Astronomy
Two coordinates of the celestial eduitorial coordinate system are [select 2]
-right ascension -declination
What is the altitude of the horizon
0 degrees
What is the altitude of the north celestial pole for an observer located on the earths equator
0 degrees
If it takes mercury 0.21 years to orbit the sun how long in years will it take mercury to come back to its original place in our night sky
0.2658
How many meters across is a road sign that has an angular size of 120 arc seconds and is 1 km away
0.582
How many millimeters will a 17 mm wave length radiowave be shifted if the source is traveling away from the observer at 12,000,000 M/S
0.68
What is the force of gravity acting between the sun and an 80 kg person who is 0.8 AU away from the sun
0.747
What is the peak wavelength of light coming from a star with a temperature of 2500 K
1,160
If the peak wave length of a star at rest is 350 nm but astronomers on earth observe that is has been shifted by 2.25 nm then how fast is the star moving relative to the earth
1,928,571
If the sun was moved farther away and suddenly appeared four times feature in the sky how many times further away would it be
2
If it takes Venus 0.7 years to orbit the sun how long in years will it take Venus to come back to its original place in our night sky
2.33
What is the linear diameter in meters of an object that has an angular diameter of 10 arc seconds in a distance of 50,000 m
2.424
Suppose scientist discover a new mini planet just beyond earths orbit that takes 1.05 years to orbit the sun how long in years would it take for this mini planet to move once all the way around the sky
21
If the sun were suddenly moved five times further away how many times fainter would it be
25
What is the azimuth of due west
270 degrees
Star A is 200 times brighter than star B how many times hotter is star A than star B
3.76
What is the orbital. In years of a planet with a semi major axis of 10 AU
31.62
What is the angular diameter in arc seconds of an object that has a linear diameter of 5 m in a distance of 3 km
343.78
If the distance to a star was suddenly cut in half how many times brighter with the star appear
4
If the peak wave length of a star at rest is 660 nm but astronomers on earth observed that it has been shifted by 0.001 nm then how fast is a star moving relative to earth
454
If the peak wave length of a star at rest is 725 nm than what peak a wave length is observed when the star is traveling 800,000 M/S towards the earth
723.07
What is the angular diameter in arc seconds of an object that has a linear diameter of 75 cm in a distance of 2 km
77.35
What is the semimajor axis in AU of a planet with an orbital period of 25 years
8.55
Star A is three times hotter than star B how many times brighter is star A than star B
81
Two stars appear at the same brightness in the sky but star A is three times further away than star B how many times more energy is star a giving off than star b
9
What is the altitude of the north celestial pole for an observer standing on the north pole of the earth
90 degrees
What is the force of gravity acting between the earth and 100 kg person standing on the surface
981.3
In Michigan the sun will reach its highest point in the sky on
A solstice
Ptolemy improved the geocentric model by ...
Adding epicycles and deferents
The angle measured up from the horizon is called the...
Altitude
How can you calculate the peak altitude of the sun in the sky
By using the observers latitude and the sons declination
Why were constellations essential for ancient peoples
Constellations provided a calendar to support agriculture
According to the small angle equation if an object at a fixed distance is suddenly shrunk to a smaller size the angular size will
Decrease
On an equinox the sun sets...
Due west
Copernicus was the first person to suggest that the Sun is at the center of our solar system
False
Copernicus was the first to be able to prove that the earth orbit around the sun
False
The change in seasons is caused by the change in the suns
NOT azimuth
Which of the following was not listed as an unexpected benefit of astronomy research
New methods for treating cancer
The point directly overhead is called the...
Zenith
What is the temperature of the star in kelvin if it's peak wave length is 425 nm
6823
What is the distance in meters of an object that has an angular diameter of 30 arc seconds and a linear diameter of 10 cm
687.55
One of the main objections to the heliocentric model was that
We do not feel the earth moving
Your noon time shadow will be the longest on which day of the year
Winter solstice
If it takes Jupiter 13 years to orbit the sun how long in years will it take Jupiter to go once around the sky as viewed from earth
1.0833
If it takes a planet 5 years to orbit the sun, how long (in years) will it take the planet to go all the way around our sky once?
1.25
If it takes mars 2.5 years to orbit the sun how long in years will it take Mars to go once around the sky as viewed from earth
1.6
What is the distance (in meters) of an object that has an angular diameter of 100 arc seconds and a linear diameter of 50 m
103,132.5
Two stars in the sky give off the same amount of total energy for*a appears 121 times fainter in our night sky than star B how many times further away is Star A than star B
11
The length of a day on an equinox is
12 hours
What is the linear diameter in meters of an object that has an angular diameter of 110 arc seconds in a distance of 25,000 m
13.325
What is the angular diameter and arc seconds of an object that has a linear diameter of 23 m in a distance of 1.5 km
1382.04
What is the force of gravity acting between the earth and a 60 kg person who is 400 km above the surface of the earth
521.28
What is the peak wavelength of light from a star with a temperature of 5300 K
547
If the peak wave length of a star at rest is 550 nm then what peak wave length is observed when the stars traveling 150,000 m/s away from the earth
550.275
If it takes 1.2 years to orbit the sun how long in years will it take the planet to go all the way around our sky once
6
On the summer solstice the sun sets
North of west
When a planet is on the opposite side of the sky as the sun we call this
Opposition
Aristotle believed that the planets
Orbited the earth in circular orbits
In the southern hemisphere the sun will reach its highest point in the sky on...
Our winter solstice
On the winter solstice the sun will rise...
South of east
If the new moon is rising what time is it
Sun rise
If the new moon is setting what time is it
Sun set
Latitude measures up/down from...
The equator
The zero point of longitude is...
The prime meridian
Suppose a balloon is slowly letting out air and becoming smaller at the same time it is being brought closer to an observer. According to the small angle equation the angular size of the balloon will
There's not enough information to say for sure
Describe how the stars in a constellation are connected to one another
They are completely unrelated to one another
In Ptolemys model it is possible to have a planetary orbit without retrograde motion
True
Our living bodies ultimately come from nonliving material found on earth
True
Professional astronomers in general know very few constellations
True
