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

2nd Semester Final

Earth Science & Astronomy

TermDefinition
Globular Clusters A spherical collection of stars that orbits a galactic core as a satellite. Globular clusters are very tightly bound by gravity, which gives them their spherical shapes and relatively high stellar densities toward their centers.
White Drawf Is very dense: its mass is comparable to that of the Sun, while its volume is comparable to that of Earth.
Blue Main Sequence Star A main-sequence (hydrogen-burning) star of spectral type B and luminosity class V. These stars have from 2 to 16 times the mass of the Sun and surface temperatures between 10,000 and 30,000 K; as the highest surface temperature
Nuclear Fusion A nuclear reaction in which two or more atomic nuclei come very close and then collide at a very high speed and join to form a new nucleus. This process is how the sun produces most of its energy.
Continental Drift The hypothesis that the continents move slowly over the Earth's surface and were once joined into one continent.
Decay of Radioactive Isotopes The heat that drives mantle convection.
Transform Boundary When plates slide past each other and crust is neither created nor destroyed.
Galaxy A cluster of billions of stars; vary widely in size and shape; typically much larger in size than star clusters.
Barred Spiral A spiral galaxy with a central bar-shaped structure composed of stars. Bars are found in approximately two-thirds of all spiral galaxies. The Milky Way is an example of it.
Irregular Galaxy A galaxy that does not have a distinct regular shape.
Hubble's Law States that the speed at which a galaxy is moving away is proportional to its distance from us.
Proxima Centauri Is 4.3 light-years from Earth.
Crest The point on the medium that exhibits the maximum amount of positive or upward displacement from the rest position.
Trough The point on the medium that exhibits the maximum amount of negative or downward displacement from the rest position.
Wavelength is simply the length of one complete wave cycle.
Amplitude Maximum amount of displacement of a particle on the medium from its rest position.
Divergent Boundaries Where two plates separate
Convergent Boundaries Where two plates collide forcing the edges of the two plates upward.
Subduction Zones (Convergent Boundaries) Oceanic Crust (more dense crust) is being sent beneath the less dense continental crust.
Radiation The emission or transmission of energy in the form of waves or particles through space or through a material medium.
Conduction The transfer of heat (internal energy) by microscopic collisions of particles and movement of electrons within a body.
Red Shift Happens when light or other electromagnetic radiation from an object is increased in wavelength, or shifted to the red end of the spectrum.
Star Clusters Groups of stars that formed together at about the same time; Open Clusters and associations have relatively few stars that are well spread out; Globular clusters are much larger and denser, and may contain more than a million stars.
P-Wave Or compressional wave, is a seismic body wave that shakes the ground back and forth in the same direction and the opposite direction as the direction the wave is moving.
Nuclear fission A nuclear reaction or a radioactive decay process in which the nucleus of an atom splits into smaller parts.
Supergiant Star Among the most massive and most luminous stars. They occupy the top region of the Hertzsprung–Russell diagram with bolometric absolute magnitudes between −5 and −7 with temperatures spanning from about 3,500K to over 20,000K.
Created by: atemple1
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