Font size
WorksheetsPhysics Chapter 2 4 & 5
Total questions: 102
Worksheet time: 51mins
All of the following are true of the substance glucose (C6H12O6) EXCEPT:
It is a compound.
It consists of three elements.
The smallest subdivision of the molecule is glucose.
It may be broken down into one atom of glucose.
If an electron is gained or lost from an atom, that atom becomes
Radioactive
An ion
A new element
An isotope
All of the following are energy forms EXCEPT
Sound
Thermal
Electrical
Nuclear
In the excitation process, electrons in an atom are moved to a/n ____energy state.
Lower
Ionization
Higher
Incomplete
All of the following are true of electromagnetic energies EXCEPT
The relationship between frequency and wavelength is direct and proportional
They possess both wave and particle characteristics.
They are arranged in an orderly spectrum according to frequency and wavelength.
They are illustrated as sinusoidal waves.
Carbon has an atomic number of 6. One of its isotopes has a mass number of 14. The number of neutrons in this isotope is
8
6
14
19
An electron is ____ charged and has a mass of ____amu(s)
Negatively; 1.673 x 10 (-27)
Negatively; 0.000548
Neutral; 1
Positively; 0.000548
When comparing iodine (Z=53) with barium (Z=56)
Barium has fewer protons.
Barium has a lower k-shell binding energy.
Iodine has five (5) orbitals with electrons.
Iodine has more neutrons.
An atom has an atomic number of 18 and a mass number of 38. Letting P = the number off protons and N = the number of neutrons, which of the following atoms is the isotope of this atom?
P = 18, N = 21
P = 20, N = 18
P = 18, N = 20
None of the above
In a vacuum, electromagnetic radiation
has a velocity equal to the speed of light.
Causes ionizations of air molecules.
Is altered by a strong magnetic field.
X-Ray energy may be bent by a crystalline lens.
Which of the following is NOT A BASIC CHARACTERISTIC of the wave equation?
Frequency
Velocity
Wavelength
Energy
Calculate the velocity of red light with a wavelength of approximately 4.0 nm (nm = 10 (-9))
7.5 x 10 (18) nm/sec
1.2 x 10 (-17) nm/sec
1.2 x 10(1) nm/sec
7.5 x 10(-1) nm/sec
An isotope of boron has 5 protons and 6 neutrons. The atomic number of boron is
5
10
11
6
A period in the periodic table is
Represented by a column
The principal quantum number.
Vertical.
Determined by the valence electrons.
The maximum number of electrons found in any energy level (shell) at any point in time is calculated by the formula
W = F x D
2n(2)
N = Z x e(2)
N = amu x Z
Electromagnetic radiation with a frequency of 2,000 hertz would have a wavelength of
1/2,000 cm
1.5 x 10(7) cm
1.5 x 10(-7) cm
cannot be determined
Isotopes have ____ mass numbers and ____ atomic numbers.
different; the same
the same; different
the same; the same
different; different
If the photon frequency of electromagnetic radiation is increased tenfold, then the
Wavelength will decrease to 1/10
Velocity will increase times 10
Wavelength will decrease to 1/10
Velocity will decrease to 10
The unit of mass is the
cc
liter
kg
megabyte
If the frequency of a wave is 1,000 hertz and is traveling at 50,000 m/sec, then its wavelength is
50m
0.5m
5m
0.05m
The atomic number is the number of ____ contained in the nucleus.
Electrons
Positrons
Protons
Neutrons
The maximum number of electrons in a period with a principal quantum number of 4 is
32
18
8
6
The nuclear components that distinguish one element from another are the
Beta particles
Protons
Gamma particles
Neutrons
The orderly arrangement of elements in the periodic table is based upon
Atomic number
Neutron number
Mass number
Atomic weights
The sum of protons and neutrons in a nucleus is called the
Atomic weight
Atomic mass unit
Quantum number
Mass number
Quarks may behave according to the ____ theory
Electromagnetic
Octet
String
Quantum
Groups of periodic table
Represent elements with the same outer electron configuration
Represent elements with the same atomic density
All have the same electron binding energies
are horizontal
Photon wavelength is
Is not related to frequency
Directly proportional to photon frequency
Inversely proportional to photon frequency
Inversely proportional to photon velocity
An element with an atomic number of 22 has how many electrons in the second principal quantum number level (L shell)?
