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Worksheets26 Nuclear and pParticle Physics
Total questions: 21
Worksheet time: 9mins
What is the approximate size of an atom and nucleus respectively?
10-8 m and 10-11 m
10-10 m and 10-14 m
10-10 m and 10-17 m
10-8 m and 10-12 m
What is the approximate mass of a nucleus of uranium?
10-15 kg
10-20 kg
10-25 kg
10-30 kg
A thin gold foil is bombarded with α-particles as shown.
binding energy of a gold nucleus
energy levels of electrons in gold atoms
size of a gold nucleus
structure of a gold nucleus
Two α-particles with equal energies are fired towards the nucleus of a gold atom. Which diagram best represents their paths?
A
B
C
D
Which conclusion can be drawn from the results of the experiment showing the scattering of α-particles by gold foil?
electrons orbit the atomic nucleus in well-defined paths.
nuclei of different isotopes contain different numbers of neutrons
The atomic nucleus contains protons and neutrons.
The nucleus is very small compared with the sixe of the atom.
In an experiment to investigate the nature of the atom, a very thin gold film was bombarded with α -particles.
What pattern of deflection of the α -particles was observed?
A few α -particles were deflected through angles greater than a right angle.
All α -particles were deflected from their original path.
Most α -particles were deflected through angles greater than a right angle.
No α -particle was deflected through an angle greater than a right angle.
In the α -particle scattering experiment, α -particles are directed towards a thin gold film. Most of the α -particles pass through the film with very little deviation, but about 1 in 8000 is deviated through an angle greater than 90o .
For what do these observations provide evidence?
that gold has several isotopes
that there are α -particles of different types
that there are large spaces between atoms in the gold film.
that nuclei occupy very small volumes within atoms.
A
B
C
D
Which three labels on these diagrams refer to the same kind of radiation?
L, P, X
L, P, Z
M, P, Z
N, Q, X
Which of the following statements concerning gamma rays is/are correct?
1) They can ionise air.
2) They can be deflected by electric fields.
3) They can be deflected by magnetic fields.
1, 2, 3
1, 2 only
2, 3 only
1 only
A nuclear isotope emits radiation which is detected by a Geiger-Muller tube held at a distance of about 10 cm from the radioactive source.
The radiation is stopped completely by a 2 mm thick sheet of lead.
What can be deduced from this information about the emission form the isotope?
It could be alpha and gamma radiation but not gamma radiation.
It could be alpha and beta radiation, but not gamma radiation.
It could be beta and gamma radiation but not alpha radiation.
It could be alpha, beta and gamma
A
B
C
D
Which are the correct descriptions of a γ -ray and a beta particle?
A
B
C
D
A
B
C
D
A
B
C
D
X = Hadrons, Y = electrons and neutrino, Z = neutrons and protons
X = Hadrons, Y =neutrons and protons, Z = electrons and neutrino
X = neutrons and protons, Y = electrons and neutrino; Z = Hadrons
X = electrons and neutrino; Y = Hadrons; Z = neutrons and protons
Which diagram represents the structure of an antineutron?
A
B
C
D
A
B
C
D
Some particles are combination of three quarks.
Which combination of quarks would not result in a particle with a charge of +1.6x10-19C or zero?
up, down, down
up, strange, strange
up, up, down
up, up, up
A
B
C
D
The following particles are each accelerated from rest through the same potential difference.
Which one completes the acceleration with the greatest momentum?
electron
neutron
alpha particle
proton
