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WorksheetsSecond Semester Review
Total questions: 50
Worksheet time: 38mins
____ is a physical property of particles or objects that causes them to attract or repel each other without touching.
Electric field
Electric charge
Electric force
A space around a charged particle where the particle exerts electric force on other charged particles is called an ____.
Electric field
Electric power
Electric force
____ is the rate at which a device changes electric current to another form of energy and is measured in watts.
Electrical energy
Electrical force
Electrical power
Atoms are neutral in electric charge because they have the same number of negative electrons as positive protons; however, if atoms loose or gain electrons, they become charged particles called ____.
Isotopes
Ions
Neutrons
The Law of Conservation of Charge states that ____.
Electrons cannot jump from one material to another
Charges are the only matter that can travel in a vacuum
Electrons cannot be created or destroyed, they can only change position
____ occurs when there is direct contact between materials that differ in their ability to give up or accept electrons.
Friction
Conduction
Polarization
____ is the transfer of electrons when two materials that differ in their ability to give up or accept electrons are rubbed together.
Friction
Conduction
Polarization
____ is a buildup of electric charges on objects.
Static field
Static electricity
Static discharge
Matter can be kept electrically neutral by ____ it to the earth.
Ionizing
Grounding
Separating
____ is a continuous flow of electric charges through a medium and is measured in amps.
Electric current
Electrical energy
Electrical power
____ is a difference in electric potential energy from one place to another and is measured in volts.
Resistance
Ohms
Voltage
Which of the following is not true of alternating current?
It allows the voltage to be altered once the current reaches a destination
It changes direction 50-60 times per second
Batteries, solar cells, and fuel cells use alternating current
____ is opposition to the flow of electric charges in an electric current as it travels through matter.
Voltage
Resistance
Amplitude
____ states that current increases as voltage increases or resistance decreases.
Law of Conservation of Charge
Ohm’s law
Coulomb’s Law
Solar cells contain a material that absorbs light energy and gives off ____.
Electrons
Protons
Neutrons
____ are regions where the magnet is strongest.
Domains
Poles
Amperes
A Magnetic ____ is the area around a magnet where it exerts this magnetic force.
Field
Domain
Ion
Magnetic ____ are regions where the north and south poles of individual atoms are all lined up in the same direction.
Ions
Domains
Magnets
____ is magnetism produced by an electric current.
Electromagnetism
Electricity
Induction
A ____ is a coil of wire with electric current flowing through it, which produces a magnetic field that has north and south poles.
Motor
Solenoid
Transformer
A ____ is a solenoid wrapped around a bar of iron or other ferromagnetic material.
Electromagnet
Motor
Generator
Electric ____ use electromagnetic induction to change kinetic energy to electrical energy.
Motors
Generators
Magnets
An electric ____ is a device that uses an electromagnet to change electrical energy to kinetic energy.
Transformer
Motor
Generator
What does it mean to build a circuit in parallel?
The path from the negative to the positive end of the battery is not continuous, so the electrons cannot flow
The path of the circuit is closed, but not all the components are connected, giving the current multiple paths in which to flow
All the parts of the circuit are connected in a line, and the electricity has only one path to follow
What does it mean to build a circuit in series?
All the parts of the circuit are connected in a line, and the electricity has only one path to follow
The path of the circuit is closed, but not all the components are connected, giving the current multiple paths in which to flow
The path from the negative to positive end of the battery is not continuous, so the electrons cannot flow
A ____ wave is a wave that must travel through matter.
Mechanical
Electromagnetic
Spectral
In a ____ wave, the particles of the medium move up and down, perpendicular to the direction of the wave.
Transverse
Surface
Longitudinal
In a ____ wave, the particles of the medium move side to side, parallel to the direction of the wave.
Transverse
Surface
Longitudinal
The number of waves that pass a fixed point in a given amount of time is called ____, which is measured in Hertz (Hz).
Amplitude
Frequency
Wavelength
____ is the maximum distance the particles of a medium move from their resting positions when a wave passes through.
Amplitude
Frequency
Wavelength
____ is the distance between two corresponding points on adjacent waves, and it is usually measured in meters.
Amplitude
Frequency
Wavelength
____ occurs when waves bounce back from a surface they cannot pass through.
Reflection
Refraction
Diffraction
____ occurs when waves bend as they enter a new medium at an angle.
Reflection
Refraction
Diffraction
The ____ is a change in the frequency of sound waves that occurs when the source of the sound waves is moving relative to a stationary listener.
Law of Reflection
Wave-Particle Theory
Doppler Effect
____ of light occurs when light passes through matter.
Transmission
Absorption
Reflection
____ happens when light transfers its energy to matter rather than being reflected or transmitted.
Refraction
Diffraction
Absorption
When light is absorbed, the added energy increases the ____ of matter.
Texture
Temperature
Color
The ____ of visible light determines the color that the light appears.
Amplitude
Wavelength
Diffraction
The wavelengths of light that are ____ determine the color that an object appears to the human eye.
Reflected
Diffused
Longest
The ____ states that the angle at which light rays reflect off a surface is equal to the angle at which the incident rays strike the surface.
Wave-Particle Theory
Law of reflection
Rule of Thumb
____ are waves that consist of vibrating electric and magnetic fields and can travel through empty space.
Electromagnetic waves
Transverse waves
Longitudinal waves
All electromagnetic waves travel across empty space at the speed of light, which is ____.
3 x 108 m/s
400,000 mi/hr
2 x 104 ft/sec
The full range of electromagnetic radiation is called the ____.
Radiation Gradient
Electromagnetic spectrum
Law of Reflection
____ waves have the least energy of all electromagnetic waves and are used to transmit information over large distances.
Infrared
Microwave
Radio
____ are high frequency EM waves that have enough energy to pass through soft tissues such as skin, but not enough to pass through bones and teeth.
Microwaves
Radio
X-rays
The process in which the unstable nucleus of a radioisotope becomes stable by emitting charged particles and energy and changing to another element is called ____.
Decomposition
Enzyme action
Radioactive decay
____ radiation can travel only a few centimeters through air and can burn the skin but not penetrate it.
Alpha
Beta
Gamma
In ____ decay, a neutron breaks down into a proton and an electron, and the electron is emitted from the nucleus
Beta-plus
Beta-minus
Beta-alpha
Length of time it takes for half of a given amount of a radioisotope to decay into a more stable element is called the element’s ____.
Half-life
Decay coefficient
Radiation rate
____ is the splitting of the nucleus of a radioactive atom into two smaller nuclei.
Nuclear Decay
Nuclear Fission
Nuclear Fusion
