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AST 1003

Question	Answer
The Sun is completely covered by the Moon during a TOTAL solar eclipse, but not during an ANNULAR solar eclipse because...	The moon is farther from the earth during an annular eclipse than it is during a total eclpise
Suppose it is late afternoon, about an hour before sunset. Which of the following is most likely to be the Sun's azimuth and altitude?	Azimuth NW, altitude 10 degrees
The star Alpha Draconis has a magnitude of 2.4. The star Gamma Orionis has a magnitude of 1.5. Which star appears brighter?	Gamma Orionis
A solar eclipse can only occur near the time of...	New Moon
During the eclipse of the Moon, the lunar surface ofter appears red because...	Refraction or bending of the sun's rays through Earth's atmosphere
As seen from Tampa, at what time of the year is the noon Sun highest in the sky?	Summer solstice
The Sun crosses the equator headed northward at the time of the...	Spring equinox
During the course of the year, the Sun appears to travel along the	ecliptic
Of what significance are the twelve constellations of the zodiac?	The Sun, Moon and planets can be found in them
The point in the sky around which all stars appear to rotate is called the	Celestial pole
A total solar eclipse is considered a rare sight because	The Moon's shadow covers a very small part of the Earth's surface
The compass direction of an object, relative to the cardinal points, is referred to as its	Azimuth
In the modern usage of the term, a constellation refers to	A specific region in the sky with well- defined boundaries
Which planet or planets can never be seen late at night?	Mercury and Venus
What distinguishes the north star, Polaris, from all the others?	The Earth's axis points in the direction of that star
The point in the sky directly above you is called the	Zenith
A planet at opposition would	rise at sunset
If you see a full moon low in the western sky, approximately what time of the day or night is it?	Sunrise
Of the following stars in Orion, which is most likely to be the brightest among those listed?	Beta Orionis
On the magnitude scale, which of the following stars would you need a telescope to see?	Magnitude 20
Spring will begin on March 22. On that day the Sun will set...	due West
Conditions are favorable for an eclipse during an eclipse season. Eclipse seasons occur	Twice a year
Where on Earth would the Sun pass directly overhead at some point during the year?	Within the Tropics, or within +/- 23.5 degrees of the equator
How much of the Moon we see brightly illuminated depends on	It's position relative to the Sun
Which of the following phases are in the correct chronological order?	waxing crescent, first quarter, waxing gibbous, full moon
One reason the weather is warmer in July than in January in the northern hemisphere is that	There are more hours of daylight in July
Eclipses can only occur when the Moon is on or very near	the vernal equinox
People in ancient times distinguished the planets from the stars because the planets	Move relative to the stars
A conventional NASA spacecraft would take ____ to reach the most distant planet in our solar system, and___ to reach the next nearest star.	a few years; several thousand years
What must you do to put an object in orbit around the Earth?	Throw it parallel to the ground at a speed of atleast 5 miles/sec
What is the first stage in the formation of a new star?	the gravitational contraction of a cloud of interstellar gas
The most abundant element in the universe is	hydrogen
The process by which solid particles in the early solar nebula gently collide and stick together to form larger objects, somewhat like a rolling snowball growing larger and larger, is called	accretion
Why do astronauts feel weightless in the International Space Station?	Because the Station is in a constant free- fall around the Earth
A common way of interplanetary spacecraft can be accelerated and have its trajectory changed without the use of fuel is via	a gravitational assist from another planet
The rate of impact cratering on the planets and moons of our solar system	declined dramatically in the first billion years, and has remained nearly constant since then
A contracting cloud of gas will tend to	spin faster and heat up as it contracts
What molecule is the major contributor to the green house effect on Earth?	Carbon Dioxide
The condensation stage in the early history of the solar system refers to the	formation of solid particles as the solar nebula cools
What processes can alter a planets surface?	impact cratering, volcanism, tectonics, erosion
We don't see background stars in pictures of astronauts on the Moon because	the photos were snapshots, exposed for the sunlit surface.
According to the current model of planet formation, the planets have a common orbital plane because	they formed a rotating , pancake- shaped cloud of gas
According to the new definition of "planet" recently adopted by the International Astronomical Union, Pluto no longer qualifies because	it has not cleared the neighborhood around its orbit
One sentence describing the difference in size and composition of the Terrestrial and Jovian planets?	A larger variety of compounds condense at lower temperatures far from the sun
In order of increasing abundance , the materials that make up objects in the solar system are	metals; rocky silicates; hydrogen compounds; hydrogen and helium gas
Suppose you want the space craft to be captured into orbit around Mars. which maneuver would be most appropriate?	an aerobraking maneuver
In the early solar system, proto- planets were built up from the merger and coalescence of smaller bodies called	Planetesmals
What do all the planets have in common?	They all revolve in the same direction
When we arrange the terrestrial planets in order of increasing mass, we find that the larger planets tend to have	fewer craters

Created by: 1557886876

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