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.
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards
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

Astronomy

Science

TermDefinition
Dwarf planet A spherical object that orbits the Sun, is not the moon of another planet, and has less mass than any of the other eight planets.
maria Large flat areas of the moon
Solar eclipse The moon passes between earth and the sun blocking the sun from view over the limited area where the moon cast its shadow
Lunar eclipse The moon passes behind the earth and through the shadow.
Rotate When objects in the solar system spin
Waxing phase In which phase is it when more of the moon's near side is lit each night during this phase (right)
Waning phase In which phase is it when less of the moon's near side is lit each night during this phase (left)
Umbra The central ,darker part of a shadow where light is totally blocked.
Tide The daily rise and fall of sea level
Spring tides During full and new moon phases
Neap tides First and third quarter moon.
What is Mercury mostly made up of and what is its rotation? Iron, nickel, silicon; 59 days
What are the 4 inner planets? Mercury, Venus, earth, Mars
What are the 4 outer planets? Jupiter, Saturn, Uranus, Neptune
Greenhouse effect The natural process that occurs when certain gases in the atmosphere absorb and reradiate thermal energy from the sun
Astronomical units (AU) The average distance from earth to the sun -- about 150 million km
Luminosity The true brightness of an object
Star color Blue - hotter ; red - colder
Apparent magnitude A measure of how bright an object appears from Earth
parallax The apparent Change in an objects position caused by looking at it from two different points
Big Bang theory Theorized explosion that created the universe and where all energy, matter, and space began.
Which two planets go through the greenhouse effect? Earth and Venus
What are the two pieces of evidence for the Big Bang theory? Background radiation and red shift.
When a red shift occurs do the objects move closer in or farther away? Farther away
Meteors Rocky materials that has entered earths atmosphere.
Meteorites Strikes a planet or a moon.
Astonomical units Distance from the eat he to the sun exactly 14597870700 meters = 93 million miles
What type of planet is Pluto? Dwarf planet
Luminosity Measure of how much energy leaves a star in a certain period of time.
Apparent magnitude How bright a star appears to be.
Absolute magnitude The actual brightness of a star.
Parallax An apparent change in position ex: tumb
How do craters form? When objects collide into the surface of another object
After the first week of the lunar cycle the moons entire ___________ half is lit. Western
During the second week of the lunar cycle when the moons near side is completely lit is what type of moon? Full moon
What is Mercury mostly made up of? Iron, nickel, and silicon
What is Venus mostly made up of ? Solidified lava
What is earth mostly made up of? Oxygen and silicon
What is Mars mostly made up of? Iron oxide
What is Jupiter mostly made up of? Hydrogen and helium
What is Saturn mostly made up of? Hydrogen and Helium
True or false: Mercury has NO atmosphere. False
What planet is the hottest planet in the solar system? Venus
True or False: earth is the only planet with water True
Why Does Mars have a red color to it? Because the soil on Mars contains ion oxide and that makes it red
What two substances is Saturn mostly made up of? Hydrogen and helium
What is the order of the planets from the sun? Mercury Venus earth Mars Jupiter Saturn urnaus Neptune
Geocentric theory is about what? A theory about the earth ( look over page 1 in your notes)
What is heliocentric theory about? A theory about the sun.
Inner planets are made of mostly what? Solid rocky materials
An object in the solar system orbits of what around anothe object Revolves
Waxing gibbous moon Most of the right side is lit
First quarter moon The right half of the moon appears lighted
Waxing crescent moon The crescent will get smaller and smaller every day until the moon looks like the new moon.
New moon The lighted side of the moon faces away from the earth- the moon is almost completely dark.
Waning crescent moon ( waxing means increasing or growing larger) the lit side of the moon is on the right .
Third quarter moon Sometimes called the last quarter. The left half of the moon appears lighted
Waning gibbous moon ( waning means decreasing or to get smaller) the left side is lit up.
Full moon The lighted side of the moon faces the earth. The moon that we see is very bright from the sunlight reflecting off of it.
Tides The daily rise and fall of sea level
Created by: ashlynn.marie