Seasons
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| seasons | each of the four divisions of the year (spring, summer, autumn, and winter) marked by particular weather patterns and daylight hours, resulting from the earth's changing position with regard to the sun.
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| hemisphere | a half of the earth, usually as divided into northern and southern halves by the equator, or into western and eastern halves by an imaginary line passing through the poles.
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| Hubble Telescope | space telescope that was launched into low Earth orbit in 1990 and remains in operation.
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| tides | rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon and the Sun and the rotation of Earth.
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| equator | an imaginary line drawn around the earth equally distant from both poles, dividing the earth into northern and southern hemispheres and constituting the parallel of latitude 0°
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| Chandra x-ray Observatory | Flagship-class space observatory launched on STS-93 by NASA on July 23, 1999
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| Fermi-Gamma-Ray Telescope | space observatory being used to perform gamma-ray astronomy observations from low Earth orbit.
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| eclipse | an astronomical event that occurs when an astronomical object is temporarily obscured, either by passing into the shadow of another body or by having another body pass between it and the viewer.
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| phases | a distinct period or stage in a process of change or forming part of something's development
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| rotation | the action of rotating around an axis or center.( spin)
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| gravitational force | the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface
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| Voyager Probes | The Voyager program is an American scientific program that employs two robotic probes, Voyager 1 and Voyager 2, to study the outer Solar System to reveal unknown details about each of the giant planets and their moons.
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| revolution | the movement of one object around a center or another object
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| International Space Station | a habitable artificial satellite, in low Earth orbit
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| tilt | the angle that the earth is positioned
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| solar eclipse | Moon passes between the Sun and Earth and casts a shadow on Earth
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| lunar eclipse | Earth passes between the Sun and the Moon. The Moon is in Earth's shadow
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| solstice | the longest and shortest days of the year
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| equinox | equal day and night
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| crescent | moon is less than half lit
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| full moon | Side of the Moon facing Earth is fully lit.
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| gibbous | Moon is more than half lit.
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| new moon | Side of the Moon facing Earth is completely dark.
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| umbra | the area on the earth or moon experiencing the total phase of an eclipse.
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| penumbra | the shadow cast by the earth or moon over an area experiencing a partial eclipse
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| ebb | the movement of the tide out to sea
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Created by:
Ms. Long 6
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