.

Which type of radiation releases an electron?

a)

Alpha radiation

b)

Beta radiation

c)

Gamma radiation

d)

Theta radiation

4.

What is the current through the battery?

a)

450 A

b)

2 A

c)

20 mA

d)

9 A

5.

If a 75 W light bulb operates at a voltage of 120 V, what is the current in the bulb?

a)

0.63 A

b)

1.6 A

c)

9.0 x 103 A

d)

1.1 x 10-4 A

6.
Compared to thin wires, electrical resistance in thick wires is:
a)
greater
b)
less
c)
the same
7.
A car dashboard panel bulb has a resistance of 33 Ω when it is placed across a 12 V battery. What is the current through the circuit?
a)
0.36 A
b)
2.8 A
c)
3.96 A
d)
396 A
8.

Volt meters are connected in.....

a)

series

b)

parallel

9.

During a physics lab, a plastic strip was rubbed with cotton and became positively charged. The correct explanation for why the plastic strip becomes positively charged is that ...

a)

the plastic strip acquired extra protons from the cotton.

b)

protons are created

c)

protons are transferred from the plastic to the cotton

d)

electrons are transferred from the plastic to the cotton

10.

According to the graph how fast does the person travel in the first 5 seconds?

a)

2 m/s

b)

10 m/s

c)

12.5 m/s

d)

1 m/s

11.

Just after the parachutist jumps out of the plane (before the parachute opens). The relative forces on them are:

a)

downward weight balances the upward friction force

b)

upward friction is constant

c)

downward weight is greater that the upward friction

d)

upward friction is greater than the downward weight

12.

A submarine is found 20 meters below the surface of the sea. The density of sea water is 1020 kg m-3 and g = 10 m/s2 Calculate the pressure due to the sea water acting on the submarine?

a)

20.4 Pa

b)

2.04 x 103 Pa

c)

2.04 x 102 Pa

d)

2.04 x 105 Pa

e)

2.04 x 10-2 Pa

13.
Pressure is measured in what units
a)
Newtons
b)
m/s
c)
Pascals
d)
Moles
14.

What types of waves transfer energy perpendicular to the direction of oscillations?

a)

Longitudinal waves

b)

Transverse waves

c)

Sound waves

d)

P-waves

15.

What is the speed of a wave that has a wavelength of 2 and a frequency of 2.5 Hz?

a)

2.5 m/s

b)

5 m/s

c)

4.5 m/s

d)

6 m/s

16.

What would be the effect on the particles if the gas is heated?

a)

They would slow down

b)

They would stop moving

c)

They would speed up

d)

There would be no effect

17.

How far does the car travel at constant speed?

a)

75 m

b)

150 m

c)

200 m

d)

250 m

18.

How far does the car travel whilst decelerating

a)

75 m

b)

150 m

c)

200 m

d)

250 m

19.

Calculate the mass of a object with density 2 g/cm3 and dimensions 10 cm x 5 mm x 1 m

a)

0.04 g

b)

1000 g

c)

100 g

d)

25 g

20.

Final velocity is 5m/s, initial velocity is 1m/s, time taken for change is 2 seconds. Calculate the acceleration, with correct units

a)

1m/s

b)

2m/s

c)

1m/s2

d)

2m/s2

21.

Electrical current is:

a)

the flow of neutrons

b)

the flow of ions

c)

the flow of electrons

d)

the flow of charge

22.

What is an alternating current?

a)

A current that flows back and forth in a wire.

b)

A current that always flows in one direction.

c)

A potential difference that flows back and forth in a wire.

d)

A potential difference that always flows in one direction.

23.

The current in a SERIES circuit:

a)

Is the same everywhere

b)

Gets split between the components

c)

Is measured in volts

d)

Gets stopped by resistors

24.

All waves can both reflect and refract. True or False?

a)

True

b)

False

25.

