Font size
WorksheetsEnd of the Month Revision Test
Total questions: 91
Worksheet time: 1hrs 18mins
A radioactive source emits radiation that can pass through a sheet of paper but not through thick aluminium. What does this show about the radiation?
It is alpha-particles.
It is beta-particles.
It is gamma-rays.
It is a mixture of alpha-particles and gamma-rays
Which line in the table describes the nature of an alpha-particle and a gamma-ray?
A
B
C
D
A radioactive nucleus R decays with the emission of a β-particle as shown:
Which equation is correct?
x = p
y = q
p = x – 1
q = y – 1
A radioactive nucleus R decays with the emission of a β-particle as shown:
Which equation is correct?
x = p
y = q
p = x – 1
q = y – 1
How many nucleons are in a nucleus of ?
19
20
39
58
Which type of radiation has the greatest ionising effect?
α-particles
β-particles
γ-rays
all have the same ionising effect
An unstable nucleus has 145 neutrons and 92 protons. It emits a β-particle.
How many neutrons and protons does the nucleus have after emitting the β-particle?
A
B
C
D
Which particles are found in the nucleus of an atom?
neutrons and protons only
neutrons only
protons and electrons only
protons, electrons and neutrons
A Geiger counter detects radiation from radioactive sources.
A radioactive source is inside a thick aluminium container as shown:
Which type of radiation from this source is being detected?
α-particles
β-particles
γ-rays
radio waves
A radioactive isotope has a half-life of 2 minutes. What can be deduced from this statement?
After 2 minutes, half of the isotope remains.
After 1 minute, half of the isotope remains.
After 4 minutes, half of the isotope remains.
After 4 minutes, none of the isotope remains.
A freshly made sample of radioactive material gives a count rate of 8000 counts per minute. After
20 days, it gives a count rate of 500 counts per minute.
What is the half-life of the material?
4.0 days
5.0 days
20 days
80 days
What occurs in the decay of a radioactive nucleus?
The nucleus absorbs another nucleus.
The nucleus absorbs at least one form of radiation.
The nucleus always splits into two equal fragments.
The nucleus emits at least one form of radiation.
In nuclear ……1……, hydrogen nuclei ……2…… to form helium nuclei, releasing energy.
Which words correctly complete gaps 1 and 2?
A
B
C
D
If the mass number of an atom is 24 and its atomic number is 12, it has
12 protons.
12 neutrons.
12 electrons.
Fusion occurs when nuclei
split
combine
mutate
gain energy
Which of these particles are the nucleus of a helium atom
alpha particles
beta particles
gamma rays
alpha decay
Which of these particles are the nucleus of a helium atom
alpha particles
beta particles
gamma rays
alpha decay
The weakest radioactive emission is
alpha
beta
gamma
Which particles are negatively charged
alpha
beta
gamma
Which radiation carries no charge
alpha
beta
gamma
Nitrogen-13 has a half-life of 15 minutes. How much of a 320 gram sample of N-13 would remain after decaying 45 minutes?
20g
40g
60g
80g
Radon has a half-life of 4 days. How long does it take for 16 grams of radon to be reduced to 2 grams of radon?
6 days
9 days
10 days
12 days
Alpha particles are nuclei are
Helium
Iron
Carbon
Uranium
The amount of time it takes for half of the nuclei in a sample to undergo radioactive decay is
nuclear stability
nuclear instability
beta decay
half life
A nuclear chain reaction occurs when
Three neutrons are absorbed by other uranium-235 nuclei and continue the reaction repeatedly.
Three neutrons are released from protons of radioactive elements and the reaction continues repeatedly.
An atomic bomb releases enough energy to start a hydrogen bomb.
Nuclei of smaller atoms join together to form larger nuclei
Lighter nuclei are produced from heavier nuclei by the process of
mass energy
fusion
magnetism
fission
The three types of nuclear radiation in order of decreasing penetrating power are
alpha, beta, gamma
alpha, gamma, beta
beta, alpha, gamma
gamma, alpha, beta
A certain radioactive sample has a half life of 2 years. After 6 years, how much of the sample is left?
1/2
1/3
1/16
1/8
What is the atomic number of this isotope?
131
53
184
78
What is the mass number of this isotope?
131
53
184
78
How many protons does this isotope have?
131
53
184
78
How many neutrons does this isotope have?
131
53
184
78
What is the name of this isotope?
