Which of the following best describes the greatest known value for index of refraction?
A. 1.732
B. 1.999.... (just shy of 2)
C. 2.000... (2 exactly)
D. a value greater than 2 but not greater than 3
E. a value greater than 3
E. a value greater than 3
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The variations in the angle at which the Sun's rays strike Earth's surface give us the seasons. Name four physical factors that contribute to the Earth's seasons. (Hint: Think of the big picture.)
What will be an ideal response?
We can describe a position on Earth's surface by stating its
A) altitude and azimuth. B) altitude and direction. C) latitude and direction. D) latitude and longitude. E) meridian and longitude.
Which of the following stars has a spectrum that peaks at the highest frequency?
A) a blue star B) a red star C) a yellow star
When you look into a pool of water, the depth looks less than it actually is because the light is dispersed
a. True b. False Indicate whether the statement is true or false