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42 Cards in this Set
- Front
- Back
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orbit
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the path that an object in space takes around another object
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shooting star
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meteor; bright trail or streak
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Mars
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4th planet from the sun; has 2 moons
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axis
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a central point around which something turns; earth's axis
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moon
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a natural object that orbits a planet
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satelite (2)
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an object launched to orbit earth or other heavnly body
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revolution
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turning around or rotating; the motion of one heavnly body around another
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lunar eclipse
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the earth casts a shadow on the moon
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lunar phases
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the different shapes or phases of the moon in one month
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eclipse
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an object in space casts its shadow on another object
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comet
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a mountain sized chunk of ice and dust that orbits the sun
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star
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large, self-luminous, heavenly body; our sun
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planets (names)
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Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
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asteroid
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a large space rock that orbits the sun
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Mercury
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planet nearest to the sun; smallest planet
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rotation
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the spinning of a planet or a moon on its axis
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satellite
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an object either natural or manmade that orbits a planet
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Uranus
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7th planet from the sun; has 15 moons
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Neptune
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8th planet from the sun; has 2 moons
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revolution
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one complete trip of a planet around the sun
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Jupiter
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5th planet from the sun; has 14+ moons; largest planet
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Saturn
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6th planet from the sun; has 21 moons; second largest planet
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One moon phase cycle is how many days?
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29.5 days
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How long does it take the moon to orbit around the Earth?
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27.3 days
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What are 2 causes of the seasons?
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Tilt of the Earth on its axis (23.5 ) Earth orbiting around the sun
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How long does it take the Earth to spin on its axis?
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23 hours and 56 minutes
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How much of the moon is always illuminated by the sun?
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1/2 of it
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How long does it take the earth to go all the way around the sun?
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365.25 days
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Describe the shape of the earth
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Spherical not perfect, wider at the equator
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What causes day and night on earth?
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the rotation of earth on its axis
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What is a blue moon?
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The 2nd full moon in the same month
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What is the order of sun moon and earth for a full moon?
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sun, earth, moon
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What is the order of the sun earth and moon for a new moon?
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Sun, moon, earth
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List the order in which the phases of the moon occur
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new moon, waxing crescent, 1st quarter, waxing gibbous, full moon, waning gibbous, last quarter, waning crescent
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Is the moon older or younger than the earth?
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slightly younger
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What two factors cause the phases of the moon?
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the light from the sun that reflects off the moon, and the earth, moon, and sun
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Star
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an object in space that produces its own heat and light
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Telescope
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a tool for observing objects at a distance
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Solar system
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the sun and all objects that move around it
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venus
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2nd planet from the sun; brightest planet
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Earth
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3rd planet from ther sun; 1 moon
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Solar flare
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an eruption on the surface of the sun
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