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Radiation Production & Characteristics - Finals

Total questions: 122

Worksheet time: 2hrs 46mins

Name
Class
Date
1.

Match the following terms:

a)

Earth, Water, Air and Firs

1.

Greek Atom

b)

Eye and hook Affair

2.

Dalton Atom

c)

Plum Pudding

3.

Thomson Atom

d)

Miniature Solar System

4.

Bohr Atom

2.

The fundamental particles of an atom are the following except

a)

Electron

b)

Proton

c)

Neutron

d)

Nucleus

3.

On the basis of Rutherford's Model of an atom, which sub-atomic particle is present in the nucleus of an atom.

a)

proton and electron

b)

neutron and electron

c)

proton and neutron

d)

proton only

4.

if the first and second energy levels of an atom are full, then what would be the total number of electrons in the atom?

a)

6

b)

8

c)

10

d)

18

5.

Which atomic model is proposed by Schrodinger?

a)

nuclear model

b)

planetary model

c)

raisin bread model

d)

quantum mechanical model

6.

The symbol "n" in the Bohr theory of atomic structure refers to

a)

the energy of electron

b)

the total energy of the atom

c)

the number of electron in an energy level

d)

the orbit in which an electron is found

7.

Who proposed the probability that electrons will be found in certain locations around the nucleus of an atom?

a)

Neils Bohr

b)

Erwin Schrodinger

c)

Ernest Rutherford

d)

J.J. Thomson

8.

Which of the following statements is NOT true of the atomic model of Bohr?

a)

The hydrogen is made up of a positively charged nucleus

b)

The electron revolves around the nucleus in a circular orbit

c)

The energy of the electron in a given orbit is not fixed

d)

An electron can absorb or emit a quantity of radiation

9.

Orbital is a region in an atom where electron can be found.

a)

TRUE

b)

FALSE

10.

An electron can absorb energy when it jumps into a higher energy level.

a)

TRUE

b)

FALSE

11.

An electron can emit energy when it jumps to a higher energy level.

a)

TRUE

b)

FALSE

12.

Filling of electrons in an atom starts from a low energy level to the highest energy level.

a)

TRUE

b)

FALSE

13.

What occurs when an electron moves from high energy level to a low one?

a)

Another electron goes from a low energy level to a high one

b)

The atom moves faster

c)

Colored light is given off

d)

This process is not possible

14.

How are elements different from atoms?

a)

Elements are made out of atoms

b)

Atoms are made out of elements

c)

Elements are made out of molecules

d)

Molecules are made out of atoms.

15.
Two or more atoms chemically bonded together are called a
a)
atom
b)
element
c)
molecule
d)
mixture
16.

How many hydrogen atoms are there in a water molecule? H20

a)

0

b)

1

c)

2

d)

3

17.
Elements are made of 
a)
many types of atoms 
b)
the periodic table
c)
one type of atom 
d)
molecules 
18.
How many atoms/elements are in CaCO3?
a)
3
b)
4
c)
5
d)
6
19.
How many atoms/elements are in NO2?
a)
1
b)
2
c)
3
d)
4
20.
Substance made of two or more different elements that chemically combine. 
a)
Atom
b)
Element
c)
Compound
d)
Proton
21.

The number of atoms present in a molecule of an element is know as

a)

Valency

b)

Formula

c)

Atomicity

d)

Symbol

22.

What electrical charge does a proton have?

a)

a. +2

b)

b. -1

c)

c. +2

d)

d. +1

23.

What mass does a neutron have?

a)

a. 0 amu

b)

b. -1 amu

c)

c. +2 amu

d)

d. 1 amu

24.

Where is most of the mass in an atom located?

a)

a. in the nucleus

b)

b. in the protons

c)

c. in the neutron

d)

d. in the electrons

25.

What are the 3 parts of an atom?

a)

protons, neutrons, and positives

b)

neutrons, negatives, and electrons

c)

positives, negatives, and electrons

d)

protons, neutrons, and electrons

26.

How are crystals grouped?

a)

According to their sizes

b)

According to the elements that make them up

c)

According to their colors

d)

According to the shapes of their crystal lattice

27.

How many elements are in this molecule? C6H12O6C_6H_{12}O_6  

a)

3

b)

24

c)

12

d)

18

28.

In the neutral atom, the number of electrons

a)

is twice the protons

b)

is lower than protons

c)

equals the number of neutrons

d)

equals the number of protons

29.
What is the atomic number of this atom?
a)
9
b)
10
c)
19
d)
27
30.

Atiomic mass number is defined as

a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
31.

ALL atoms of the same element have:

a)

same number of proton

b)

same number of nucleon

c)

different number of neutron

d)

different number of electron

32.

Atomic number is equal to the

a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
33.
What is the atomic number of this atom?
a)
4
b)
5
c)
9
d)
none of the above
34.

