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Name ____________________The Earth, Moon and SunAstronomy Topics 11 and 12Question AnswerRound 1Round 2Round 3What is astronomy?The study of the moon, stars and other objects in space2 1 02 1 02 1 0What causes day and night?The Earth’s rotation on its axis2 1 02 1 02 1 0How long does it take for the Earth to complete one full rotation?24 hours2 1 02 1 02 1 0What causes seasons?The tilt of the Earth as it revolves around the Sun2 1 02 1 02 1 0How long does it take for the Earth to complete one revolution?365 days or one year2 1 02 1 02 1 0When the Northern Hemisphere is tilted towards the sun, what season do we experience?Summer2 1 02 1 02 1 0When the Northern Hemisphere is tilted away from the sun, what season do we experience?Winter2 1 02 1 02 1 0What is the difference between the summer and winter solstice? Summer solstice- around June 21; longest day/15 hrs of daylightWinter solstice- around December 21; shortest day/9 hrs of daylight2 1 02 1 02 1 0When are the lengths of daytime and nighttime equal? (12 hours)During an equinox (occurs in spring and fall); direct sun hits the equator2 1 02 1 02 1 0Why do we always see the same side of the moon?Because the moon revolves and rotates at the same speed, we can never see the far side of the moon.2 1 02 1 02 1 0Although half the moon is always lit, why do we see different phases of the moon?The phase we see depends on how much of the sunlit side faces the Earth2 1 02 1 02 1 0How long does it take for the moon to revolve around the Earth?About one month2 1 02 1 02 1 0If a full moon occurs on November 10th, approximately when will the next full moon occur?December 10th 2 1 02 1 02 1 0What occurs when the moon passes between the Earth and sun, casting a shadow on the Earth?Solar eclipse; occurs during a new moon2 1 02 1 02 1 0What is a lunar eclipse?When the Earth is between the moon and sun, casting a shadow on a full moon 2 1 02 1 02 1 0What causes tides?Differences in how much the moon pulls on different parts of the Earth2 1 02 1 02 1 0Which tide has the greatest difference in low and high tide?Spring tide; occurs during a full or new moon2 1 02 1 02 1 0Which tide has the least difference in low and high tide?Neap tide, occurs during a half moon (1st and 3rd quarter)2 1 02 1 02 1 0What is the difference between the heliocentric and geocentric models of our solar system?Geocentric- Earth is in the center of the solar systemHeliocentric- Sun is in the center of the solar system2 1 02 1 02 1 0What is the difference between the inner and outer planets?Inner- small and rockyOuter- much larger than Earth and made of gas2 1 02 1 02 1 0What keeps the planets in orbit?Inertia and Gravity2 1 02 1 02 1 0What is an asteroid?Objects revolving around the sun that are too small and too numerous to be considered planets2 1 02 1 02 1 0Where is the asteroid belt located?Between Mars and Jupiter2 1 02 1 02 1 0What is a meteor?A streak of light in the sky produced by the burning of a meteoroid in Earth’s atmosphere 2 1 02 1 02 1 0What is a comet?Chunks of ice and dust that travel in very long, narrow elliptical orbits around the sun2 1 02 1 02 1 0What is a light year?The distance light travels in a year 2 1 02 1 02 1 0How are stars classified?According to size, brightness, and temperature2 1 02 1 02 1 0TotalTotal ................
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