As a ray light ray travels from a less dense to a more dense optical medium (e.g. air to glass)

a)

the incident ray travels straight on

b)

the incident ray bends away from the normal

c)

the incident ray travels down the normal

d)

the incident ray bends towards the normal

26.

Convection cannot happen in solids because:

a)

the particles are vibrating

b)

because they are fluids

c)

because the particles are bonded together and cannot flow

d)

Because they have a high melting point

27.

Kinetic energy is calculated using

a)

m x g x h

b)

Force x distance

c)

1/2 mass x velocity

d)

1/2 mass x velocity x velocity

28.

A uniform magnetic field can be produced between 2 permanent magnets. Which of the following arrangements of magnets will produce the field shown?

a)

A

b)

B

c)

C

d)

D

29.

The diagram shows a coil of wire with a current flowing through it in the direction shown by the arrows. The coil is between 2 magnets as shown.


Using Fleming's Left hand Rule, which way will the coil move?

a)

upwards

b)

downwards

c)

rotate clockwise

d)

rotate anticlockwise

30.

What does 'induction' mean?

a)

The production of a force on a conductor due to a magnetic field

b)

The production of a force on a conductor due to friction

c)

The production of a voltage in a conductor due to a magnetic field

d)

The production of a voltage in a conductor due to friction

31.
The measure of cycles per second is called the ____________.
a)
period
b)
frequency
c)
wavelength
d)
velocity
32.
The SI unit used to measure the frequency of a wave is _____________.
a)
hertz
b)
seconds
c)
meters
d)
decibels
33.
The amount of time for one wave cycle to occur is called the ____________.
a)
wavelength
b)
trough
c)
period
d)
frequency
34.
A wave can bend and change speed, as it passes through a boundary from one medium to another. This is called __________.
a)
refraction
b)
reflection
c)
diffraction
d)
absorption
35.
The musical term "pitch" is directly associated with which wave property?
a)
wavelength
b)
amplitude
c)
frequency
d)
period
36.
The loudness or volume of sound is related to which wave property?
a)
wavelength
b)
frequency
c)
amplitude
d)
speed
37.
What is the approximate speed of sound in normal air?
a)
34 m/s
b)
340 m/s
c)
30,000 m/s
d)
300 million m/s
38.
The product of frequency and wavelength is always equal to the wave's ______________.
a)
amplitude
b)
velocity
c)
period
d)
color
39.
The lowest point of a transverse wave is called the _________.
a)
crest
b)
trough
c)
amplitude
d)
rest position
40.
The amplitude measures the distance between the:
a)
crest and next crest
b)
trough and next trough
c)
crest and trough
d)
rest position and crest
41.

wavelength = 0.5 m

wave speed = 5 m/s

Calculate the frequency!

v = fλ

a)

5 seconds

b)

10 Hz

c)

2.5 Hz

d)

