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32 Cards in this Set
- Front
- Back
Made of sun and 8 planets, Pluto, moons, asteroids, and comets |
Solar system |
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Earth's path or _____ around the sun is _____. Earth completes 1 full orbit (________) every ______ days to a few hours. |
Orbit, elliptical, Revolution, 365 |
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_____ keeps Earth and the other planets in their orbit around the sun and the moon orbiting Earth. |
Gravity |
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Earth spins or rotates on its ____. Earth completes one rotation on its axis in about ____ - this causes ___ and _____. The different seasons of the year are evidence that Earth's axis is _____. |
Axis, 24 hours, day, night, tilted |
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Earth turns quickly on its axis so it doesn't have time to ____ up too much or get too ____. Earth's atmosphere spreads out ___ and ____ air, keeping Earth from becoming ____ by the Sun's rays. |
Heat, cold, warm, cool, overheated |
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Earth always tilts in the sameJ_____ during its orbit. This causes different parts of earth to face toward the ___ during each season and the amount of hours of daylight to _____. As Earth moves around the sun, many places that get daylight slowly ____. |
Direction, sun, change, changes |
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The temperature of the North and South poles stay so cold throughout the year because of the ____ of the Earth on its axis. |
Tilt |
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Each planet's revolution around the sun takes _____. The length of the planet's year depends on its ____ from the sun. |
One year, distance |
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1 AU is the average distance between the ____ and the _____ (Astronomical Unit ) |
Earth, Sun |
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Name the gas giants (_____): 4. composed mainly of ______. Name the dwarf planet |
(Outer planets) , Jupiter, Saturn, Uranus, Nepune, gas, Pluto |
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Name the inner planets and describe them (4). They all have a ______ surface. |
Mercury, Venus, Earth, Mars, Closest to the Sun, rocky |
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Spacecraft used to collect information about our solar system. These have shown that the inner planets have a _____ surface. |
Space probes, rocky |
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Name the planets and dwarf planet from the Sun in order. |
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto (dwarf planet) |
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Planet closest to Earth |
Venus |
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Planet closest to the Sun |
Mercury |
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Frozen mass of different types of ice and dust that orbits the Sun pass through the solar system in large elliptical pass |
Comet |
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Path of comet; Name and describe 3 ways. |
1. Nucleus-a "dirty snowball" made of dust and ice, exists both when the comet is close to the Sun and when it it far away from the Sun 2. Coma-great cloud of dust and evaporated gases, surrounds the nucleus 3. Two Tails-ion tail-narrow and bluish; dust tail-white and yellowish |
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As the comet passes near the Sun, the ____ and ____ ____ from the nucleus and become part of the _____. |
Water, gases, evaporate, coma |
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A rocky mass with an uneven shape that revolves around the Sun , sometimes called minor planets |
Asteroids |
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Region between Mars and Jupiter |
Asteroid belt |
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Small asteroid that is Boulder-sized or smaller |
Meteoroid |
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Meteoroid that hits Earth's atmosphere and burns up before hitting |
Meteor |
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Shooting stars are ___ ____, they are ______. |
Not stars, meteors |
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The moon is Earth's only natural _____. The same side always faces _____ because the moon's _____ and ______ happens at the same rate. |
satellite, Earth, rotation, orbit |
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Features on the moon's surface, such as _____ last ______ of years because the moon has no ____ to erode them. Does not make it own _____. ______ light from the Sun. |
craters, millions, water, light, reflects |
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any object that orbits another object |
satellite |
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The moon is the main cause of _____ on Earth. The moon's _____ pulls on Earth. |
tides, gravity |
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shapes of the lit side of the moon we can see, caused by the combination of Earth's movement and the Moon's orbit |
Phases of the Moon |
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Phases of the moon: ______- can barely be seen. Moon is passing between the ____ and the ____. |
new moon, Earth, Sun |
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Phases of the Moon: _____-can see only a sliver of the Moon's sunlit side. |
Crescent Moon |
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______-can see half of the moon's sunlit side |
Quarter moon |
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________-can see entire sunlit side of the moon. Earth is between the ____ and the _____. |
Full Moon, Moon, Sun. |