Science Waves Flashcards
What is a wave
A repeating disturbance or vibration
The material through which a wave travels is called a(n)
Medium
What can act as mediums
Solids, liquids, gasses
Waves that require a medium through which to travel are called
Mechanical Waves
When waves travel through a medium, they carry the medium with them; True or False?
False
What happens to a duck on the surface of a pond when a wave passes under it, Explain?
The duck stays in them same spot. Waves travel transfer energy, not matter.
Give an example of a wave that can travel through empty space
Electromagnetic wave
How are waves classified
Transverse & longitudinal
Wave the are PERPENDICULAR to the direction in which the waves are traveling are called
Transverse waves
Suppose you move the free end of a rope up and down to create a wave. In that case, the rope is a medium. What is the relationship between the movement of the wave and the movement of the particles of the medium
The particles are moving perpendicular to the wave’s motion
The highest part of a transverse wave is called
Crest
Lowest part of a transverse wave is called
Trough
What type of waves move the particles of the medium PARALLEL to the direction in which the wave are traveling
Longitudinal
In longitudinal waves in a spring, the parts where the coils are close together are called
Compression
In longitudinal waves a spring, the parts where the coils are spread out are called
Rarefaction
The maximum distance the particles of the medium carrying a wave move away from their rest position is called the wave’s
Amplitude
The amplitude of a wave is a direct measure of the wave’s
energy
The distance between two corresponding parts of a wave is its
wavelength
The number of complete waves that pass a given point in a certain amount of time is called the wave’s
Frequency
If you make a wave in a rope so that one wave passes every second, what is its frequency
1 wave per second
What unit of measurement is used for frequency
Hertz
The speed of a wave is how far the wave travels in one unit of
Time
The bouncing back of a wave when it hits a surface through which it cannot pass is called
Reflection
Give an example of reflection
Mirror/glass
Only transverse waves obey the law of reflection, True or False
False
What happens when a wave moves from one medium to another medium at an angle, (must refer to speed)
The wave may speed up or slow down. When entering a second medium causing it to bend
The bending of waves as they enter a different medium is called
Refraction
All waves change speed when they enter a new medium, but they do not always bend. When does bending occur
When one side of the wave enters the new medium before the other side of the wave
The bending of a wave entering a new medium occurs because the two sides of the wave are traveling at different
Speeds
What happens when a wave passes a barrier or moves through a hole in a barrier
It bends and spread out
The bending of waves around the edge if a barrier is known as
Diffraction
When two waves meet, they have an effect of each other. This interaction is called
Interference
When does constructive interference occure
A crest interferes with another crest producing a larger amplitude
When the amplitudes of two waves combine with each other to produce a smaller amplitude is called
Destructive
What is a standing wave
Two waves of identical frequency interfere with one another while traveling in opposite directions along the same medium
___ Refraction
___ Diffraction
___Constructive Interference
___Destructive Interference
___Reflection
a. When two waves combine to make a wave with a smaller amplitude
b. When a wave bends as it moves from deep water to shallow water
c. When two waves combine to make a wave with a larger amplitude
d. When a wave bounces back from a barrier at the same angle it hits
e. When waves bend or spread out around or behind an obstacle
b
e
c
a
d
Order of electromagnetic spectrum
Radio waves, Infrared, Visible Light, UV, X-rays, Gamma Rays
The color of an object is the color of the light it
Reflects
What color do you see when white light strikes a material that reflects all the colors, such as a skunk’s stripe
White
What color do you see when white light strikes a material that absorbs all the colors, such as a skunk’s body
Black
