Physics Astronomy Multiple Choice Questions Homework Help
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1. State True or False
Right ascension in the sky is very similar to latitude on the Earth.
2.A wave’s velocity is the product of the
a. frequency times the period of the wave.
b. amplitude times the wavelength of the wave.
c. amplitude times the frequency of the wave.
d. frequency times the wavelength of the wave.
e. period times the energy of the wave.
3. State True or False
The celestial sphere is divided into 88 modern constellations.
4. State True or False
The vernal equinox marks the beginning of spring in the northern hemisphere.
5.State True or False
According to Newton’s second law, if you double the force acting on a body, the acceleration will double.
6.Which of these is the same for all forms of electromagnetic (E-M) radiation in a vacuum?
b. photon energy
7.The observed spectral lines of a star are all shifted towards the red end of the spectrum.
Which statement is true?
a. The star is not rotating.
b. The star has a radial velocity towards us.
c. This is an example of the photoelectric effect.
d. This is an example of the Doppler effect.
e. The second law of Kirchhoff explains this.
8.A jar filled with gas is placed directly in front of a second jar filled with gas. Using a spectroscope to look at one jar through the other you observe dark spectral lines. The jar closest to you contains
a. gas at very high pressure.
b. the hotter gas.
c. gas at the same temperature as the other jar.
d. the exact same gas as the other jar.
e. the cooler gas.
9.If a star was the same size as our Sun, but was 81× more luminous, it must be
a. four times hotter than the Sun.
b. 81 times hotter than the Sun.
c. three times hotter than the Sun.
d. nine times hotter than the Sun.
e. twice as hot as our Sun.
10.What is the name of the temperature scale that places zero at the point where all atomic and molecular motion ceases?
11.The total energy radiated by a blackbody depends on
a. the square of its temperature.
b. the square root of its temperature.
c. the cube of its temperature.
d. the fourth power of its temperature.
e. the cube root of its temperature.
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12.A star with a right ascension of 1.0 hours will rise
a. 1.0 hours after the vernal equinox.
b. 1.0 hours before the vernal equinox.
c. 11.0 hours after the vernal equinox.
d. at the same time as the vernal equinox.
e. 13.0 hours before the vernal equinox.
13.While watching a star, you see it moves 15 degrees across the sky. How long have you been watching it?
a. 1 minute
b. 1 hour
c. 15 seconds
d. 15 minutes
e. 3 hours
14.The greatest distance above or below the ecliptic the Moon can move is
a. 30 degrees.
b. 23.5 degrees.
c. 29.5 degrees.
d. 27.3 degrees.
e. 5.2 degrees.
15.The element first found in the Sun’s spectrum, then on Earth 30 years later, is
16.State True or False
The sidereal day is determined by the Earth’s rotation with respect to the stars.
17.State True or False
Constellations are close clusters of stars, all at about the same distance from the Sun.
18.State True or False
Latitude and right ascension are coordinate systems used to find objects on the celestial sphere.
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