task cards for test
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| Rotation | the action of rotating around an axis or center.
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| Revolution | the movement of an object in a circular or elliptical course around another or about an axis or center.
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| Most common elements in the universe | Helium and hydrogen
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| Light year | a unit of astronomical distance equivalent to the distance that light travels in one year, which is 9.4607 × 1012 km (nearly 6 trillion miles).
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| Waxing | (of the moon between new and full) have a progressively larger part of its visible surface illuminated, increasing its apparent size.
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| Waning | (of the moon) have a progressively smaller part of its visible surface illuminated, so that it appears to decrease in size.
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| Which side is the moon lit up on during the waxing phases? | A waxing moon will be illuminated on the right side
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| Which side is it lit up on during the waning phases? | a waning moon will be illuminated on the left side.
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| Be able to identify moon phases on a diagram | New moon. Waxing Crescent. First quarter. Waxing Gibbous. Full moon. Waning Gibbous. Last (third) quarter moon. Waning Crescent.
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| Moon’s revolution period | 27.3 days
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| How long does it take for the moon to go from new moon to full moon? | 29.5 days
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| Terrestrial planets | Planets made of rock
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| Gas planets | Planets made of gas
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| Inner planets | Mercury, Venus, Earth, and Mars
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| Outer planets | Neptune, Uranus, Saturn, and Jupiter
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| Asteroids | a small rocky body orbiting the sun. Though some have more eccentric orbits, and a few pass close to the earth or enter the atmosphere as meteors.
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| Asteroid belt | a torus-shaped region in the Solar System, located roughly between the orbits of the planets Jupiter and Mars
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| meteors, meteoroids, and meteorites. | rocks from space that interact with earth
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| 3 parts of a comet | the tail, the nucleus and the coma.
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| Which direction does the tail of a comet point? | away from the sun
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| What causes the tail of a comet? | the sun's radiation pressure.
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| corona | an aura of plasma that surrounds the Sun
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| Solar wind | the continuous flow of charged particles from the sun which permeates the solar system.
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| Sunspot | a spot or patch appearing from time to time on the sun's surface, appearing dark by contrast with its surroundings.
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| Source of Sun’s energy | nuclear fusion within the sun
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| Absolute magnitude vs. Apparent magnitude | apparent magnitude — how bright the star appears from Earth — and absolute magnitude — how bright the star appears at a standard distance of 32.6 light-years
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| 90% of the stars on an H-R diagram are ______________ ______________ stars. | main sequence
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| Nebula | a cloud of gas and dust in outer space, visible in the night sky either as an indistinct bright patch or as a dark silhouette against other luminous matter.
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| Main sequence | the stage where a star spends most of its existence
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| Red giant | a very large star of high luminosity and low surface temperature. Red giants are thought to be in a late stage of evolution when no hydrogen remains in the core to fuel nuclear fusion.
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| Red supergiant | a red giant but huge.
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| Supernova | a star that suddenly increases greatly in brightness because of a catastrophic explosion that ejects most of its mass.
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| Black dwarf | a theoretical stellar remnant
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| Black hole | a region of space having a gravitational field so intense that no matter or radiation can escape.
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| What causes stars to have different life cycles? | their mass
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| A protostar must start what process to be considered a star? | nuclear fusion
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| Milky Way | the galaxy that includes our Solar System
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| Elliptical | a regular oval shape, traced by a point moving in a plane so that the sum of its distances from two other points (the foci) is constant, or resulting when a cone is cut by an oblique plane which does not intersect the base.
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| Spiral | winding in a continuous and gradually widening (or tightening) curve, either around a central point on a flat plane or about an axis so as to form a cone.
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| Irregular | Irregular
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| What is at the center of a galaxy? | supermassive black hole
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
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