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A moving object that has no force acting on it will
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2) |
If the force of the Sun's gravity were suddenly turned off
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3) |
The difference between velocity and speed is that
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5) |
Ancient Greeks thought that forces cause motion, while Newton formulated that forces
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6) |
An object of mass M is accelerating because there is a force acting on it. What happens to the acceleration if I double the force?
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7) |
"For every action, there is an equal and opposite reaction" is a statement of
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8) |
Newton's law of gravitation
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9) |
For every action there is an equal but opposite reaction. If I hit a large piece of steel with a hammer (the action), what is the reaction?
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10) |
Newton's law of gravitation says the force between two objects
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11) |
When two objects attract each other by their gravity, if you double the mass of one object, the force becomes ______ as large, and if you double the mass of both objects, the force become ______ as large.
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12) |
Astronauts are weightless in the space shuttle because
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13) |
An object bound to the Sun will follow a(n)
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14) |
The tides in the Earth's oceans are primarily due to the gravity of the ___ on the Earth's near side and the gravity of the ___ on the Earth's far side.
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15) |
What is the main cause of ocean tides on the Earth?
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16) |
The Moon pulling on the Earth's tidal bulge causes _____, while the Earth's tidal bulge pulling on the Moon causes the _____.
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17) |
The gravitational attraction of the Sun and the Moon on the equatorial bulge of the Earth causes the axis of the Earth to
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18) |
Because of the precession of the Equinoxes
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19) |
The various wavelengths of radiant energy travel in vacuum at a speed which
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20) |
Jupiter is 5 astronomical units from the Sun. How does the apparent brightness of the Sun as seen from Jupiter compare to that seen from Earth?
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21) |
Light is
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22) |
Of the following types of electromagnetic radiation, that with the shortest wavelength is
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23) |
Waves or rays of the electromagnetic spectrum arranged according to increasing wavelength include:
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24) |
Different types of electromagnetic radiation (X-rays, infrared, radio, etc.)
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25) |
The relation between frequency (f), wavelength (w), and the speed of light (c) is :
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26) |
Roemer was able to estimate the speed of light by
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27) |
The size of Doppler Effect is related to the magnitude of
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28) |
Which of the following lists is arranged in order of decreasing energy per photon?
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29) |
The wavelength of red light is
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30) |
The photoelectric effect was important in developing our understanding of light because it demonstrates
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31) |
Light can be described
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32) |
Carbon-14 and Carbon-12 are ___ of the element carbon.
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33) |
The neutral subatomic particle which has a mass nearly the same as that of a proton is the
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34) |
Atoms are composed of
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35) |
Photon A is 5 times more energetic than photon B. This means that for photon A, compared to photon B,
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36) |
The strongest force in nature is
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37) |
Ordinary Hydrogen, the simplest of the chemical elements, consists of
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38) |
The change from one energy level to another higher level by an electron orbiting an atomic nucleus is called
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39) |
The most important assumption in the Bohr model is that
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40) |
In the Bohr model of the atom, energy is emitted or absorbed in the various optical spectrum lines when
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41) |
Why do the spectral lines of an element act as a "cosmic fingerprint"?
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42) |
An atom with two energy levels, E(low) of 5 energy units and E(high) of 20 energy units, has its electron in the E(high) energy level. This atom can
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43) |
The concept of a blackbody is useful because radiation emitted by a given area of a blackbody
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44) |
As a hot solid cools, Wien's Law says that the apparent color of the radiation it emits should
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45) |
A very hot blackbody emits
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46) |
In addition to direct viewing, modern telescopes allow the astronomer to use
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47) |
The single most important property of a telescope generally is the
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48) |
The best observatory sites are those that are
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49) |
The main reason that the Hubble Space Telescope (HST) is more powerful than ground-based telescopes for many astronomical studies is that
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50) |
One reason for observing heavenly bodies from an artificial satellite is to
observe these bodies in wavelengths of light which don't penetrate the Earth's atmosphere.
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