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Science flash cards
Term | Definition |
---|---|
Rotation | spinning on an axis |
Revolution | spinning around the sun |
most common elements in the universe | hydrogen and helium |
light year | how far light travels in a year |
waxing | getting bigger |
waning | getting smaller |
which side of the moon will be lit up during the waxing phases | left |
Which side is it lit up on during the waning phases? | right |
Be able to identify moon phases on a diagram | ok |
solar wind | wind from the sun |
How long does it take for the moon to go from new moon to full moon? | 14 days |
Terrestrial planets | planets that have life |
Gas planets | planets made of gas |
Inner planets | planets closest to the sun |
Outer planets | planets farthest from the sun |
Asteroids | rocks that orbit sun |
Asteroid belt | where most asteroids are located |
You don’t need to know the difference between meteors, meteoroids, and meteorites. HOWEVER, study them and know a few things about them. | ok |
3 parts | nucleus, tail, coma |
which direction does the tail point | away from sun |
what causes the tail | wind |
photosphere | stars outershell |
corona | gas envelope of stars and suns |
solar wind | wind released from sun |
sun spot | dark spot on sun |
nuclear fusion | source of suns energy |
nebula | cloud of dust |
main sequence | most of a stars life |
red giant | large star |
red supergiant | 3x mass of sun, when star runs out of oxygen |
supernova | explosion of star |
black dwarf | remains of dead star |
black hole | area of immense gravity nothing can escape |
what causes stars to have different life cycles | its mass |
a protostar must start what to be considered a star | main sequence |
milky way | a galaxy that contains our solar system |
elliptical | stretched circle of stars |
spiral | twisted collection of stars |
irregular | no shape/random collection of stars |
what is at the center of the galaxy | galactic center/black hole |