Chapter 14 Flashcards
Wave
A periodic disturbance in a solid, liquid, or gas as energy is transmitted through a medium.
Medium
A physical environment in which phenomena occurs.
Mechanical wave
A wave that requires a medium through which to travel.
Electromagnetic wave
A wave that consist of oscillating electric and magnetic fields, which radiate outward at the speed of light.
Transverse wave
A wave in which the particles of the medium move perpendicular to the direction the wave is traveling.
Longitudinal wave
A wave in which the particles of the medium vibrate parallel to the direction of the wave motion.
Crest
The highest point of a wave
Trough
The lowest point on a wave
Amplitude
The maximum distance that the particles of a wave medium vibrate from their rest position
Wavelength
The distance from any point on a wave to an identical point on the next wave.
Period
The time that it takes a complete cycle or wave oscillation to occur
Frequency
The number of cycles or vibrations per unit of time.
Reflection
The bouncing back of a ray of light, sound, or heat when the ray hits a surface that it does not go through.
Diffraction
A change in the direction of a wave when the wave finds an obstacle or an edge, such as an opening.
Refraction
The bending of a wavefront as the wavefront passes between two substances in which the speed of the wave differs
Interference
The combination of two or more waves of the same frequency that results in a single wave
Constructive interference
Any interference in which waves combine so that the resulting wave is bigger than the original waves
Destructive interference
Any interference in which waves combine so that the resulting wave is smaller than the largest of the original waves
Standing wave
A pattern of vibration that simulates a wave that is standing still
What does a Water wave do ?
transport energy and water.
what does the medium seismic waves travel through?
rocks and other materials inside Earth.
Sound waves are?
longitudinal waves.
A wave has a period of 0.25 seconds. The frequency of this wave is?
4 hertz.
A child is sending pulses down a stretched rope at a rate of 2 pulses per second. The distance between the pulses is 5 meters. What is the speed of the wave?
2.5 m/s
The frequency of a sound wave determines?
the pitch of the sound.
What is a wavefront
a surface made up of all the points on a wave that have the same
energy.
What is the difference between visible light and X rays?
the amplitude of visible light is greater.
A wave x meters long has a speed of y meters per second. The frequency of the wave is?
X/Y
The greater the frequency of the wave in a particular medium, the
greater the wavelength of the wave.
True or false
True
Radio waves are an example of mechanical waves.
True or false
False
Electromagnetic waves
Light waves are examples of transverse waves.
True or false
True
The energy of a mechanical wave depends on the frequency of the wave?
True or false
False
It requires a medium
As the period of the wave increases so does the frequency increases
True or false
True
When a wave reflects from a fixed boundary, the only change in the wave is the direction of travel
True or false
True
If two tuning forks of different frequencies are struck at the same
time, you will hear beats as the result of constructive interference
followed by destructive interference.
True or false
True
The matter through which a wave travels is called ?
Medium
A wave that causes the particles of the medium to vibrate perpendicularly to the direction the wave travels is called
Transverse Waves
The lowest point of a wave is called the?
Trough
The _____is the time required for one complete wave oscillation to occur.
Period
The change in the direction of a wave when the wave encounters an obstacle or opening is called .____________________.
reflection
In ____________________, waves combine so that the resulting wave is bigger than the largest of the original waves.
constructive interference
What causes the colorful swirls in soap bubbles?
The refraction of light through the different thickness of the soap bubbles.
