Astro 7N Exam 1 Latest Update 2025-2026 100 Questions and 100% Verified Correct Answers Guaranteed A+
A moon orbits is exactly the same plane as the planet orbits its star. How often does this planet experience a solar eclipse? - CORRECT ANSWER: once every orbit of its moon (its month)
a new planet orbits its star faster than the earth orbits the sun and it rotates more slowly than he earth rotates. which is true - CORRECT ANSWER: the new planet has a shorter year than earth and a longer day than earth
A photon's___can be measured to determine its energy - CORRECT ANSWER:
wavelengths or frequency
A star(sun) has a surface area temperature of 50,000 kelvin, in which region of
electromagnetic spectrum does its peak brightness occur? - CORRECT ANSWER:
Ultraviolet
According to Newton's Second law of motion, if the net force acting on the object increases while the mass of the object remains constant, what happens to acceleration -
CORRECT ANSWER: acceleration increases
And, on the opposite site of the orbit, when the northern hemisphere is tilted the farther away from the sun, the average daily temperature is marked as____, suggesting that
the norther hemisphere is experiencing___ - CORRECT ANSWER: cool;winter
approximately two weeks after a solar eclipse, what phase will the moon be in? -
CORRECT ANSWER: full moon
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it takes about a month to get a new moon - so a full moon is the half mark (2 weeks)
Asteriods - CORRECT ANSWER: • remnants of the Solar System's formation — rocks left over when the planets form •
many are in the "Asteroid Belt" between Mars and Jupiter
• asteroid orbits are typically slightly elliptical
• a few major types exist: carbon-rich, metallic, and silicate (stony)
• we see asteroids by reflected sunlight; they do not shine visibly on their own • the orbits of some asteroids intersect Earth's orbit, and lead to meteors •
most are less than 1 kilometer in size, but some are bigger
• like comets, asteroids tend to move very slowly across the sky to a viewer on Earth
Asterisms - CORRECT ANSWER: a small group of stars that are used to form a picture or represent an object Ibig dipper)
drawn by connecting the brightest, easiest-to-see, starts as seen from earth
brightest start tends to be the one closest to earth
At approximately what time does the third quarter Moon rise? - CORRECT ANSWER:
sunrise 6am
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At midnight on March 21, we would be looking at___assuming the sky is clear -
CORRECT ANSWER: virgo
At winter solstice, december 21, at noon, the sun is in - CORRECT ANSWER:
sagittarius
Blackbody spectrum - CORRECT ANSWER: higher temperature = more light in total,
and a peak intensity at a shorter wavelength (or at a bluer color)
- e.g., Object A has a temperature of 5000 kelvins while object B has kelvins of 500.
- Object A
Which one has blackbody spectrum peak at a shorter wavelength
Which one will look brighter in the infrared wavelength region?-Object A
Both the mood and the sun rise for the same reason, it is b/c of: - CORRECT ANSWER: the rotation of the earth
Comets - CORRECT ANSWER: A few kilometers in size •
Made of ice (both water ice and "dry ice") and dust — remnants of Solar System formation •
Tails pointing away from the Sun develop due to the solar wind • Shine by reflected sunlight — i.e., comets do not produce light of their own
• Highly-elliptical orbits that take them far from the Sun; as would be predicted by Kepler's 2nd Law, comets spend most of their time in the outer reaches of the Solar System — they zip by the inner Solar System and travel back out very quickly •
Comets move slowly across the sky from our perspective on Earth •
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