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49 Cards in this Set
- Front
- Back
The path in the sky followed by the zodiac constellations, Sun, Moon and Planets is known as |
Ecliptic |
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What is not true about Polaris? |
It is the brightest star in the sky |
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Starting point for the measurement of declination is |
Vernal Equinox |
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When is the Earth closest to the Sun? |
January |
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The spinning of a planet on its axis is known as |
Rotation |
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What best describes a theory? |
Hypothesis assumed for the sake of arguement |
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The tilt on the Earths axis will be what during our lifetime |
Unchanging
|
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Constellations are stars that are together in space (T/F) |
False |
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The location on the horizon where the Sun appears to rise ____ throughout the year |
Changes |
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The name given to the huge, hollow, dome of the sky that surrounds the Earth |
Celestial sphere |
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The seasons are caused by |
The angle that sunlight strikes the Earth changes due to our axis tilt |
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The axis of Earths rotation is tilted by |
23.5 degrees |
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What phase is the Moon during a lunar eclipse? |
Full |
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When a planet passes between us and the Sun, we have a |
Transit |
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The precession of the Earth's axis takes how many years? |
26,000 |
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What is a waxing moon? |
Moon is becoming more lit each night |
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During a solar eclipse, the moon comes between the Sun and the Earth (T/F) |
True |
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The motion that occurs when an object circles about a central object such as a planet orbiting the Sun is know as |
Revolution |
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The location where the Sun crosses the celestial equator is known as the |
Equinox |
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The location where the Sun halts its N or S movement on the horizon and reverses direction is known as the |
Solstice |
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The siderial day, measured by the stars, is ___ than the solar day |
4 minutes shorter |
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What does the term equinox mean? |
Equal day and night |
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The tilt of the Earths axis is ___ during the course of the year |
Constant |
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What happens when the Moon crosses into the Earth's shadow |
Lunar Eclipse |
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What astronomers refer to as seeing, is really |
Turbulence in the atmosphere |
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Which is the longest wavelength Electromagnetic radiation? |
Radio |
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The space telescope that detects infrared is |
Spitzer |
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The space telescope that detects X-Rays is |
Chandra |
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This Telescope is going to replace the Hubble in 2018 |
James Webb |
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This man's double slit experiment proved that light had a wave nature |
Young |
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A telescope with a diameter of 6" will have ___ the light gathering power as a telescope whose diameter is 2" |
9 Times |
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Which is not a unit used to determine the wavelength of light? |
Kilometers |
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This is a type of defect in mirrors |
Spherical Aberration |
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Einsteins explanation of the photoelectric effect required that light be |
A particle |
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The peak color in the blackbody curve for an object tells us the objects |
Temperature |
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A wave with long wavelength will have what kind of frequency? |
Low |
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Which unit is used to measure frequency? |
Hertz |
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What is collected by today's astronomers that allows them to see behind dust clouds in space? |
Infrared |
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What do we call the ability of a telescope to separate a blob that looks like one star into two stars? |
Resolution |
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The ability of a telescope to separate close objects is known as |
Resolution |
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The light gathering power of a telescope depends on the |
diameter of the lens or mirror |
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The type of telescope that uses lenses as the primary imaging device is a |
refractor |
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Which is the highest energy Electromagnetic radiation? |
Gamma rays |
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This new telescope technique adjusts the collected light from a star a 1000 times a second to correct for atmospheric turbulence |
Adaptive Optics |
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The lens defect that creates an image that is reddish on one ride and blueish on the other is known as |
Chromatic aberration |
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The number of waves passing through a point in a given time is known as the |
frequency |
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This person's Sun-centered model correctly explained retrograde motion |
Copernicus |
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If an object is not moving with a constant speed, then |
a force must be acting |
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This motion occurs when a planet appears to move backward for a time in the night sky |
Retrograde |