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Published byLester Blake Modified over 9 years ago
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Which star color indicates an 8000K main sequence star? (1) blue (3) yellow (2) white (4) red
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Light, stars, and the expanding universe… Textbook Pages 612-616
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Which type of electromagnetic energy has the longest wavelength? (1) infrared radiation (2) radio wave radiation (3) ultraviolet radiation (4) x-ray radiation
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Light takes.0000000002 seconds
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Light takes about 1.5 seconds
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Light takes about 8.5 minutes
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Our telescopes really look into the past. Billions of years ago we see the energy from the “Big Bang”.
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