Astronomy

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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


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