Iodine-131
Iodine-53
Iodine-184
Iodine-78
An alpha particle is made up of
2 protons and 4 neutrons
1 proton and 1 neutron
2 protons and 2 neutrons
4 protons and 2 neutrons
Which type of nuclear radiation can be stopped by a sheet of paper?
Alpha
Beta
Gamma
Which type of nuclear radiation can be stopped 60 cm of aluminum or 7 cm of lead?
Alpha
Beta
Gamma
When a substance undergoes beta decay
The atomic number increases by 1
The atomic number decreases by 2
The atomic number does not change
A radioactive shoe is wrapped in 3mm of aluminum foil but radiation is still detected. What must be true?
The shoe emits alpha radiation
The shoe emits beta radiation
The shoe emits gamma radiation
Which type of nuclear decay did Radon-198 go through?
alpha decay
beta decay
gamma decay
A sample of Radium-228 decays from 100g to 12.5g. How many half lives did it experience?
1
2
3
4
Which of the following IS NOT a behavior that light waves can undergo when they reach a boundary between two media?
stopping at the edge of the boundary
reflection off of the boundary
transmission into the boundary
refraction through the boundary
Reflection is to bouncing as refraction is to:
bending.
breaking.
dissipating.
halting.
This drawing illustrates the ________________________ of a light wave.
refraction
reflection
diffraction
dispersion
When a light ray strikes a smooth, flat surface, what is the relationship between the angle of incidence and the angle of reflection?
They are equal.
The angle of incidence is twice that of the angle of reflection.
The angle of reflection is twice that of the angle of incidence.
They combine to add up to 180o.
In this diagram, which is the angle of incidence?
Angle A
Angle B
Angle C
Angle D
The way that a surface reflects light depends on its texture. Rough surfaces such as cloth and wood tend to scatter light, reflecting it in many different directions. This type of reflection is called:
diffuse reflection.
specular reflection.
incident reflection.
distorted reflection.
Objects that generate their own light are called:
luminous objects.
illuminated objects.
shiny objects.
reflective objects.
Humans generate light in the visible region of the electromagnetic spectrum.
True
False
Light that is reflected or transmitted through certain media so that all vibrations are restricted to a single plane is called:
polarized light.
ambient light.
direct light.
indirect light.
When light rays strike a rough surface, they are:
scattered.
focused.
absorbed.
refracted.
An image projected onto a screen at a point where light rays meet is a:
real image
diffuse image
virtual image
refracted image
The index of refraction is best described as a material’s ability to:
reflect light
bend light
scatter light
diffuse light
Bending of light as it moves from one material to another is known as
reflection
refraction
dispersion
diffusion
What part of the EM spectrum travels fastest?
microwaves
visible light
x-rays
all travel at "c"
An electromagnetic wave transmits
energy but not matter
matter but not energy
both matter and energy
neither energy nor matter
The distance from the center of the lens to the principal foci (or focal points) of the lens.
real
virtual
image height
focal length
The incident angle equals the reflected angle is called the law of __________________.
refraction
reflection
image
lenses
A law stating that the ratio of the sines of the angles of incidence and refraction of a wave are constant when it passes between two given media.
law of reflection
law of refraction
snails law
Snell's law
Which EM wave has the lowest energy?
Gamma waves
UV waves
Microwaves
Radio waves
Filtering out all but one vibrational plane of light is called
interference
diffraction
refraction
polarization
When light enters a new medium
it's speed changes
it's frequency changes
it's index of refraction changes
A ____ is a discrete, quantized bundle of energy
Photoelectric effect
Photon
Quantized
Proton
Wave -particle duality is supported by...
electrons behaving as particles with ordinary matter
electrons behaving as waves when travelling through space
the photo electric effect
all of the above
What does particle- wave duality mean?
Both Light and Matter have particle-like and wavelike properties at the same time
Particles and waves both work on objects
The photoelectric effect helped to explain how light was light a
particle
wave
This guy helped to explain the photoelectric effect with the equation E=hf and got the Nobel prize for it.
Plank
Einstein
Heisenberg
Young
This guy created the famous slit experiment and saw the interference patterns behaved just like waves
Einstein
Young
Maxwell
Heisenberg
Radio waves and _______ are used in communication
Microwaves
Gamma rays
Visible light
Ultraviolet
Which of the following describes a motor?
It creates mechanical energy.
It doesn't need an electrical source to function.
It doesn't follow the Law of Conservation of Energy.
It converts electrical energy into mechanical energy.
When a conductor is moved to cut through the magnetic flux, an _______________ is produced.
induced current
electromotive force
electromagnetic induction
internal resistance