1/5 m

42.
The oscillations of these types of waves cause the medium to move perpendicular to the direction of the wave's motion.
a)
longitudinal
b)
transverse
c)
sound
d)
seismic
43.
using f = 1/T, calculate the frequency of a wave that takes 2 seconds to pass by.
a)
1/2 seconds
b)
1/2 Hz
c)
2 seconds
d)
2 Hz
44.
Which is NOT a property of light?
a)
light travels in straight lines
b)
light has mass
c)
light carries energy
d)
light has acts like a wave
45.
Which region of the electromagnetic spectrum has MORE energy than visible light?
a)
ultraviolet rays
b)
radio waves
c)
microwaves
d)
infrared radiation
46.
The combination of all colours of light is called _______ light.
a)
invisible
b)
ROYGBIV
c)
electromagnetic
d)
white
47.
BLUE light has  _______ frequency when compared to RED light.
a)
a higher
b)
a lower
c)
an equal
d)
an uneven
48.
The Law of Reflection states that the angle of ___________ is equal to the angle of reflection.
a)
inversion
b)
refraction
c)
incidence
d)
absorption
49.
Materials with a higher refractive index, n , tend to refract light at  ________ angle.
a)
a larger
b)
a smaller
c)
at an inconsistent
d)
a very tight
50.
The colour of visible light is directly related to its ____________.
a)
wavelength
b)
amplitude
c)
intensity
d)
brightness
51.
Which regions are in order of INCREASING wavelength?
a)
gamma, UV, radio
b)
x-ray, UV, gamma
c)
microwave, infrared, visible light
d)
radio, visible light, gamma
52.
When a wave approaches a barrier with a gap in the middle, some of the wave energy will reflect backwards but some will pass through the gap and then
a)
diffract
b)
refract
c)
reflect
d)
disappear
53.
The lens shown in the diagram
a)
is a converging lens
b)
can not be used in magnifying glasses
c)
is a diverging lens
d)
acts like a mirror when the object is far away
54.
When a prism has visible light passing through it that is white as shown in the diagram
a)
the white light will spread out into different lines
b)
the different colours that make up white light will take different paths through the prism
c)
violet light bends the least
d)
red light travels along the dotted line
55.

Human hearing range of frequencies

a)

20 Hz - 20 kHz

b)

20 kHz - 20 000 kHz

c)

2 kHz - 200 kHz

d)

