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30 Cards in this Set
- Front
- Back
- 3rd side (hint)
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light year |
the distance light travels in a year |
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galaxy |
a system of millions or billions of stars and solar systems with a tight cluster of stars at the center
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elliptical galaxy |
a galaxy with a flat oval-like shape |
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spiral galaxy |
a galaxy that is shaped like a spiral with two or more spiral arms |
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irregular galaxy |
a galaxy with no particular shape |
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planet |
a round celestial body moving in an elliptical orbit around a star
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moon |
a round celestial body that orbits a planet |
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asteroid |
a large piece of rock that is floating through space |
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comet |
a cluster of ice, gas, and dust that has a narrow elliptical orbit with a tail that faces the sun |
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meteoroid |
small piece of rock that enters the Earth's atmoshpere |
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Lunar movement |
The way the moon moves through space |
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Moon phases |
How much of the lit side of the moon is facing towards Earth |
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New moon |
When none of the moon's light is shining on Earth |
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Waxing crescent |
When the right side of the moon is lit in a crescent shape |
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1st quarter |
Phase of the moon in which the right half of the moon is lit |
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Waxing Gibbous |
Phase of the moon in which more than half of the right side of the moon is lit |
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Full moon |
when all of the moon appears to be lit from Earth |
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Waning gibbous |
Phase of the moon in which more than half of the left side of the moon is lit
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3rd/last quarter |
Phase of the moon in which the left half of the moon is lit
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Waning crescent |
When the left side of the moon is lit in a crescent shape
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Solar Eclipse |
When the sun's light is blocked by the moon going completely in front of it along its orbit |
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Lunar Eclipse |
When the Earth is aligned between the sun and the moon, making a full moon appear a dark red |
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Gravity |
the force that pull every object in the universe together |
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Mass |
amount of matter in an object |
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Weight |
how much gravity is pulling on an object |
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Spring scale |
tool used to measure weight in newtons |
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Triple beam balance |
tool used to measure the mass in an object |
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Independent variable |
in an experiment, the variable that isn't changed |
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Dependent variable |
the variable that changes throughout the experiment caused by the independent |
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Controlled variable |
factors in an experiment that stay constant |
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