This isotope of Titanium has:

​ (a)   protons

22 electrons

​ (b)   neutrons

mass number of ​ (c)  

Choose from the below words
22
26
48
70
47
21
35.

An isotope is an atom of the ​ (a)   element but with a different number of ​ (b)   . This difference causes the ​ (c)   of the atom to change.

Choose from the below words
same
neutrons
mass
different
protons
electrons
charge
atomic number
36.

Match the following

a)

the mass of the atom is found here

1.

nucleus

b)

these are in the nucleus

2.

protons & neutrons

c)

if you change the number of protons you get a different...

3.

element

d)

if you change the number of neutrons you get a different...

4.

mass

e)

an isotope has the same number of protons but a different number of...

5.

neutrons

37.

Label the number of protons:

A
B
C
38.

Label the number that is protons and neutrons added together:

A
B
C
39.

An atom of Aluminum-27 has:

​ (a)   protons

​ (b)   neutrons

a mass number of ​ (c)  

Choose from the below words
13
14
27
15
12
28
26
40.
Question Image

Match the following

a)

number of protons & electrons

1.

18

b)

number of neutrons

2.

22

c)

mass number

3.

40

41.

What is the mass number of an atom that has 52 protons, 52 electrons, and 76 neutrons?

(a)  

42.

Atoms of same elements having same atomic number is called-

a)

Isotone

b)

Isotope

c)

Isobar

d)

Isodiapher

43.

Atoms of different elements have same neutrons is called-

a)

Isotope

b)

Isobar

c)

Isotone

d)

Isodiapher

44.

¹⁴ N = In this atom, how many neutron are there?

⁷

a)

8

b)

7

c)

2

d)

14

45.

Rutherford used ________________ foil for his experiment.

a)

Silver

b)

Gold

c)

Aluminium

d)

Gallium

46.

If an excited electron is returning to its orbit by multistep, it will releas some (a)   in the orbits on which it has steped.

47.

Who was the first person to say that "Atoms are the smallest part of a substance or thing".

a)

Kanad

b)

Dalton

c)

Democretus

48.

Atoms with different mass number and atomic numbers but have the same number of neutrons in the nucleus is

a)

isotope

b)

isotone

c)

isobar

d)

isomer

49.

Radiation that has enough energy to remove an electron from shell causes

a)

ionization

b)

excitation

c)

absorption

d)

transmission

50.

Any process where light photons are generated is known as luminescence.

a)

true

b)

false

51.
What is the longest wavelength in the spectrum?
a)
Red
b)
Gamma Waves
c)
Radio waves
d)
X-Ray
52.
Which wave has the highest frequency?
a)
Radio Wave
b)
Sound Wave
c)
Gamma Wave
d)

X-ray

53.

Which of these is not an electromagnetic wave?

a)

Ultrasound

b)

Ultraviolet

c)

Infrared

54.

Which word describes the process of giving out radiation?

a)

Absorption

b)

Emission

c)

Transmission

d)

Conduction

55.

Which colour is the best absorber of radiation?

a)

White

b)

Grey

c)

Black

d)

Red

56.

Father of Radioactivity

a)

Antoine Henri Becquerel

b)

Pierre Currie

c)

Marie Currie

d)

Paul Ulrich Villard

e)

Ernest Rutherford

57.
What makes something radioactive?
a)
elements with an atomic number above 81
b)
an unstable nucleus
c)
contaminated sewage
d)
It decays over time
58.

Alpha particles have...

a)

positive charge

b)

negative charge

c)

no charge

d)

radioactive charge

59.
Isotopes have the same number of protons and...
a)
neutrons
b)
electrons
c)
atoms
d)
radioactivity
60.
What is the unit of exposure to radioactivity?
a)
Newtons
b)
rad
c)
Gamma rays
d)
rem
61.
Gamma particles have....
a)
positive charge
b)
negative charge
c)
neutral charge
d)
no charge
62.
Beta particles are...
a)
negatively charged
b)
no charge
c)
back at it again with the white vans
d)
positively charged
63.

__________ is an atom that has an unstable nucleus and undergoes radioactive decay?

a)

Radioactive Source

b)
Radioactivity
c)
Radioisotopes
d)

Radiofrequency

64.


Marie Curie discovered

a)

Polonium

b)

Radium

c)

coined the term 'radioactivity'.

d)

Polonium and Radium only

e)

All of the above

65.
This particle determines what element you have - the elements identity.
a)
electron
b)
proton
c)
neutron
d)
valence shell
66.

An isotope of an element has the same number of _________, but a different number of _________.

a)

Protons, electrons

b)

Protons, neutrons

c)

Electrons, neutrons

d)

Neutrons, protons

67.
_______________ is the process by which unstable atoms emit radiation until they become stable.
a)
Radiation
b)
Chemical Reaction
c)
Radioactive Decay
d)
Isotopes
68.

