Wave and Light Test Review Flashcards
Sound waves travel fastest through ________
solids
The number of waves that pass a given point in a second is known as a wave’s ________________
frequency
A wave is a pattern of motion that transports _______
energy
The colors we see depend on the wavelength and frequency of the light. True or False
True
Objects that absorb certain wavelengths of light and transmit other wavelengths are called __________ objects.
translucent
Which of the following forms of electromagnetic radiation has the highest frequency?
gamma rays
Which of the following forms of electromagnetic radiation has the longest wavelength?
radio waves
Most sound waves travel through air making ______________ and rarefaction
compression
Higher frequency = _________ pitch
higher
Ultraviolet radiation is a form of electromagnetic radiation that has a longer wavelength than visible light and is therefore not detectable by the human eye. True or False
False - ultraviolet radiation has shorter wavelengths than visible
The relationship between wavelength and frequency is _________ proportional.
inversely
When a sound source is moving towards you, you hear a __________ frequency sound
higher
Electromagnetic radiation is organized by how much ________ it carries.
energy
Objects that do not allow light to pass through them are called _________ objects.
opaque
Humans cannot see infrared light with the naked eye, and can feel infrared’s energy in the form of heat on their skin. True or False
True - infrared light does not fall in the visible light spectrum, therefore can only be felt, but not seen
Two objects of the same size and material are left in direct sunlight for 30 minutes. After 30 minutes, which object would have increased temperature the most? White or dark cloth
Dark Cloth - the dark material does not allow any light to pass through it, therefore absorbing all the energy making the temperature increase
When an object appears green, which light is reflected? Which light is absorbed?
Green is absorbed, Roy Biv is absorbed
A waves velocity will __________ (increase or decrease) as it moves from a less dense medium to a more dense medium
decrease
Which answer lists the correct order of the visible light spectrum from the lowest energy to the highest energy?
Roy G Biv
Electromagnetic waves are ___________ to mechanical waves because they _____ need a medium to travel through.
not similar, don’t
How do electromagnetic waves differ from mechanical waves?
electromagnetic waves do not need a medium to travel through, mechanical do
sound waves cannot travel through which of these: paper, water, hydrogen, outer space
outer space
Waves transfer ___________
energy
At which temperature does sound move the fastest?
sound moves faster in higher temperatures and slowest in lower temperatures
how can you tell how much energy a wave has? What does least energy look like? What does more energy look like?
You can tell the amount of energy from the length of the wavelength, the longer the wavelength, the less the energy, the shorter the wavelength, the more the energy.
As wavelength increases, frequency ___________
decreases
