question

The time for the Moon to orbit Earth, relative to the stars is

answer

27.3 days

question

The south celestial pole is located at a declination of -90 degrees

answer

true

question

That Polaris will not always be the pole star is due to

answer

precession shifting the celestial pole

question

The synodic month is

answer

29.5 days

question

A star with a declination of +60.0 degrees will be

answer

north of the celestial equator

question

The fact that the Earth has moved along its orbit in the time it took to rotate once is the reason for

answer

the difference between solar and sidereal time

question

What are constellations?

answer

A number of stars making an apparent pattern in the celestial sphere

question

In the sky, declination is measured in degrees north or south of the celestial equator.

answer

true

question

f Scorpius is now prominent in the summer sky, in 13,000 years it will be best seen

answer

in the winter sky

question

You note that a particular star is directly overhead. It will be directly overhead again in

answer

23 hours 56 minutes

question

Over 20,000 stars are visible to the naked eye on the darkest, clearest nights.

answer

false

question

Into how many constellations is the celestial sphere divided?

answer

88

question

When the Moon is directly opposite the Sun in the sky, its phase is

answer

full

question

There are 3,600 arc seconds in a degree.

answer

true

question

The twelve constellations the solar system bodies move through are the

answer

signs of the Zodiac

question

Latitude and right ascension are coordinate systems used to find objects on the celestial sphere.

answer

false

question

The greatest distance above or below the ecliptic the Moon can move is

answer

5.2 degrees

question

In Ptolemy's geocentric model, retrograde motion occurs when the planet is closest to us, on the inside portion of the

answer

epicycle

question

In an annular eclipse,

answer

the Sun appears as a thin, bright ring

question

In the scientific method, it is not necessary to test your theory.

answer

false

question

A solar eclipse can only happen during a

answer

new moon

question

If new moon fell on March 2nd, what is the Moon's phase on March 12th?

answer

waxing gibbous

question

The star Wolf 1061 has a larger parallax, than the star Ross 652 (when viewed from Earth). What can you correctly conclude?

answer

Wolf 1061 is closer to Earth than Ross 652

question

If the Moon appears half lit, and the lit portion is getting smaller each night (you see less lit portion of the moon each night), its phase is

answer

third quarter

question

In Ptolemy's geocentric model, the normal eastward motion of the planets was along

answer

a deferent

question

From Earth, the Sun and Moon have about the same angular size.

answer

true

question

What will occur when the full moon is on the ecliptic?

answer

a total lunar eclipse

question

If you are in the Moon's umbral shadow, then you are witnessing

answer

a total solar eclipse

question

Changing the electric field will have no effect on the magnetic fields of a body.

answer

true

question

Which of these is the same for all forms of electromagnetic (E-M) radiation in a vacuum?

answer

speed

question

The total energy radiated by a blackbody depends on

answer

the fourth power of its temperature

question

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

answer

the cooler gas

question

Which of these is emitted when an electron falls from a higher to lower orbital?

answer

a photon

question

The two forms of electromagnetic (E-M) radiation that experience the least atmospheric opacity are

answer

visible light and radio waves

question

The observed spectral lines of a star are all shifted towards the red end of the spectrum. Which statement is true?

answer

This is an example of the Doppler effect

question

Which of these is not a form of electromagnetic radiation?

answer

DC current from your car battery

question

In general, the spectral lines of molecules are

answer

more complex than those of atoms

question

The Sun's observed spectrum is

answer

a continuum with absorption lines

question

If a source of light is approaching us at 3,000 km/sec, then all its waves are

answer

blue shifted by 1%

question

The spectral lines of each element are distinctive to that element, whether we are looking at emission or absorption lines.

answer

true

question

Increasing the temperature of a blackbody by a factor of 3 will increase its energy by a factor of

answer

81

question

In the Kelvin scale, absolute zero lies at

answer

zero K

question

In Bohr's model of the atom, electrons

answer

only make transitions between orbits of specific energies

question

As a star's temperature increases, the frequency of peak emission also increases.

answer

true

question

Electromagnetic radiation

answer

can behave both as a wave and as a particle

question

If the rest wavelength of a certain line is 600 nm, but we observe it at 594 nm, then

answer

the source is approaching us at 1 % of the speed of light

question

The shorter a wave's wavelength, the greater its energy.

answer

true

question

Medium A blocks more of a certain wavelength of radiation than medium B. Medium A has a higher

answer

opacity

question

Kepler's first law worked, where Copernicus' original heliocentric model failed, because Kepler described the orbits as

answer

elliptical, not circular

question

How much stronger is the gravitational pull of the Sun on Earth, at 1 AU, than it is on Saturn at 10 AU?

answer

100

question

Which of these was NOT seen telescopically by Galileo?

answer

stellar parallax

question

The speed of light in a vacuum is

answer

300,000 km/sec

question

Which of these observations of Galileo refuted Ptolemy's epicycles?

answer

the complete cycle of Venus' phases

question

According to Copernicus, the retrograde motion for Mars must occur

answer

at opposition, when the Earth overtakes Mars and passes between Mars and the Sun

question

A planet whose distance from the Sun is 3 AU would have an orbital period of how many Earth-years?

answer

sqrt 27

question

According to Newton's second law, if you double the force acting on a body, the acceleration will double.

answer

true

question

A wave's velocity is the product of the

answer

frequency times the wavelength of the wave

question

If a new wave arrives on shore every two seconds, then its frequency is 2 Hz.

answer

false

question

The force of gravity varies with the

answer

A) product of the two masses. C) inverse square of the distance separating the two bodies. Both A and C are correct

question

When a planet's orbit takes it closest to the Sun, it's called

answer

perihelion

question

A planet will speed up as it approaches the Sun.

answer

true

question

If a wave's frequency doubles and its speed stays constant, its wavelength

answer

is halved.

question

Tycho Brahe's contribution to Kepler's Laws of Planetary Motion were

answer

his detailed and accurate observations of the planets' positions.

question

As they move through space, the vibrating electrical and magnetic fields of a light wave must move 18) perpendicular to each other.

answer

true

question

According to Newton's first law, an object traveling in a circle does not have a force acting on it.

answer

false

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