WorksheetsSci 8 Sound, Heat, and Light
Total questions: 78
Worksheet time: 39mins
What is the wavelength range of visible light?
800 nm to 600 nm
700 nm to 400 nm
500 nm to 400 nm
400 nm to 300 nm
Which color of visible light has the longest wavelength?
Violet
Green
Blue
Red
What is the property of light that refers to the bouncing back of waves?
Refraction
Reflection
Diffraction
Dispersion
What happens to light when it passes from air to liquid?
It reflects
It refracts
It diffracts
It polarizes
What type of wave is light classified as?
Longitudinal wave
Sound wave
Transverse wave
Mechanical wave
What type of wave is sound classified as?
Longitudinal wave
Sound wave
Transverse wave
Mechanical wave
What enables you to see colors?
Rod cells
Retina
Cone cells
Cornea
Why do objects appear white?
They scatter blue light
They emit red light
They reflect all colors
They absorb all colors
What is the bending of light when it passes through a gap called?
Reflection
Diffraction
Refraction
Dispersion
What is the term for the spreading of white light into its full spectrum?
Reflection
Refraction
Diffraction
Dispersion
What color of light has the highest frequency?
Violet
Red
Green
Blue
What is the distance between one point on a wave and the nearest point moving with the same speed called?
Frequency
Amplitude
Wavelength
Velocity
What causes the sky to appear blue?
Scattering of red light
Scattering of blue light
Reflection of light
Absorption of light
What is the flexible part of the eye that changes shape to focus on objects?
Cornea
Retina
Lens
Pupil
What is the term for light waves that vibrate in one direction?
Diffraction
Polarization
Refraction
Reflection
What happens to the amplitude of a wave as the energy increases?
It increases
It fluctuates
It remains the same
It decreases
What is a sound wave?
A type of light wave
A type of water wave
A type of heat wave
A type of wave that travels through air or other materials and carries sound
How do sound waves travel through a medium?
By the emission of light waves
By the absorption of thermal energy
By the motion of particles in the medium
By the release of electromagnetic radiation
Which of the following materials is the best conductor of sound?
Air
Steel
Water
Rubber
What best describes sound waves?
A wave that carries light
A wave that carries heat
A wave that carries sound
A wave that carries electricity
What happens to the charges when the voltage of the battery is increased?
Find the resistance in Ω of a single motor horn if it has a voltage of 12 V and current of 8.0 A.
If a power source has a resistance of 44 Ω and a current of 5.0 A, what is its voltage?
voltage
Current
Volt
Ampere
Ohm
Resistance
Resistance
Ohm’s law tells us that to increase the amount of current in a circuit, we can ________.
increase the voltage
Ohm’s law tells us that to increase the amount of current in a circuit, we can ________.
lower the voltage
lower the resistance
increase the resistance
It is the rate of flow of electric charges from one point to another in a circuit.
An instrument used to measure the current in the circuit.
It is the pressure from a power source that pushes charged electrons.
Voltage
It is what makes a current move.
Voltage
An instrument used to measure the voltage in a circuit.
the opposition to the flow of current wire
It provides resistance to the circuit.
Convert electric energy to light energy
It is a wave that carries energy from one place to another through different mediums.
Heat
It is produced by the vibrations of objects.
long wavelength = _____ pitch
Sounds with frequencies below 20 hertz are called ____.
Infrasound is too low-pitched for humans to hear.
true
false
Sounds with frequencies above 20,000 hertz are called ________.
inaudible
infrasound
ultrasound
small amplitude = ____ sound
Intensity (measured in dB) results from two factors: the amplitude of the sound waves and the _____ of the source of sound.
The particles of ____ are tightly packed making it hard for the particles to move.
The smaller the space between particles, the ____ the sound being transmitted.
The particles of ____ have few spaces in between, allowing them to move to very short distances.
The particles of gases are spread apart, making it possible for the particles to move to ____ distances.
shorter
farther
equal
It is the average kinetic energy of a system.
energy
temperature
light
heat
Which particles of the boiling water would have greater kinetic energy?
The particles near the surface would have higher kinetic energy compared to the particles near the source of heat.
The particles near the source of heat would have higher kinetic energy compared to the particles near the surface.
All particles in boiling water have the same kinetic energy.
Kinetic energy and temperature have ____ proportional relationship.
an indirect
It is defined as energy in transit.
Light
Sound
Heat is measured in _____.
fahrenheit
kelvin
celsius
Heat flows from ____ bodies or objects to ____ ones.
colder; warmer
hotter; colder
What will happen if If there is no temperature difference?
When will an object stop from giving off heat to a colder body?
Melting
Heat absorbed
Heat released
Freezing
Heat absorbed
Heat released
Condensation
Heat absorbed
Heat released
Deposition
Heat absorbed
Heat released
Evaporation
Heat absorbed
Heat released
Sublimation
Heat absorbed
Heat released
It is the general increase in the volume of a material as its temperature is increased.
Thermal equiibrium
It is a decrease in a material's volume when its temperature decreases.
Thermal equiibrium
When the substances expand or contract, which of the following changes?
the size of the particles
the spaces between the particles
the temperature of the particles
nothing changes
The ____ of a wave is the number of wavelengths that pass by a point each second (or certain amount of time).
The ____ of a wave is a measure of the distance between a line through the middle of a wave and a crest or trough.
As wavelength increases, the frequency and energy of the wave ____.
increase
decrease
stay the same
Arrange the colors of visible light according to wavelength from longest to shortest.
violet blue cyan green yellow orange red
red yellow cyan green blue violet orange
red orange yellow green cyan blue violet
violet cyan blue green orange yellow red
In terms of frequency, which has the highest frequency?
cyan
green
red
violet
The lens becomes ____ when you focus on a distant object.
The lens becomes ____ when you focus on an object nearby.
more curved
flatter
The ____ of the light waves that are reflected determine the object’s color
Which reflects all colors?
____ objects absorb all colors so no light is reflected.
____ cells are sensitive to dim light, and ____ cells enable you to see colors.
Bacilli; Neurons
Neurons; Bacilli
Cones; Rods
The sky appears blue because molecules in the atmosphere scatter ____ wavelengths of light, such as blue and violet.
We see sunsets as orange or red because, at ____ angles, the atmosphere scatters shorter wavelengths like blue, leaving the longer red and orange wavelengths to reach our eyes directly.
