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10 Cards in this Set
- Front
- Back
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Light year. |
The distance light travels in a year (9.46 trillion kilometers). |
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Astronomical unit. |
The average between the Earth and the sun (150 million kilometers), a unit of measurement used for distance in the solar system (abbreviated AU). |
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Order of the planets. |
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune (my very excellent mother just served us nachos). |
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Factors that allow Earth to support life. |
Hydrosphere (water), Atmosphere (air, burns up meteors so most don't hit us). |
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Law of Universal Gravitation, relationship between mass, distance, and the resulting gravitational force. |
G = 1/d^2 Larger mass / shorter distance = greater gravitational force. Smaller mass / greater distance = least gravitational force. In space (vacuum), everything falls at the same rate. |
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Fission vs. Fusion, and their applications. |
Fission - nucleas splits into 2 or more smaller fragments Fusion - nuclei combine |
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Rotation vs. Revolution, apply to Earth and Moon. |
Rotation - spin on axis. Revolution - circle around another object. Earth rotates on axis; moon revolves around Earth. Moon's rotation - 29.5 days Moons revolution - 29.5 Earth's rotations - 24 hours Earth's revolution - 365.25 days |
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Solar vs. Lunar eclipse |
Solar - Sun>Moon>Earth Lunar - Sun>Earth>Moon |
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Phases of the moon. |
New moon > waxing crescent > 1st qtr. > waxing gibbous > full moon > waning gibbous > 3rd qtr. > waning crescent The sun illuminates the moon. As the moon revolves we can only see certain parts. |
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Effect moon has on Earth. |
Moon pulls tides on Earth. |
