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14 Cards in this Set
- Front
- Back
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What is gravitational attraction?
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The forces of attraction between two objects.
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What affects gravitational attraction?
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The mass of the objects and the distance between them.
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What are the two types ofmaterials that planets in our solar system are made up of?
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A. Dense, rocky material
B. Thick atmosphere of gasses and small solid core. |
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What is our solar system part of?
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The planet is part of the solar system which is part of a galaxy which is part of the universe.
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What causes night and day?
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The rotation of Earth on its axis.
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What are the solstices?
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Summer: June 20, the longest day of the year, when the North pole is pointed most directly toward the Sun.
Winter: December 20, The shortest day of the year, when the south pole is pointed most directly towards the Sun. |
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What does the sun look like at noon on each of the solstices?
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Summer Solstice: Highest in the sky
Winter solstice: Lowest in the sky |
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What is an Equinox?
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Spring Equinox: March 21.
Fall Equinox: September 21. This is when we experience equal days and nights.. Neither of the poles are pointed directly at the sun. |
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How much Daylight do we experience on the Equinoxes?
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Equal days and equal nights.
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How do stars move in the sky?
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From East to West.
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What causes the phases of the moon?
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The position of the moon relative to the Earth and Sun.
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Where is the moon in relation to the Earth and Sun during the stages of the moon?
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See diagram
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What determines the length of our Earth year?
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The amount of time it takes Earth to revolve around the Sun once.
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Why are summer days hotter than winter days in Rhode Island?
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During the summer, RI recieves more direct rays from the Sun. This is because Earth is tilted 23.5 degrees on its axis.
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