Which type of radiation releases an electron?

a)

Alpha radiation

b)

Beta radiation

c)

Gamma radiation

d)

Theta radiation

69.

What particle is released when an unstable isotope undergoes alpha radiation?

a)

a helium nucleus

b)

an electron

c)

a photon of light

d)

a neutron

70.
Which type(s) of radiation would be affected by a magnet?
a)
alpha only
b)
beta only
c)
alpha and beta
d)
gamma only
71.
Which type of radioactive decay is occurring in this equation? 
a)
Alpha decay
b)
beta decay
c)
gamma decay
d)
positron emission
72.

When the isotope 5024X releases an alpha particle we get another element Y that looks like

a)

5022Y

b)

4622Y

c)

4820Y

d)

5426Y

73.

When the isotope 5024X releases a beta particle we get another element, Y, that looks like

a)

5023Y

b)

4622Y

c)

5025Y

d)

5024Y

74.

What is meant by the statement that 3215P has a half life of 14 days

a)

It takes 7 days to go down to 50% radioactivity each time

b)

It takes 14 days to go down to 50% radioactivity each time

c)

After 14 days it starts to become less radioactive

d)

It takes 14 days to go up by 50% radioactivity each time

75.
The half life of Thorium-234 is 24 days. What fraction of the element remains after 96 days
a)
1/2
b)
1/4
c)
1/8
d)
1/16
76.
The time taken for half of an amount of radioactive atoms to decay.
a)
Nuclear fusion
b)
Full-life
c)
Dead time
d)
Half-life
77.
Gamma rays have a _____ charge
a)
0
b)
+1
c)
-1
d)
+2
78.
Alpha particles have a _____ charge.
a)
+2
b)
0
c)
+1
d)
-1
79.

The term given to unstable radioactive atoms.

a)

Parent

b)

Daughter

c)

Half Life

d)

Igneous

80.

The % of the parent isotope remaining after 3 Half Lives.

a)

50%

b)

25%

c)

12.5%

d)

6.25%

81.

The % of the parent isotope remaining after 1 Half Life.

a)

50%

b)

25%

c)

12.5%

d)

6.25%

82.

The % of the parent isotope remaining after 2 Half Lives.

a)

50%

b)

25%

c)

12.5%

d)

6.25%

83.

The diagram shows 32 atoms

32 of the Red are the parent isotope

0 of the atoms are daughter isotopes

How many half-lives have occurred?

a)

0

b)

1

c)

2

d)

3

84.

The diagram shows 32 atoms.

16 of the Red are parent isotopes

16 of the Green are daughter isotopes

How many half-lives have occurred?

a)

0

b)

1

c)

2

d)

3

85.

The diagram shows 32 atoms

8 of the Red are parent isotopes

24 of the Green are daughter isotopes

How many half-lives have occurred?

a)

0

b)

1

c)

2

d)

3

86.

The half-life of Zn-71 is 2.4 minutes. If one had 100.0 g at the beginning, how many grams would be left after 7.2 minutes has elapsed?

a)

25.0 g

b)

50.0 g

c)

12.5 g

d)

8.5 g

87.

The radioactive isotope Nickel-63 has a half life of 100 years. How much of a 10 gram sample remains after 300 years?

a)

1 gram

b)

1.25 grams

c)

0.50 grams

d)

0.075 grams

88.

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

89.

A sample of Radium-228 decays from 100g to 12.5g. How many half lives did it experience?

a)

1

b)

2

c)

3

d)

4

90.

If 10 mg of iodine 131 is given to a patient, how much is left after 27 days? The half-life of iodine-131 is 9 days.

a)

5.0mg

b)

2.5mg

c)

1.25mg

d)

10mg

91.

Electromagnetic radiation interacts with structures that are similar in size to the wavelength of the radiation.

a)

True

b)

False

92.

What energy interacts with whole atom?

a)

Low-energy X-ray

b)

Moderate-energy X-ray

c)

High-Energy X-ray

d)

Coherent Scattering

93.

What energy interacts with electrons?

a)

Low-energy X-ray

b)

Moderate-energy X-ray

c)

High-Energy X-ray

d)

Coherent Scattering

94.

What energy interacts with nuclei?

a)

Low-energy X-ray

b)

Moderate-energy X-ray

c)

High-Energy X-ray

d)

Coherent Scattering

95.

Coherent Scattering is also called

a)

Classical Scattering

b)

Thompson Scattering

c)

Compton Scattering

d)

Photoelectric Effect

e)

Pair Production

96.

A change in x-ray direction without a change in its energy is a result of

a)

Classical Scattering

b)

Compton Scattering

c)

Photoelectric Effect

d)

Pair Production

e)

Photodisintegration

97.

