Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Ally Brown

Chapter 17/18

TermDefinition
Mechanical Wave A disturbance in matter that carries energy from one place to another.
Medium The material through which a wave travels
Crest The highest point of the wave above the rest position
Trough The lowest point below the rest position
Transverse Wave A wave that causes the medium to vibrate at right angles to the direction in which the wave travels
Compression An area of where the particles in a medium are close together
Rarefaction An area where the particles in a medium are spread out
Longitudinal Wave A wave in which the vibration of the medium is parallel to the direction the wave travels
Surface Wave A wave that travels along a surface seperating two media
Periodic Motion Any motion that repeats at regular intervals
Period The time required for one cycle
Frequency The number of complete cycles in a given time
Hertz Cycles per second, measures frequency.
Wavelength The distance between a point on one wave and the same point on the next cycle of the wave.
Amplitude The maximum displacement of a point from its rest position
Reflection Occurs when a wave bounces off a surface that it cannot pass through
Refraction The bending of a wave as it enters a new medium at an angle
Diffraction The bending of a wave as it moves around an obstacle or passes through a narrow opening
Interference Occurs when two or more waves overlap or combine
Constructive Interference Occurs when two or more waves combine to produce a wave with a larger displacement
Destructive Interference Occurs when two or more waves combine to produce a wave with smaller displacements
Standing Wave A wave that appears to stay in one place
Node A point on a standing wave that has no displacement from the rest position
Antinode A point where a crest or trough occurs midway between two nodes
Electromagnetic Waves Transverse waves consisting of changing electric fields and changing magnetic fields
Electric Field A region of space exerts electric forces on charged particles
Magnetic Field A region of space produces magnetic forces
Electromagnetic Radiation The transfer of energy bu electromagnetic waves traveling through matter or across space
Photoelectric Effect The emission of electrons from a metal caused by light striking the metal
Photons Packets of electromagnetic energy
Intensity The rate at which a wave's energy flows through a given unit of area
Electromagnetic Spectrum The full range of frequencies of electromagnetic radiation
Amplitude Modulation The amplitude of the wave is varied, the frequency remains the same.
Frequency Modulation The frequency of the wave is varied, the amplitude remains the same.
Thermograms Color-coded pictures that show variations in temperatures.
Created by: alyssa.brown
Popular Physical Science sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards