Homework Help for Astronomy (page 2)
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Why do astronomers need different telescope designs to observe across the electromagnetic spectrum?
A) New telescopes incorporate new technology to increase their efficiency.
B) Telescopes have to adapt to the greater distortion of the atmosphere at shorter wavelengths.
C) Photons of different energy behave differently and require different collection strategies.
D) Light pollution is worse at radio wavelengths than visible wavelengths.
E) Astronomers and engineers enjoy the challenge of making new telescope designs.
Which of the following is the origin of almost all the large moons around the jovian planets?
A) They are captured asteroids.
B) They are captured comets.
C) They are captured planets.
D) They were formed by condensation and accretion in a disk of gas around the planet.
E) They were formed by giant impacts.
Which of the following statements about the celestial equator is true at all latitudes?
A) It extends from your horizon due east, through your zenith, to your horizon due west.
B) It lies along the band of light we call the Milky Way.
C) It cuts the dome of your sky exactly in half.
D) It represents an extension of the earth's equator onto the celestial sphere.
E) It extends from your horizon due north, through your zenith, to your horizon due south.
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