Save
Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read 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
share
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

Waves Intro

TermDefinition
What do waves transfer? Energy
What can waves be? Longitudinal or Transverse
Which waves are parallel to the energy transfer? Longitudinal
Which waves are perpendicular to the energy transfer? Transverse
What type of wave are sound waves that travel through air? Longitudinal
What is wavelength ? The distance from a point on the wave to the equivalent point on the next wave
What is time period? The time taken for one complete oscillation
What is the equation of period? Period = 1 / Frequency
What is amplitude? The maximum displacement any particle receives from its undisturbed position
The shorter the time period of a wave... The higher the frequency
What happens when a wave is reflected? Reflection is the change in the direction of a wave that strikes the boundary between two different medias.
What is refraction? Refraction is a change in direction of light as it passes from one medium to another
Why does refraction occur? Refraction occurs due to the differences in velocity of the waves in different substances
Where is the normal construction line? The normal construction line is perpendicular to the reflecting/ refracting surface at the point of incidence
What are electromagnetic waves? Electromagnetic waves are transverse and transfer energy from a source to an absorber.
What do electromagnetic waves form? Electromagnetic waves form a continuous spectrum and travel at the same velocity through a vacuum or air
What do our eyes detect? Our eyes detect visible light (400-700 nm)
How are radio waves produced? Radio waves are produced by oscillations in electrical circuits
What happens when radio waves are absorbed? They create an alternating current with the same frequency as the radio wave itself.
What can changes in atoms and nuclei result in? Changes in atoms or nuclei can result in electromagnetic waves being generated or absorbed over a wide range of frequencies
Where do gamma rays originate from? They originate from changes in the nucleus of the atom
What are UV, X Ray and Gamma rays? They are ionising radiations and have a hazardous effect on human body tissue
What can UV rays do to skin? UV rays can cause the skin to age prematurely .
What can X Rays and Gamma rays cause? X Rays and Gamma rays can cause mutation of genes and cancer
How do you find wave speed? Wave speed= Frequency x Wavelength
What do longitudinal waves have? Areas of compression and rarefaction.
Created by: zaraakurt
 

 



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