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Astronomy Unit 1: week 3 pre-quiz
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An astronomical unit is...
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when the position of an object appears different when viewed from different positions.
the distance between the Earth and Sun
transits of Venus
What is a parallax
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when the position of an object appears different when viewed from different positions.
the distance between the Earth and Sun
transits of Venus
What do scientists call Venus going directly across the sun
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transits of Venus
the distance between the Earth and Sun
when the position of an object appears different when viewed from different positions.
Eratosthenes used what knowledge to calculate the size of the Earth
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The distance and temperature of the sun
The angle of the triangle in city 2 and the distance between the 2 cities
He used arcseconds and arcminutes
T or F: Using AU and arcseconds helped scientists to discover the radius of the sun
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True
False
What is an arcsecond
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1/60th of a degree
blackbody radiation curve
an object that absorbs all radiation that reaches it
How do scientists determine the sun and any star's temperature
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an object that absorbs all radiation that reaches it
1/60th of a degree
blackbody radiation curve
What is a blackbody
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1/60th of a degree
blackbody radiation curve
an object that absorbs all radiation that reaches it
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