AST 111 exam #1
What wavelength does the sun emit most of its radiation at, approximately?
0.5 microns (um)
If the moon rose at 10 pm tonight, when will it rise tomorrow night?
10:50 pm
If the moon is at first quarter tonight, and the sun has just set at 6 pm, then what time wil the moon set?
12 midnight
About how long does jupiter (at 5.2 AU) take to orbit the sun?
12 years
When did Copernicus publish his sun-centered model for the solar system?
1543 AD
When did Kepler publish his model of the solar system?
1609 AD
If the moon is full tonight, what is the angle between the mom and sun in the sky?
180 degrees
In December the sun is in the constellation of sagittarius and is directly over what latitude on earth?
23.5 degrees south
A new comet is discovered orbiting the sun at about the distance of 9 astronomical units. How long will it take to orbit the sun?
27 years
If an apple falls from a tree from a standstill, how fast is that applegoing after 3 seconds?
29.4 m/s
About how long does Saturn (at 9.6 AU) take to orbit the Sun?
30 years
The meter is defined as follows; if you walk from the equator to the north pole, you will walk 10,000,00 meters. what is the circumference of the earth?
40,000 km
How many nights after the first quarter do we hace to wait until the moon is a full moon?
5
If the moon is full tonight, what time will is rise?
6 pm
About how long does it take visible light to travel from the sun to the earth?
8 minutes
about how long does it take infrared light to travel from the sun to the earth?
8 minutes
If the moon was first quarter, what is the angle between the moon and the sun in the sky?
90 degrees
About how many cycles of the moon are there in 8 years
99
If the star Arcturus was highest in the sky at 10pm tonight, when will it be highest in the sky tomorrow night?
9:56 pm
The earth is exerting a gravitational force on the Moon to keep it going in a circle. What must be true?
The moon is puling on the earth with an equal force
According to Kepler's model of the solar system, which of the following is a shape of a planet's orbit?
an ellipse, with the sun a little off center
which of the following is the range of wavelengths of visible light?
b) 0.4-0.7 um
What is the approximate wavelength of microwave radiation?
centimeters (cm)
All things in the sky rise in the
east
If the sun's surface were twice as hot, the sun would:
emit more radiation, and emit mostly at shorter wavelengths
which of the following has the types of electromagnetic radiation with wavelengths shorter than visible light, in order of wavelength, short to long
gamma ray, X-ray, ultraviolet
Which of the following has the types of electromagnetic radiation with wavelengths longer than visible light, in order of short to long?
infrared, microwave, radio
If there were suddenly no gravity i the space near earth, what would happen to the international space station( orbiting earth)
it would shoot off in the same direction it was traveling, in uniform speed.
Halley's comet, like the planets, must obey Kepler's laws. What is true about its speed in its orbit?
it's fastest when it's close to the sun
There was a total solar eclipse seen in europe on august 11,1999, and a total solar eclipse seen in north america on august 21,2017. according to the saros cycle, when and where will we see another total solar eclipse?
september 2, 2035, in asia
From phoenix, when the sun is highest in the sky it is in the
south
If the moon is at first quarter tonight, and the sun just set at 6pm, then what part of the sky is the moon in?
south
The deflection fo light entering telescopes( stellar abberration) and the shift of star's position( stellar parallax) are demonstrations that
the earth is orbiting around the sun
The deflection of cannonballs, the spinning of hurricanes, the Foucault pendulum are all demonstrations that
the earth is spinning on its axis
A particular star has gases in its atmosphere that absorb at approximately all the same wavelength that helium gas does in laboratory experiments, except that in the star the wavelengths absorbed are all 5% shorter than we measure in the lab, which is true?
the star is moving towards us at 5% the speed of light.
which of the following is true about the wavelengths of light emitted by glowing "solids" like lightbulb filaments, people, and the interior of the sun?
they emit at all wavelengths
which of the following is true about the wavelengths of light emitted
they emit at only a few specific wavelength
Which of the following is true about often we will see eclipses from any one point on earth?
total solar eclipses every few decades about every 2.5 years
Which of the following types of electromagnetic radiation is out atmosphere transparent to?
visible and radio
All things in the sky set in the
west
which of these stars has the highest surface temperature?
Altair, a nearby bluish white star
If the moon is full, and the sun is in the constellation Leo, what constellation is the moon in?
Aquarius
If the moon is in the constellation pisces tonight, what constellation would it be in two nights from now?
Aries
Which of the following is a valid scientific hypothesis?
B) aliens are hiding in flying saucers behind the moon
What constellation is the sun in when it's over latitudes of 23.5 degrees north?
Gemini
Which of the following is a valid scientific refutation of the "astrology hypothesis"
Horoscopes predict your personality as well as rolling dice
Why is sunlight very weak at certain specific wavelength (like at .65 um)?
It has gases in its atmosphere that absorb those wavelengths?
Kepler's laws apply to Jupiter's moons as well as to the planets orbit the sun, but with a different numerical constant. in combination with Newton's laws, what did that tell us?
Jupiter has about 1/1000 the mass of the sun
A family friend just read on the internet that mars will be bigger than the moon in the sky this month, they know that you're taking astronomy. what is a good asnwer (assuming you want to be trufthful and helpful?
No, Mars didn't do any of the 15 previous time this internet rumor made the rounds (you can use google to double check things that sound incredible)
There will be a full moon on September 24 2018. when will the moon be full again?
October 24, 2018