25 kHz - 25 kHz

56.
The reading shown on the micrometer is:
a)
6.48 mm
b)
6.20 mm
c)
6.02 mm
d)
5.98 mm
57.
The average of these three measurements:
34.53 s    33.97 s   34.09 s
a)
102.59 s
b)
34.20 s
c)
34.17 s
d)
102.5 s
58.
The instrument used to measure volumes of liquid
a)
measuring cylinder
b)
measuring cup
c)
measuring bucket
d)
measuring beaker
59.
The SI unit for density
a)
kgm-3
b)
kgm3
c)
kg3m
d)
kg-3m
60.
Determine the volume taken up by 1650 g of iron if the density is known to be 7895 kgm-3
a)
209 cm3
b)
209 m3
c)
0.000209 cm3
d)
20.9 m3
61.
Weight is
a)
a gravitational force
b)
a gravitational field
c)
a mass
d)
a gravitational acceleration
62.
The product of mass and acceleration is
a)
net force
b)
friction 
c)
weight
d)
velocity
63.
Air resistance is a form of 
a)
thrust
b)
friction
c)
weight
d)
acceleration
64.
If there is no resultant force acting on an object it will 
a)
remain at rest 
b)
continue at a steady velocity
c)
remain at rest or continue at a steady velocity
d)
slow down
65.
When an unbalanced force acts straight on to an object in motion for a certain period of time
a)
it will cause a change of momentum
b)
it will stop the object
c)
it will slow the object
d)
 it will make the object move in a circle
66.
When an unbalanced force acts perpendicular to the direction of motion of a body it will cause
a)
the object to move in a circle
b)
the object to slow down
c)
the object to speed up
d)
the object to maintain a constant velocity
67.
The equation for impulse
a)
Ft = mv - mu
b)
Fnet = ma
c)
Fw = mg
d)
Ft = mu + mv
68.
For a system to be in equilibrium the sum of the forces acting must equal zero and 
a)
clockwise moments = anticlockwise moments
b)
the sum of the velocities must equal zero
c)
the sum of the momentums must equal zero
d)
all work must be done around a pivot point
69.
The type of force here is
a)
electrostatic attractive
b)
electrostatic repulsive
c)
magnetic
d)
gravitational
70.
The lines with arrows around the charge indicate the 
a)
electric field
b)
electric force
c)
magnetic field
d)
gravitational field
71.
Electric current is defined by the equation I=Q/t
In words:
a)
rate of flow of charge
b)
ratio of energy to time
c)
energy flow
d)
charge flow
72.
The instrument pictured is used to measure
a)
electric current
b)
electric charge
c)
voltage
d)
resistance
73.
In metal circuits conventional current flows from
a)
positive to negative terminals
b)
negative to positive terminals
c)
both ways
d)
none of these
74.
Electrons move inside metal wires from
a)
negative to positive terminals
b)
positive to negative terminals
c)
both ways
d)
none of these
75.
In electric circuits the emf is
a)
a source of electrical energy
b)
a sink of electrical energy
c)
a force that pushes electrons
d)
a transfer of energy
76.
A fuse protects 
a)
circuits from overheating and catching fire
b)
people from getting electric shocks
c)
transistors from large voltages
d)
all of these
77.
RCDs or circuit breakers protect
a)
circuits from overheating and catching fire
b)
people from getting electric shocks
c)
transistors from large voltages
d)
all of these
78.
Power is defined as
a)
the rate at which energy is transformed
b)
the rate of voltage use
c)
the rate of current use
d)
the total amount of work done per unit charge
79.
The picture shows the components that form a
a)
relay switch
b)
voltmeter
c)
ammeter
d)
battery
80.
The circuit pictured has 2 resistors connected in _________. If each resistor value is 40 Ohms, the total resistance in this case will be ___Ohms.
a)
parallel, 20
b)
series, 20
c)
parallel, 80
d)
series, 
81.
The component pictured is a _______ which allows current to flow one way, in this case to the _______.
a)
diode, left
b)
LED, right
c)
resistor, left
d)
NOT gate, left
82.
The circuit symbol pictured is for a ___________, which stores electric _________ on each plate.
a)
capacitor, charge
b)
LED, charge
c)
cell, power
d)
cell, emf
83.
The symbol for
a)
OR gate
b)
NOR gate
c)
AND gate
d)
NOT gate
84.
The symbol for 
a)
AND gate
b)
OR gate
c)
NAND gate
d)
NOR
85.
The output for this circuit will be
a)
0010
b)
1010
c)
0001
d)
1101
86.
The upper signal is _________ and the lower signal is __________.
a)
analogue, digital
b)
digital, analogue 
c)
wiggly, boxy
d)
audio, visual
87.
Ionising radiation is casues atoms to turn into ions by adding or removing electrons from neutral atoms. Types of ionsing radiation includes:
a)
alpha, beta, gamma
b)
microwaves and T.V. waves
c)
protons and neutrinos
d)
neutrons and infra-red waves
88.
Even when a radioactive source is not placed anywhere near the GM tube it still detects some radioactivity. This is due to 
a)
malfunction
b)
background radiation
c)
the weather 
d)
humidity
89.
Alpha paticles
a)
have a charge of 2+
b)
are made from 4 neutrons
c)
are the nucleus of a hydrogen
d)
all of these
90.
Gamma radiation
a)
is part of the EM spectrum
b)
has no mass
c)
is the least ionising radiation
d)
all of these
91.

Due to their charges alpha, beta and gamma radiations deflect in different ways when entering an electric field. In this case

a)

red = beta

b)

yellow = gamma

c)

blue = alpha

d)

blue = beta

92.
Due to their charges alpha, beta and gamma radiations deflect in different ways when entering a magnetic field. In this case the magnetic field is directed out of the screen, and 
a)
blue = alpha
b)
red = beta
c)
yellow = gamma
d)
all of these are correct
93.
According to the graph the half life indicated is about
a)
3.5
b)
3.0
c)
8.0
d)
7.5
94.
The definition of radioactive half life is
a)
the time taken for the activity of a sample to halve
b)
the time taken for half the number of nuclei in a sample to decay
c)
the time taken for the received count rate of a sample to halve
d)
all of these are correct
95.

A radioisotope has an initial activity of 34 000 Bq. What will the activity be after 4 half lives have passed?

a)

2125 Bq

b)

4250 Bq

c)

1062.5 Bq

d)

8500 Bq

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