60 terms

# Chapters 4,5,6

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Which of the following is a nonrenewable source of energy?
A.
trees
B.
gasoline
C.
wind
D.
ocean currents
B.
gasoline
The amount of work provided from a motor divided by the amount of energy used by the motor is called
A.
entropy
B.
conductivity
C.
capacity
D.
efficiency
D.
efficiency
Considering its thermal properties, which of the following would be the best material for insulating a home against heat loss?
A.
Trapped air
B.
Fiber glass
C.
glass
D.
iron
A.
Trapped air
The transfer of heat by direct atomic or molecular kinetic motion is called
A.
convection
B.
conduction
C.
radiation
D.
infusion
B.
conduction
A wood stove provides most of its heat by
A.
convection
B.
conduction
C.
radiation
D.
infusion
C.
radiation
Thermodynamics is the study of
A.
the mechanics of boiling water
B.
the chemistry of boiling water
C.
the movement of heat
D.
the different temperature measuring scales
C.
the movement of heat
In the Kelvin scale, water boils at

A.
32o
B.
100o
C.
212o
D.
373o
D.
373o
Perpetual energy machines (which continue working forever without the need for an energy source once you get them started) are not allowed by

A.
the first law of thermodynamics
B.
the second law of thermodynamics
C.
the law of gravitation
D.
Newton's Laws of Motion
B.
the second law of thermodynamics
The transfer of heat by the bulk motion of gases or fluids is referred to as
A.
thermal movement
B.
radiation
C.
conduction
D.
convection
D.
convection
A calorie is the amount of heat energy necessary to raise the temperature of one gram of water by one degree

A.
Celsius
B.
Fahrenheit
C.
Kelvin
D.
None of these are correct
A.
Celsius
The measure of the ability of a material to absorb heat is referred to as its
A.
specific convection ability
B.
specific heat capacity
C.
specific conduction ability
D.
specific radiation ability
B.
specific heat capacity
The tendency of ordered isolated systems to naturally become disordered is referred to as

A.
thermal decay
B.
molecular inefficiency
C.
atomic conductivity
D.
entropy
D.
entropy
At which temperature does water freeze in the Kelvin scale?
A.
0o
B.
100o
C.
273o
D.
32o
C.
273o
The Sun transfers most of its heat to Earth by means of
A.
radiation
B.
conduction
C.
convection
D.
infusion
A.
radiation
A forced air heater heats a house through

A.
radiation
B.
conduction
C.
convection
D.
infusion
C.
convection
Evolution does not violate the second law of thermodynamics because
A.
evolution does not happen
B.
the second law does not apply to the Earth
C.
the second law does not apply to living organisms
D.
the Earth is not a closed system
D.
the Earth is not a closed system
The average kinetic energy of the molecules contained in an object is referred to as its
A.
temperature
B.
thermal energy
C.
heat capacity
D.
heat transfer ability
A.
temperature
Water freezes at 0o on the _______ temperature scale.

A.
Celsius
B.
Fahrenheit
C.
Kelvin
D.
English
A.
Celsius
Which of the following statements is not consistent with the second law of thermodynamics?

A.
the evolution of more complicated forms of life on Earth does not annul the second law
B.
no engine is one hundred percent efficient in converting energy to work
C.
heat will not flow spontaneously from a cold body to a hot body
D.
all isolated systems will tend to remain ordered indefinitely
D.
all isolated systems will tend to remain ordered indefinitely
The temperature at which all atomic and molecular kinetic motion ceases is
A.
0o C
B.
0o K
C.
0o F
D.
32o F
B.
0o K
The statement that like charges repel one another, and unlike charges attract one another is captured in

A.
Volta's law
B.
Coulomb's law
C.
Faraday's law
D.
Galvani's law
B.
Coulomb's law
Which of the following men discovered that magnetic phenomena can be produced by electric effects?
A.
Galvani
B.
Coulomb
C.
Volta
D.
Oersted
D.
Oersted
Which of the following men used electrical jolts to induce twitching in muscle tissue?
A.
Galvani
B.
Volta
C.
Maxwell
D.
Coulomb
A.
Galvani
The attraction between electrons and protons is governed by which of the following?
A.
electrical forces
B.
magnetic forces
C.
gravitational forces
D.
nuclear forces
A.
electrical forces
Electrical current is measured in units of
A.
volts
B.
amperes
C.
ohms
D.
coulombs
B.
amperes
The ability of the energy source pushing electrons through a wire to push them is measured as
A.
resistance
B.
current
C.
voltage
D.
amperage
C.
voltage
The higher the resistance in an electrical circuit,
A.
the more electrical energy that is converted into heat
B.
the less electrical energy that is converted into heat
C.
the easier it is for current to pass through the circuit
D.
the greater the efficiency of the circuit
A.
the more electrical energy that is converted into heat
If a loop of wire is spun between the north and south poles of a large magnet,
A.
the loop of wire serves as a source of energy in the system
B.
an electric current is generated in the wire
C.
an electric motor is created
D.
a storage battery is created
B.
an electric current is generated in the wire
The first storage battery was created by
A.
Benjamin Franklin
B.
Charles Coulomb
C.
Luigi Galvani
D.
Alessandro Volta
D.
Alessandro Volta
A device that produces a magnetic field from a moving electrical charge is
A.
a battery
B.
an electric generator
C.
an electromagnet
D.
a dipole
C.
an electromagnet
Objects that lose electrons
A.
have a positive net charge
B.
have a negative net charge
C.
have equal amounts of positive and negative charge
D.
have no net electric charge at all
A.
have a positive net charge
Aurorae on Earth are produced by
A.
lightning in the Earth's atmosphere
B.
chemical reactions between sunlight and the Earth's atmosphere
C.
interactions of charged particles from the Sun with the Earth's atmosphere
D.
reconnections of the Earth's magnetic field lines
C.
interactions of charged particles from the Sun with the Earth's atmosphere
13.
A metallic object that attracts other metallic objects is called

