Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
55 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
Galaxy |
gravitationally bound star systems |
|
|
|
Milky Way Galaxy |
The Galaxy that contains our solar system |
|
|
|
Spiral galaxy |
A Galaxy with a arm or many spiral arms. |
|
|
|
Elliptical Galaxy |
A flat, bright looking Galaxy |
|
|
|
Irregular Galaxy |
A Galaxy with no definite shape. |
|
|
|
Light year |
Units used to measure distance in space. |
|
|
|
Revolution/orbit |
When a planet revolves on it external axis. |
|
|
|
Rotation |
A planets rotation on its internal axis |
|
|
|
Terrestrial |
Earth like |
|
|
|
Planet |
A celestial body revolving around a star. |
|
|
|
Dwarf planets |
celestial object that lacks criteria to be a planet |
|
|
|
Celestial objects |
A natural object |
|
|
|
Stars |
A luminous point in the night sky |
|
|
|
Moons/Natural Satellites |
celestial object that orbits another one |
|
|
|
Asteroids |
Orbit the asteroid belt |
|
|
|
Meteorites |
Chunk of rock that crashes to a planets surface |
|
|
|
Meteors |
Chunk of rock |
|
|
|
Meteoroids |
Move about the solar system |
|
|
|
Comets |
Have tails that face away from sun |
|
|
|
Photosphere |
The visible heat of the sun |
|
|
|
Corona |
The outermost layer |
|
|
|
Solar flare |
Explosions of hot gas |
|
|
|
Prominence |
Huge looping eruptions of gas |
|
|
|
Sunspots |
Areas of gas colder than the rest of sun |
|
|
|
Solar winds |
Charged particles from the sun |
|
|
|
Aurora's |
A natural electrical phenomenon |
|
|
|
Magnetic storms |
A disturbance of the magnetic field |
|
|
|
Axis |
An imaginary line which a body rotates |
|
|
|
Solstice |
sun reaches it highest/lowest point in the sky |
|
|
|
Equinox |
When the sun crosses the celestial equator |
|
|
|
Hemisphere |
Half of a sphere |
|
|
|
New moon |
the moon is almost directly between the earth and sun |
|
|
|
Waxing crescent |
the right sliver of the moon is lit up. |
|
|
|
First quarter |
half of the right side is lit |
|
|
|
Waxing gibbous |
2\3 of the right side is lit |
|
|
|
Full moon |
entire moon appears lit |
|
|
|
Waning gibbous |
2\3 is lit on the left side |
|
|
|
Third quarter |
half of the left side is lit |
|
|
|
Waning crescent |
a sliver on the left side is lit |
|
|
|
Gravitational force |
force influenced by mass and distance |
|
|
|
Mass |
amount of matter of an object |
|
|
|
Weight |
Pull of gravity on an object |
|
|
|
Tides |
changes in earth's ocean water |
|
|
|
Spring tides |
Extreme tides |
|
|
|
Neap tides |
average tides |
|
|
|
Solar eclipse |
moon directly between sun and earth |
|
|
|
Lunar eclipse |
earth directly between the sun and moon |
|
|
|
Triple beam balance |
item you use to measure mass |
|
|
|
Spring scale |
item you use to measure weight |
|
|
|
Refracting optical telescope |
Uses a lens to form an image |
|
|
|
Reflecting optical telescope |
Uses curved mirrors to form an image |
|
|
|
Radio telescope |
Detects radio-frequency radiation |
|
|
|
Satellite |
Man-Made object put into orbit around earth |
|
|
|
Space probes |
technology sent to go places humans can't. |
|
|
|
Spectroscope |
Instrument used to measure properties of light. |
|