A change in x-ray direction & reduction of its energy is a result of

a)

Classical Scattering

b)

Compton Scattering

c)

Photoelectric Effect

d)

Pair Production

e)

Photodisintegration

98.

Compton scattering reduces image contrast!

a)

True

b)

False

99.

Total x-ray energy is totally absorbed is a result of

a)

Classical Scattering

b)

Compton Scattering

c)

Photoelectric Effect

d)

Pair Production

e)

Photodisintegration

100.

X-ray disappears & two electrons with opposite charge appear (positron & electron) is a result of

a)

Classical Scattering

b)

Compton Scattering

c)

Photoelectric Effect

d)

Pair Production

e)

Photodisintegration

101.

X-ray is absorbed by the nucleus & nucleon/nuclear fragment is emitted is a result of

a)

Classical Scattering

b)

Compton Scattering

c)

Photoelectric Effect

d)

Pair Production

e)

Photodisintegration

102.

Classical Scattering occurs at

a)

below 10 kEv x-rays

b)

Moderate energy

c)

1.02 MeV x-rays

d)

10 MeV x-rays

103.

Compton Effect/Scattering occurs at

a)

below 10 kEv x-rays

b)

Moderate energy

c)

1.02 MeV x-rays

d)

10 MeV x-rays

104.

Photoelectric Effect occurs at

a)

below 10 kEv x-rays

b)

Moderate energy

c)

1.02 MeV x-rays

d)

10 MeV x-rays

105.

Pair Production occurs at

a)

below 10 kEv x-rays

b)

Moderate energy

c)

1.02 MeV x-rays

d)

10 MeV x-rays

106.

Photodisintegration occurs at

a)

below 10 kEv x-rays

b)

Moderate energy

c)

1.02 MeV x-rays

d)

10 MeV x-rays

107.

In Classical Scattering, Scattered X-ray λ is greater than Incident X-ray λ

a)

True

b)

False

108.

The incident x-ray interacts with a target atom, causing it to become excited is an interaction of

a)

Classical Scattering

b)

Compton Scattering

c)

Photoelectric Effect

d)

Pair Production

e)

Photodisintegration

109.

The incident x-ray interacts with the outer-shell electron & ejects it from the atom is an interaction of

a)

Classical Scattering

b)

Compton Scattering

c)

Photoelectric Effect

d)

Pair Production

e)

Photodisintegration

110.

The incident x-ray interacts with the inner-shell electron is an interaction of

a)

Classical Scattering

b)

Compton Scattering

c)

Photoelectric Effect

d)

Pair Production

e)

Photodisintegration

111.

The incident x-ray interacts with the nuclear force field is an interaction of

a)

Classical Scattering

b)

Compton Scattering

c)

Photoelectric Effect

d)

Pair Production

e)

Photodisintegration

112.

Which of the following does not occur during X-ray Imaging?

a)

Classical Scattering

b)

Compton Scattering

c)

Photoelectric Effect

d)

Pair Production

e)

Photodisintegration

113.

A process wherein the mass of positron & electron is converted to energy is called

a)

Annihilation Radiation

b)

Backscatter Radiation

c)

Image Noise

d)

Differential Absorption

114.

The incident x-ray interacts directly into the nucleus is an interaction of

a)

Classical Scattering

b)

Compton Scattering

c)

Photoelectric Effect

d)

Pair Production

e)

Photodisintegration

115.

X-rays scattered back in the direction of the incident x-ray beam and responsible for the cassette-hinge image is called

a)

Annihilation Radiation

b)

Backscatter Radiation

c)

Image Noise

d)

Differential Absorption

116.

The general graying of an image and reduction of image contrast is called

a)

Annihilation Radiation

b)

Backscatter Radiation

c)

Image Noise

d)

Differential Absorption

117.

Production of Characteristic x-rays is a result of

a)

Classical Scattering

b)

Compton Scattering

c)

Photoelectric Effect

d)

Pair Production

e)

Photodisintegration

118.

Photoelectric Effect is most likely to occur on the following except

a)

With inner-shell electron

b)

With tightly bound electrons

c)

When x-ray energy is just higher than electron binding energy (Eb)

d)

When x-ray energy is lower than electron binding energy (Eb)

119.

Increase in atomic number of absorber has no effect on

a)

Classical Scattering

b)

Compton Scattering

c)

Photoelectric Effect

d)

Pair Production

e)

Photodisintegration

120.

In Compton Scattering, as mass density of absorber increases, a proportional increase in Compton scattering happens.

a)

True

b)

Fasle

121.

The probability of the photoelectric effect is inversely proportional to the fourth power of the x-ray energy (1/E)4 !

a)

True

b)

False

122.

Different degrees of absorption in different tissues is called

a)

Annihilation Radiation

b)

Backscatter Radiation

c)

Image Noise

d)

Differential Absorption

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