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

Universe/EM Spectrum

Big Bang Theory and Electromagnetic Spectrum

QuestionAnswer
How old is the Universe? 13.8 billion years
What happens to frequency as wavelength increases? frequency decreases
What is the single point in which all matter and energy first existed? singularity
The first person to observe galaxies Edwin Hubble
What portion of the EM spectrum causes skin cancer ultraviolet
What portion of the electromagnetic spectrum helps cell phones receive signals microwave/radio
What portion of the electromagnetic spectrum do humans emit? infrared
Which part of the EM spectrum is fastest? They are all the same speed.
Strength of a wave amplitude
Red shift and cosmic background radiation provide evidence for what? The Big Bang Theory
Top of a wave Crest
Bottom of the wave trough
Point on a wave from crest to crest wavelength
If the wavelength of light is stretched then light is moving away from the observer and is redshifted
If the wavelength of light is compressed then light is moving toward the observer and is blueshifted
What is the Doppler Effect? The frequency of an object's waves increase as it move towards the observer and decrease as they move away from the observer.
Where does an electromagnetic wave come from? vibration of electrons
What part of the EM spectrum has the most energy? gamma rays
Where do spectral emission lines come from? movement of electrons in an element when the atom is energized
Spectral lines of a star are useful because they can tell us how the star is moving or what elements are in the star
How many galaxies are in the Universe? 100 billion
What is a measurement of how often waves reach a certain point? frequency
How long have we known about galaxies? about 100 years.
What are the seven parts of the EM spectrum in order from highest to lowest gamma, x ray, ultraviolet, visible, infrared, microwave, radio
What colors make up visible light? which is the highest frequency? which is the lowest frequency r o y g b v, violet is the highest frequency and red is the lowest frequency
Are wave of the EM spectrum mechanical waves? Why? no, because they do not need a medium, sound is an example of a mechanical wave
What are the steps to the big bang theory hot dense, energy converts to matter, cooling and condensing of subatomic particles, hydrogen, helium, then other elements
Was all the matter in the universe created in an instant? no energy converted into matter, and matter formed as the universe cooled
What is a light year how far light travels in a year
What is the speed of light? 3.00 x 10 to the 8th
What's larger an AU or a light year? light year
Organize the following from largest to smallest planet, moon, Sun, galaxy, solar system, universe, red giant star universe, galaxy, solar system, red giant star, Sun, planet, moon
Hubble's Law All galaxies are moving away from earth showing that the universe is expanding
What is nucleosynthesis? elements being created through nuclear fusion (during big bang or currently in stars)
What is faster light or sound waves? light
As frequency increases what happens to energy of the wave? increases
How can parallax be useful to study distances of objects? using two known observation points and background objects to measure unknown distances
What do mechanical waves need to move? medium (solid, liquid, or gas)
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