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6sc Astronomy

Astonomy Big 20

QuestionAnswer
Big Bang initial explosion that resulted in the formation and expansion of the universe
Lunar eclipse blocking of sunlight to the moon that occurs when Earth is directly between the sun and moon
Autumnal equinox day of the year that marks the beginning of fall in the Northern Hemisphere
meteoroid chunk of rock or dust in space
inertia tendency of a moving object to continue in a straight line or a stationary object to remain in place
meteor a streak of light in the sky produced by the burning of a meteoroid in earth's atmosphere
asteroid belt the region of the solar system between the orbits of Mars and Jupiter where many asteroids are found
rotation spinning motion of a planet about its axis
waning the moon is shrinking
revolution movement of an object around another object
ellipse an elongated circle, or oval shape; the shape of the planets' orbits
waxing moon is growing
meteorite meteoroid that has hit the earth
geocentric description of the solar system in which all the planets revolve around Earth
solar eclipse blocking of sunlight to Earth that occurs when the moon is between the sun and Earth
heliocentric description of the solar system in which all of the planets revolve around the sun
comet ball of ice and dust whose orbit is a long, narrow ellipse
solstice two days of the year on which the noon sun is directly overhead at either 23.5 South or 23.5 North
vernal equinox day of the year that marks the beginning of spring in the Northern Hemisphere
asteroids objects revolving around the sun that are too small and too numerous to be considered planets
Created by: cj_ritter
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