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

Astronomy Part One

...

TermDefinition
Astronomy The branch of science that deals with celestial objects, space, and the physical universe as a whole.
Geocentric measured from or considered in relation to the center of the earth.
Heliocentric Measured from or considered in relation to the center of the sun.
Retrograde Motion The apparent motion of a planet to move in a direction opposite to that of other bodies within its system, as observed from a particular vantage point. Direct motion or prograde motion is motion in the same direction as other bodies.
Ellipse Oval shape
Astronomical Unit (AU) A unit of length, roughly the distance from the Earth to the Sun.
Rotation The action of rotating around an axis or center
Revolution An instance of revolving.
Precession The slow movement of the axis of a spinning body around another axis due to a torque acting to change the direction of the first axis.
Preigree Ancestry
Apogee the point in the orbit of the moon or a satellite at which it is furthest from the earth.
Phases of the Moon The shape of the illuminated portion of the Moon as seen by an observer on Earth
Solar Eclipse An eclipse in which the sun is obscured by the moon.
Lunar Eclipse An eclipse in which the moon is abscured by the sun.
Crater Form a crater in (the ground or a planet).
Terrestrial Planet Planet that is composed primarily of silicate rocks or metals.
Jovian Planet Planet that is composed primarily of Gasses.
Nebula A cloud of gas and dust in outer space, visible in the night sky either as an indistinct bright patch or as a dark silhouette against other luminous matter.
Planetesimal A minute planet; a body that could or did come together with many others under gravitation to form a planet.
Asteroid A small rocky body orbiting the sun
Coma A state of deep unconsciousness that lasts for a prolonged or indefinite period, caused especially by severe injury or illness.
Comet A celestial object consisting of a nucleus of ice and dust
Meteoroid A small body moving in the solar system that would become a meteor if it entered the earth's atmosphere
Meteor A small body of matter from outer space that enters the earth's atmosphere, becoming incandescent as a result of friction and appearing as a streak of light.
Meteorite A meteor that survives its passage through the earth's atmosphere such that part of it strikes the ground
Electromagnetic Spectrum The range of wavelengths or frequencies over which electromagnetic radiation extends.
Photon A particle representing a quantum of light or other electromagnetic radiation. A photon carries energy proportional to the radiation frequency but has zero rest mass.
Spectroscopy The branch of science concerned with the investigation and measurement of spectra produced when matter interacts with or emits electromagnetic radiation.
Doppler Effect An increase or decrease in the frequency of sound, light, or other waves as the source and observer move toward each other
Refracting Telescope A telescope that uses a converging lens to collect light.
Reflecting Telescope A telescope in which a mirror is used to collect and focus light
Radio Telescope An instrument used to detect radio emissions from the sky, whether from natural celestial objects or from artificial satellites.
Hubble Telescope A space telescope that was launched into low Earth orbit in 1990
Space Shuttle A rocket-launched spacecraft, able to land like an unpowered aircraft, used to make repeated journeys between the earth and earth orbit.
Created by: 3082501
Popular Earth 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