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Hard Physics Questions - Physics Edexcel IGCSE

Total questions: 51

Worksheet time: 27mins

Name
Class
Date
1.

Define "a pole of a magnet"

a)

Where the magnetic forces are strongest.

b)

One end of a magnet - either north or south

c)

The part of a magnet where magnetic field lines come from

2.

Describe what is meant by the ‘direction’ of a magnetic field at a point

a)

The direction of the force that would act on a north pole placed at that point.

b)

The opposite way to which the arrows point

c)

The direction of the force that would act on a south pole placed at that point.

d)

The way in which the field lines go

3.

The force experienced by current-carrying wires in magnetic fields is caused by...

a)

The Doppler effect

b)

The motor effect

c)

the current effect

d)

the Primakoff effect

4.

What are the two names for the number of protons in an atom?

a)

proton number

b)

atomic number

c)

nucleon number

d)

mass number

e)

aton number

5.

What are the two names for the number of protons and neutrons in an atom?

a)

proton number

b)

atomic number

c)

nucleon number

d)

mass number

e)

Protron number

6.

What is the SI unit of radioactivity?

a)

Hertz (Hz)

b)

Becquerel (Bq)

c)

joules per coulomb (J/C)

d)

joules per second (J/s)

7.

isotopes tend to be...

a)

more stable

b)

more unstable

8.

Define radioactive activity

a)

the rate at which unstable nuclei decay

b)

the rate at which radioactive emissions are detected

9.

Define count rate

a)

the rate at which unstable nuclei decay

b)

the rate at which radioactive emissions are detected

10.

Why are metals good conductors?

a)

They have a sea of delocalised electrons that are free to move.

b)

They are magnetic

c)

Because electricity flows through them well.

d)

Because they vibrate at a particular frequency.

11.

Which frequency is ultrasound?

a)

Above 20,000 Hz

b)

20 Hz

c)

5,000 Hz

d)

Under 50 Hz

12.

What is the average speed of sound in air?

a)

320 to 340 m/s

b)

200-210 m/s

c)

14-21 m/s

d)

7800-8200 m/s

13.

What is 1 Volt?

a)

1 Joule/Coulomb

b)

1 Joule/second

c)

1 Coulomb/second

d)

1 Amp/Coulomb

14.

What is 1 Watt?

a)

1 Joule/second

b)

1 Joule/Coulomb

c)

1 Coulomb/second

d)

1 Amp/second

15.

What is 1 Amp?

a)

1 Joule/second

b)

1 Joule/Coulomb

c)

1 Coulomb/second

d)

1 Volt/second

16.

What is 1 Becquerel?

a)

1 nucleus decaying /second

b)

1 Joule/coulomb

c)

1 Isotope/nucleus

d)

1 Metre/hour

17.

A dynamo produces..

a)

A.C. current

b)

D.C. current

18.

A generator produces..

a)

A.C. current

b)

D.C. current

19.

What is the human range of hearing?

(a)  

20.

What is an alpha particle?

a)

A helium nuclei

b)

A hydrogen nuclei

c)

An iron nuclei

d)

An electron

21.

What is a beta particle?

a)

An electron

b)

A helium nuclei

c)

A hydrogen nuclei

d)

A very short wave electromagnetic wave

22.

What is a gamma ray?

a)

An electron

b)

A helium nuclei

c)

A hydrogen nuclei

d)

A very short wave electromagnetic wave

23.

Describe alpha decay

a)

Strongly ionising

b)

Weakly ionising

24.

Describe alpha decay

a)

Can penetrate a long way

b)

do not penetrate very far

25.

Describe alpha decay

a)

Deflected by electric and magnetic fields

b)

Electric and magnetic fields have no effect on them.

26.

Alpha decay decreases the atomic number by...

a)

1

b)

2

c)

3

d)

4

e)

0

27.

Alpha decay decreases the mass number by...

a)

1

b)

2

c)

3

d)

4

e)

0

28.

Beta decay causes the mass number to increase by...

a)

0

b)

1

c)

2

d)

4

e)

3

29.

Beta decay causes the atomic number to increase by...

a)

0

b)

1

c)

2

d)

4

e)

3

30.

Alpha particles move

a)

fast

b)

very fast

c)

slowly

31.

Beta particles move

a)

fast

b)

very fast

c)

slowly

32.

Gamma rays move

a)

fast

b)

very fast

c)

slowly

33.

Beta particles are...

a)

Weakly ionising

b)

Strongly ionising

c)

Moderately ionising

34.

Beta particles are...

a)

Weakly penetrating

b)

Strongly penetrating

c)

Moderately penetrating

35.

Gamma rays are...

a)

Weakly penetrating

b)

Strongly penetrating

c)

Moderately penetrating

36.

Gamma rays are...

a)

Weakly ionising

b)

Strongly ionising

c)

Moderately ionising

37.

Beta particles can be deflected by electric and magnetic fields

a)

True

b)

False

38.

Gamma rays can be deflected by electric and magnetic fields

a)

True

b)

False

39.

Do gamma rays have mass?

a)

Yes

b)

No

40.

Gamma decay causes the atomic number to increase by...

a)

0

b)

1

c)

2

d)

4

e)

3

41.

Gamma decay causes the mass number to increase by...

a)

0

b)

1

c)

2

d)

4

e)

3

42.

Gamma rays are emitted by themselves

a)

True

b)

False

43.

When are gamma rays emitted?

a)

Only after alpha decay

b)

Only after beta decay

c)

Only before neutron decay

d)

By themselves

e)

After alpha or beta decay

44.

Neutron decay decreases the mass number by

a)

0

b)

1

c)

2

d)

3

e)

4

45.

Neutron decay decreases the atomic number by

a)

0

b)

1

c)

2

d)

3

e)

4

46.

What is weight measured with?

a)

Scales

b)

A balance

47.

What is mass measured with?

a)

Scales

b)

A balance

48.

What is gravitational field strength measured in?

a)

N

b)

N/kg

c)

kg

d)

m/s

49.

What should control rods be made of?

a)

boron

b)

cadmium

c)

graphite

d)

water

e)

concrete

50.

What should the moderator be made of?

a)

boron

b)

cadmium

c)

graphite

d)

water

e)

concrete

51.

What should the shielding be made of?

a)

boron

b)

cadmium

c)

graphite

d)

thick lead

e)

thick concrete

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