A.
a dipole
B.
a magnet
C.
a resistor
D.
a circuit
B.
a magnet
If we multiply the current in a circuit times its voltage, we can calculate its
A.
electric power
B.
magnetic power
C.
resistance
D.
amperage
A.
electric power
If you sprinkle iron filings around a bar magnet, the characteristic pattern they trace out is called a(n)
A.
direct current
B.
dipole current
C.
electromagnetic field
D.
dipole field
D.
dipole field
The type of electrical current in which charges reverse their direction of motion is called

A.
direct current
B.
alternating current
C.
magnetic current
D.
dipole current
B.
alternating current
A negatively charged object has an abundance of
A.
protons
B.
electrons
C.
neutrons
D.
dipole current
B.
electrons
The flow of electrons from one point to another is called
A.
voltage
B.
resistance
C.
current
D.
magnetism
C.
current
Chemical energy is converted to electrical energy by
A.
a battery
B.
an electromagnet
C.
an electric motor
D.
a compass
A.
a battery
The difference between series circuits and parallel circuits is
A.
the number of light bulbs placed in the circuit
B.
the number of batteries placed in the circuit
C.
the amount of current flowing through the circuit
D.
the number of pathways the current has through the circuit
D.
the number of pathways the current has through the circuit
What happens when two waves from different sources come together at a single point?
A.
interference
B.
reinforcement
C.
absorption
D.
reflection
A.
interference
In order to determine the frequency of an electromagnetic radiation, you would divide the velocity by the
A.
frequency
B.
amplitude
C.
wavelength
D.
hertz rating
C.
wavelength
The speed of light is

A.
100,000 km/s
B.
200,000 km/s
C.
300,000 km/s
D.
400,000 km/s
C.
300,000 km/s
The number of wave crests that go by a given point every second is called the
A.
wavelength
B.
frequency
C.
velocity
D.
amplitude
B.
frequency
A Hertz (Hz) is unit of measurement defined as

A.
a frequency of one cycle per second
B.
a wavelength of one cycle per second
C.
a velocity of one cycle per second
D.
an amplitude of one cycle per second
A.
a frequency of one cycle per second
Human skin detects ________ radiation as heat.

A.
microwave
B.
radio wave
C.
gamma
D.
infrared
D.
infrared
A sunburn is the result of excessive skin exposure to _________ radiation.

A.
microwave
B.
ultraviolet
C.
infrared
D.
gamma
B.
ultraviolet
Modern medicine uses which of the following rays to destroy tumors and cancers?

A.
microwave
B.
infrared
C.
gamma
D.
ultraviolet
C.
gamma
Which is the highest energy wave of the electromagnetic spectrum?
A.
microwave
B.
infrared
C.
gamma
D.
ultraviolet
C.
gamma
A process by which electromagnetic waves may be absorbed and rapidly re-emitted is called

A.
scattering
B.
reflection
C.
refraction
D.
absorption
A.
scattering
The height of a wave crest above the undisturbed level of a medium is its
A.
wavelength
B.
amplitude
C.
velocity
D.
frequency
B.
amplitude
The conversion of electromagnetic energy into heat energy is called

A.
reflection
B.
scattering
C.
refraction
D.
absorption
D.
absorption
The complete range of wavelengths of electromagnetic radiations in the universe is
A.
the transmission factor
B.
the spectrum
C.
the scattering effect
D.
the Doppler effect
B.
the spectrum
The difference between a transverse wave and a longitudinal wave is captured in

A.
the relationship between the motion of the medium and the motion of the wave
B.
the relationship between the amplitude of the wave and the frequency of the wave
C.
the relative motion between the source of the wave and the detector of the wave
D.
the elastic properties of the medium in which the wave travels
A.
the relationship between the motion of the medium and the motion of the wave
The bending of the travel direction of light as it leaves one medium and travels into another is called
A.
absorption
B.
refraction
C.
scattering
D.
reflection
B.
refraction
The scattering of light waves from the surface of an object is called what?
A.
reflection
B.
scattering
C.
refraction
D.
absorption
A.
reflection
Which of the following has the shortest wavelength?

A.
gamma rays
B.
microwaves
C.
am radio waves
D.
fm radio waves
A.
gamma rays
The narrowest range of frequencies in the electromagnetic spectrum belongs to
A.
infrared
B.
visible
C.
ultraviolet
D.
X-ray
B.
visible
Due to the Doppler effect, when a source of light approaches an observer, the light appears to be _______ than it actually is.
A.
brighter
B.
darker
C.
bluer
D.
redder
C.
bluer
The increase in frequency of an approaching source of electromagnetic radiation is termed the
A.
scattering effect
B.
transmission factor
C.
Doppler effect
D.
absorption spectrum
C.
Doppler effect