The form of electromagnetic radiation most effectively blocked by a dark nebulae is ________
Fill in the blank(s) with correct word
visible light
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The phase of the Moon on a particular night is determined by
a. the season of the year. b. the speed of the Moon in is orbit. c. the relative positions of the Sun, Earth, and Moon. d. how the Earth's shadow hits the Moon. e. the distance from the Earth to the Moon.
The rate of cratering in the lunar highlands shows us that:
A) they must be younger than the older, darker mare. B) they range from 4.6-4.4 billion years old, on average. C) the largest impacts are the youngest, such as Copernicus and Tycho. D) the oldest rocks are at least as old as the mare, but some craters are much younger. E) most of the asteroids must have hit the Moon, not the Earth.
Determine Qnet for the toasting bread in problem 7.9, if the surroundings act as a gray surface with emissivity of 0.45 and temperature of 85ºC.
The Moon's angular diameter in our sky as observed from Earth is measured to be 0.5°. From this, we can find the diameter of the Moon in kilometers if we also know the Moon's
a. distance from the Earth. b. element composition c. distance from the Sun.