22
2
10
8
Entirely concentrated in the nucleus
atomic mass
binding energy
atomic number
neutron
Increases as the number of electrons and protons increases
proton
neutron
kinetic energy
binding energy
A change in the number of these changes the identity of the element
Electron
Neutron
Proton
Isotope
Possesses a negative charge and minute mass
Neutron
Kinetic energy
Atomic mass
Electron
A gain or loss of this atomic particle creates an isotope.
Electron
Neutron
Kinetic energy
Isotope
Electrons moving around in specific orbitals demonstrate this energy
Neutron
Electron
Binding energy
Kinetic energy
The transference of energy to an atom
Excitation
Lambda
Velocity
Gamma Rays
Can be long wavelengths in kilometers
Radio waves
Lambda
Velocity
Amplitude
An expression of wavelength
Lambda
Amplitude
Gamma rays
Velocity
The product of frequency and wavelength
Velocity
Gamma rays
Radio waves
Excitation
Expressed as the height of the wave
Amplitude
Gamma rays
Lambda
Radio waves
Highly penetrating based upon frequency
Gamma rays
Velocity
Lambda
Excitation
According to the "rule of octets"
The valence shell is chemically inert.
Both A and C
Eight energy levels have electrons
Eight protons occupy the outermost shell
Elements having the same chemical characteristics
Families (groups)
Iodine
Valence
Lead
Its K-shell binding energy is -33.17 keV
Iodine
Lead
Barium
Periods
It is determined by the number of electrons in the outermost shell of an atom.
Valence
Periods
Barium
Lead
It has a mass number of 207
Lead
Periods
Barium
Iodine
Elements having the same principal quantum number are in this order
Periods
Barium
Iodine
Valence
An "L" to "K" transition would yield 31.45 keV of energy
Barium
Periods
Valence
Families (groups)
The smallest unit of electrical charge is the ____
Neutrino
Electron
Proton
Neutron
Electrification occurs through the movement of ____
Protons only
Electrons and neutrons
Protons and electrons
Electrons only
Like charges ____ and online charges ____
Attract; repel
Repel; repel
Attract; attract
Repel; attract
Electrostatic force is ____ proportional to the distance between charges and ____ proportional to the product of the charges.
Directly; directly
Directly; inversely
Inversely; inversely
Inversely; directly
The charges on an electrified object are distributed ____
On the topside of the object
In the center of the object
Evenly throughout the object
On the side nearest the charge
On the surface of an electrified object, the charges concentrate on the ____
Smoothest curvatures
Underside
Sharpest curves
Top side
A ---- is a source of direct current.
Generator
Spark
Wall socket
Battery
What is the unit of electric potential?
Ohm
Volt
Amp
Watt
An electric potential applied to a conductor produces a(n)____
Magnetic field
Electric insulator and conductor
Electric current and a magnetic field
Electric current
An alternating (AC) current is represented by a ____ line.
Vertical
Horizontal
Sinusoidal
Desceding
A ____ uses direct current.
Hair dryer
Toaster
Microwave
Flashlight
Alternating current is produced by a ____
Capacitor
Battery
Semiconductor
Generator
What is Ohm's law?
I = V/R
V = I/R
R = VI
I = VR
A charge particle in motion creates a(n) _____
Positive charge
Negative charge
Magnetic field
Electrostatic charge
Electrical power is measured in ____
Volts
Watts
Amperes
Coulombs
Rubber and glass are ____
Semiconductors
Insulators
Superconductors
Conductors
The rotation of electrons on their axis is the property called ____
Electron spin
Magnetic induction
Unified field theory
Magnetic force
When a group of dipoles are aligned, they create _____
A North Pole
A magnetic domain
Paramagnetic material
Magnetic resonance
In the United States, alternating current goes through a complete cycle every ____ second.
1/60
1/30
1/120
1/100
What is the SI unit of magnetic field strength?
Dipole
Ohm
Tesla
Ampere
A charge would lose most of its energy when it passes through a
Battery
Generator
Resistor
All of the above
A current of 2 ampers and a resistance of 8 ohms require what voltage in a series circuit?
