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Activity #1Directions: Complete the chart by writing each statement in the correct space.StatementsEarth spins on its rotation axis in a counterclockwise direction.One Earth day equals 24 hours.It takes approximately one year to orbit the Sun.If the gravity between Earth and the Sun somehow stopped, Earth would fly off into space in a straight line.Each day the Sun appears to move from east to west across the sky.Changes in the seasons are caused by changes in the amount of sunlight striking Earth.Summer and winter are opposite seasons in the northern and southern hemispheres.Earth moves around the Sun.5962650-182880_______/900_______/9Earth moves in a counterclockwise motion.Earth’s RotationEarth’s RevolutionTilt of Earth on its Axis One Earth day equals 24 hours.If the gravity between Earth and the Sun somehow stopped, Earth would fly off into space in a straight line.Summer and winter are opposite seasons in the northern and southern hemispheres.Each day the Sun appears to move from east to west across the sky.Earth moves around the Sun.Earth moves in a counterclockwise motion.5924550122555_______/800_______/8Directions Explain the differences between each set of terms. Then explain how the terms in each set are related. TermsWhat is the difference between the terms?How are the terms related?Revolution, RotationRevolution occurs when an object moves around another object while rotation involves the spinning (in one place) of an object.Both terms involve the movement of an object in a circular motion.Orbit, RevolutionAn orbit is the path that an object takes around another object. Revolution is an object moving around another object.The orbit is the path that an object takes while it is revolving around another object.Rotation, Rotation Axis, EquatorRotation is the spinning of an object. The rotation axis is the point on Earth where the spinning occurs. The Equator is the imaginary line that circles the middle of Earth.The rotation of Earth occurs on the rotation axis and the Equator is the midway point between the North and South rotation axis.Solstice, EquinoxSolstices occur when the northern and southern hemispheres have opposite weather (during summer and winter). The Equinoxes occur when the northern and southern hemispheres have equal weather (spring and fall).Solstices and Equinoxes alternate seasons (spring equinox, summer solstice, fall equinox, etc.) and mark a specific phenomenon astronomically.59213750_______/1600_______/16Activity #2Directions Answer each question in the boxes below.December SolsticeMarch EquinoxJune SolsticeSeptember EquinoxWhere does the north end of Earth’s axis lean at this time of year?The north end of Earth’s axis leans away from the Sun during the Winter (December) Solstice.What is true about the number of daylight hours at this time of the year?The amount of daylight hours during the Spring (March) Equinox is equal – 12 hours of daylight, 12 hours of nighttime.Where does the north end of Earth’s axis lean at this time of the year?The north end of Earth’s axis leans towards the Sun during the Summer (June) Solstice.What is true about the number of daylight hours at this time of year?The amount of daylight hours during the Fall (September) Equinox is equal – 12 hours of daylight, 12 hours of nighttime.Which season does this day mark in the northern hemisphere?WinterIn the southern hemisphere?SummerWhich season does this day mark in the northern hemisphere?SpringIn the southern hemisphere?FallWhich season does this day mark in the northern hemisphere?SummerIn the southern hemisphere?WinterWhich season does this day mark in the northern hemisphere?FallIn the southern hemisphere?SpringWhy are temperatures cooler in the northern hemisphere at this time?The solar radiation is more spread out and less concentrated during this time.What can be said about the distribution of sunlight at this time?The solar radiation is equally distributed at this time.Why are temperatures warmer in the northern hemisphere at this time?The solar radiation is more concentrated in this area during this time.What can be said about the distribution of sunlight at this time?The solar radiation is equally distributed at this time.right160655Activity #3Directions Look at the diagrams then answer the questions for each. According to the diagram to the right, explain each of the following motions.Nutation The changing of the degrees of Earth’s axis.5962015490855_______/1300_______/13Precession The changing of the direction of Earth’s axis.How long does it take for each process to complete 1 cycle?Nutation 19 yearsPrecession 26,000 yea ................
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