ASTR 5

Which of the following is the most likely distance to a star in the Big Dipper?

10 light years

Which of these numbers is the largest and by how many times: 1012 and 108?

10^12 by 10,000 times

Betelgeuse rises at 4:20pm tonight. What time will it rise one month from now?

2:20pm

Star A has RA = 8hr and will transit tonight at 11pm. What time will a star with RA = 5hr transit tonight?

8pm

Which of the following is true about eclipses?

A partial solar eclipse occurs when only some of the Sun is blocked by the Moon.

Which of the following statements is NOT true?

According to Kepler's 2nd law, the Earth will be moving fastest when it is farthest from the Sun.

Which of these definitions is correct?

All answers are correct.....Zenith = point directly above where ever you are. Altitude = angle of an object above the horizon. Local noon = When the Sun is at its highest point (crosses your meridian) Circumpolar stars = Stars that never dip below the horizon

Which of these statements is true?

All of the answers are correct. An object with low eccentricity will only have a small change in distance from the Sun during its orbit. Planets have low eccentricity orbits. An object with high eccentricity will have a large change in speed during its orbit.

Which of these definitions of moon phases is correct?

All of the definitions are true... Gibbous - more than half of the moon appears lit. Quarter - half the moon appears lit. Full - the entire moon appears lit Crescent - less than half of the moon appears lit.

Which of the following statements is true?

All of the statements are true.... There are more hours of daylight on April 2nd than March 2nd in Los Angeles. If the Earth had no water or atmosphere, the hottest day of the year would be the summer solstice. A location that has long days in the summer will have short days in the winter. A planet with a large tilt would have extreme seasons.

A star is transiting when:

All the answers are correct.... it is either north or south. it is at its highest point in the sky it will reach. it is at the largest altitude that it will have.

Which of the following is true about the astronomical unit (AU)?

All the answers are correct....All the answers are correct. It is smaller than a light year. It is the best unit for measuring distances in our solar system. It is defined as the average distance from the Earth to the Sun.

Topocentric coordinates (altitude and azimuth) for a star:

All the statements are true.... Give the location of that star in the sky. Will be different for observers at two different places on Earth. Will change between now and two hours from now (if the star is not Polaris).

A star is setting (at the horizon to the west). What is the altitude and azimuth for the star?

Altitude = 0, Azimuth = 270

Which of these is true about eclipses?

At any one location on Earth, lunar eclipses will be seen more often than solar eclipses.

What color light has the most energy? Which has the shortest wavelength?

Blue = most energy and shortest wavelength

Which of the following statements is NOT true?

Circumpolar stars are most commonly seen at the equator.

The major mistake that Copernicus's model of the solar system had was:

Copernicus thought that planets orbit the Sun in circles.

Mars is undergoing retrograde motion. In the diagram, what letter shows where Mars must be?

D

Which of these is NOT an observation or discovery made by Galileo?

Discovering Uranus.

Which of the following is the smallest?

Earth

In the geocentric model of the solar system,

Earth is in the middle.

Which of the following statements is true?

Escape velocity is the speed needed to escape the gravity of an object.

Our solar system is made up of the Sun and:

Everything that orbits the Sun.

Match each astronomer to their contribution to astronomy:

First to use a telescope to study the night sky--Galileo Used the law of gravity and the laws of motion to prove Kepler's Laws ---Newton Developed the heliocentric model but only published it after his death ===Copernicus Used epicycles to explain retrograde motion in the geocentric model ----Ptolemy

Which of these parts of our cosmic address is NOT correct?

Galaxy Cluster = Virgo Group

Which of these types of electromagnetic radiation:

Has the least energy---Radio Waves Is used in night vision goggles--- Infrared

Which of these is true about eclipses?

If a solar eclipse is happening today, then a lunar eclipse likely occurred about two weeks ago or will occur two weeks from now.

Which of the following statements is true?

If the Earth did not orbit the Sun, stars would rise at the same time each day.

Which of the following statements is true?

If the Earth didn't orbit the Sun, stars would rise at the same time each day.

Which of the following statements is true?

If you go to the Moon, your mass will stay the same but your weight will change.

Imagine that a star that was 100 light years from Earth exploded. We would see the explosion:

In 100 years

A new asteroid is discovered that is 0.5 AU from the Sun. The asteroid will orbit the Sun:

In less than a year.

As an object gets closer to the Earth, its angular size:

Increases

Precession:

Is the wobbling of the Earth's rotation axis.

Earth is closest to the Sun on January 5th and farthest on July 4th. What day of the year will the Earth be moving the FASTEST around the Sun?

January 5th

A star is located to the northwest. In a few minutes its altitude will most likely be:

Lower

Which of these statements is true?

Many of the elements in our body were made inside of stars.

How did Aristotle show that the Earth was round?

Observing the shadow of the Earth during a lunar eclipse.

Which of the following statements is true?

On the vernal equinox there are 12 hours of daylight everywhere on Earth.

Imagine that you are in Los Angeles and see a total solar eclipse. At the same tie, what would a friend in San Francisco (350 miles away) see?

Partial Solar Eclipse

Particles of light are called:

Photons

Why does the Moon look red during a total lunar eclipse?

Red light bends in Earth's atmosphere enough to reach the Moon.

Which of these stars will be in the sky the longest time in Los Angeles (Lat = 34N)?

Star with declination = 54 deg

Match each ancient site with its astronomical connection.

Stonehenge --Sun rises over Heel Stone on Summer Solstice Great Pyramids --Air shafts point to stars in Orion's Belt Chichen Itza ----Shadow of a snake is visible on the equinoxes Newgrange Passage Tombs ----Rising Sun lights up central chamber on Winter Solstice

Why is it warmer during the summer than during the winter?

Sunlight hits us more directly in the summer.

Which of the following is the largest?

Supercluster

Which of the following statements is NOT true about angular size?

The Sun has a much larger angular size than the Moon.

Which of these is true about the summer solstice?

The Sun will be highest in the sky in the Northern Hemisphere.

The alpha star of a constellation is normally:

The brightest star.

Which of the following is NOT true?

The celestial equator is directly above Earth's North Pole.

Which of these describes a full moon?

The full moon phase comes right after the waxing gibbous phase.

Which of these statements is true?

The new moon is in the sky during the daytime.

Which of these is true about the Moon?

The same side of the Moon always faces the Earth.

Which of these is true about the scientific method?

The scientific method for astronomy has to mostly use observations instead of experiments in a lab to test hypotheses.

Which of the following is true about constellations?

There are a total of 88 constellations.

Why do astronauts float in space?

They are freefalling at the same speed as their spacecraft.

Why do astronauts float in space?

They are freefalling at the same spped as their spacecraft.

What phase of the Moon is shown in the picture here?

Waning Crescent

Which of the following best describes the resaon for the phases of the Moon?

We see different amounts of the lit side of the moon as it orbits the Earth.