16 volts
1/4 volts
1/16 volt
4 volts
An ampere is
Coulomb/sec
Ohm/volt
(volt)(ohm)
(coulomb)(sec)
Electric insulators
Consist of materials such as silicon
Inhibit movement of electrical charge
Permit movement of electrical charge
Convert electrical energy into heat
Electrical potential is measured in
Coulombs
Joules
Ohms
Volts
If a DC circuit is
In parallel, the voltages are equal for all paths of the circuit.
In series, the currents are different for each component (e.g., resistors)
In series, the voltages are the same for each component.
In parallel, the currents are equal for all paths of the circuit.
If the total resistance in a circuit is 9 ohms and the voltage is 3 volts, the current is
3 amperes
1/3 ampere
1/27 ampere
27 amperes
In a battery circuit with several resistors of different values connected in series,
The power dissipated through each resistor is the same.
The voltage drop is the same across all the resistors.
None of the above.
The current through each resistor is different.
In a parallel circuit,
Ohm's law does not apply.
As more resistors are added total resistance increases.
Total current flow is equal across its parallel branches.
The voltage is equal across all branches of the circuit.
Ohm's law is mathematically described as
R = V/I
L = -V/It
V = I(2)R
C = Q/V
Resistance is
the opposition to the flow of electrons
measured in Farads
the opposition to the generation of electromotive force
measured in amperes
The milliampere (mA) is a unit of
current
potential difference
EMF
Voltage
The resistance in a wire decreases as its
surface area decreases
length increases
temperature increases
diameter increases
The unit of electrical power is the
Ampere
Volt
Watt
Joule
The four properties of photons are ____, ____, ____ and ____.
size, shape, spin, mass
refraction, velocity, spin, amplitude
frequency, mass, amplitude, wavelength
frequency, wavelength, velocity, amplitude
The smallest quantity of any type of electromagnetic radiation is a(n) ____.
electron
quark
neutrino
photon
What is the velocity of all electromagnetic radiation?
4 x 10(3) m/s
3 x 10(8) m/s
8 x 10(3) m/s
2 x 10(8) m/s
The rate of rise and fall of a sine wave is called its ____.
wavelength
frequency
amplitude
velocity
A hertz (Hz) is equal to ____ cycle(s) per second.
102
1
10
103
What is electromagnetic wave equation?
c = f – λ
c = fλ
c = fv
c = f/λ
The ____ of electromagnetic radiation is constant.
wavelength
amplitude
velocity
frequency
If the wavelength of a beam of electromagnetic radiation increases by a factor of 2, then its frequency must ____.
decrease by half
double
increase four times
remain constant
The intensity of radiation ____ in ____ proportion to the square of the distance of the object from the source.
decreases, inverse
increases, inverse
decreases, direct
increases, direct
The reduction of radiation intensity due to scattering and absorption is called ____.
dispersion
reflection
attenuation
refraction
The intensity of radiation on an object is reduced with distance because the radiation ____.
reduces its velocity
increases in wavelength
loses its energy
is spread out over a greater area
If the intensity of light from a flashlight is 4 millilumens (mlm) at a distance of 3 feet, what will the intensity be at 6 feet?
16 mlm
0.4 mlm
1 mlm
2 mlm
The diagnostic range of x-ray energy is ____.
200 to 300 kVp
30 to 150 kVp
300 to 1000 kVp
over 1 MV
The energy of a photon is directly proportional to its ____.
velocity
wavelength
frequency
amplitude
The mass equivalent of a 100 KeV photon of radiation can be calculated using the ____.
relativity formula
equivalent Planck equation
Planck quantum equation
inverse square formula
X - rays are usually identified by their ____.
energy
wavelength
hertz
velocity
The lowest energy range of the electromagnetic spectrum is ____.
gamma rays
radio waves
microwaves
sound waves
Gamma rays are produced in the ____ of the atom.
inner electron shell
nucleus
outer electron shell
k-shell
Photons tend to interact with matter ____ their wavelength.
Unequal in size to
equal in size to
larger in size than
smaller in size than
Photons with the heighest frequencies have the ____.
highest velocity
lowest energy
shortest wavelengths
longest wavelengths
