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36 Cards in this Set
- Front
- Back
- 3rd side (hint)
Plane of the ecliptic |
The flatness of the solar system results in the observable planets moving in, or near, the plane of earth's orbit |
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Ecliptic |
The path of the sun around the celestial sphere |
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Revolution |
The movement around the sun |
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Rotation |
The spinning of earth around an imaginary line through the geographic poles (earth's axis) |
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Solstices |
When the sun appears to stop increasing our decreasing its altitude the sky, stop, then reverse its movement twice a year |
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Winter solstice |
December 22nd and identifies the beginning of the winter season |
Sun at noon has the lowest altitude, shadow is longer than any other day |
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Summer solstice |
June 22nd identifies the beginning of the summer season |
Sun has highest altitude at noon, vertical shadow is shorter than any other day of the year |
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Equinoxes |
When the earth's axis is perpendicular to a line between the center of the sun and earth and daylight and night are if equal length |
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Spring equinox |
March 21st and identifies the beginning of the spring season |
vernal equinox |
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Autumnal equinox |
September 23rd and identifies the beginning of the fall season |
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Foucault pendulum |
Earth's rotation tool for evidence: heavy mass swinging from a long wire |
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Coriolis effect |
The apparent reflection caused by earth's rotation |
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Precession |
The slow wobble of the earth's axis |
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Full moon |
When the moon is on the earth side if the earth you see the entire illuminated half of the moon |
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New moon |
The entire Unlighted side of the moon is facing the earth |
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First quarter/last quarter |
Half lighted surface |
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Eclipse |
The event of the earth or moons shadow falling on the other body |
Check out different types |
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Umbra |
One of two parts of a cone that composes the shadow of an Eclipse: the inner cone of a complete shadow |
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Penumbra |
One of two cones that makes up the shadow of an Eclipse: the outer cone of a partial shadow |
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Total solar Eclipse |
When and where the umbrage of the moons shadow falls on the earth |
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Annular Eclipse |
Moons umbra fails to reach Earth |
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Lunar eclipse |
Mom and earth are lined up so earth's shadow falls on the moon |
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Tides |
Periodic rise and fall of sea level |
1. The greatest range of tides occurs at full and new moon passes 2. The least range of tides occurs at quarter moon phases 3. In most oceans the time between two high tides or between two low tides is an average of twelve hours and twenty five minutes |
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Spring tides |
Unusually high and low tides |
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Neap tides |
Unusually less pronounced high and low tides |
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Perigee |
Moons elliptical orbit brings it closest to the earth at this point |
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Apogee |
Moons elliptical orbit brings it farthest from Earth at a this point |
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Silicates |
Each has a basic silicon oxygen tetrahedral unit either isolated if joined together in the crystal structure |
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Ferromagnesian Silicates |
Grater density and darker color than other Silicates because of the presence of the metal ions |
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Non Ferromagnesian Silicates |
Light color and low density |
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Nonsilicates |
Minerals that do not have silicon oxygen tetrahedrons in their crystal structure |
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Igneous rocks |
Rocks that are formed from a hot molten mass of melted rock materials |
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Sedimentary rocks |
Rocks that formed from particles or dissolved materials from previously existing rocks |
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Metamorphic rocks |
Previously existing rocks that have been changed by heat, pressure, or hot solutions into a distinctly different rock |
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No |
No |
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Mean solar time |
What clocks measure; the average of apparent solar time over one year |
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