ASTRO 7N EXAM SCRIPT TESTED
QUESTIONS FULL SOLUTION PREMIUM
STUDY MATERIAL
●● Two planets have the same radius. If Planet A is 5 times more mass
than Planet B, how does gravity differ on the surfaces of the two
planets?
Answer: Gravity is 5 times stronger on planet A
●● Say that there were a planet X in our Solar System with a mass 1/4
the mass of Earth and a radius 1/2 the radius of Earth. How will the
gravity on its surface compare to the surface gravity of Earth?
Answer: Surface gravity on planet X is the same as on earth
●● A planet in a nearly circular orbit with its rotation axis tilted by 5
degrees relative to its orbital plane around its star would ...
Answer: Have seasons that are not very different from each other as
compared to Earth
●● The rotation axis of the Earth is ...
Answer: Tilted at about 23 degrees relative to the axis of the Earth's
orbit around the Sun
,●● In the diagram above, what season and planet is being represented by
the red X on the planet on the left in orbit around the Sun?
Answer:
●● When is the waning gibbous moon highest in the sky?
Answer: About 3 am
●● What phase is the Moon in, when observed by the person standing on
the Earth in the diagram above?
Answer: New
●● At what time will the Moon set on the day of a Solar eclipse?
Answer: Sunset
●● Stars that are in the same constellation ...
Answer: are likely to be at very different distances from us.
●● The "North Star" is a star in the constellation of Ursa Minor, which
lies just above the North pole of Earth. Which of the following is true?
Answer: Ursa Minor is a Zodiac constellation in the summer but not in
the winter
, ●● A particular Zodiac constellation is high in the sky at midnight in
April. Where will it be in October?
Answer: Near the Sun in the daytime sky
●● What do you expect the spectrum of an object that is 1,000,000
Kelvin to be like?
Answer: It should peak at X-ray wavelengths
●● As compared to a cool star, a hotter star emits ...
Answer: Shorter wavelength, higher frequency, bluer color
●● Radio waves can travel large distances without interference because
...
Answer: They have longer wavelengths than visible light
●● Compared to ultraviolet radiation, X-rays have a wavelength that is
...
Answer: Shorter
●● Star A is 4000 K, and Star B is 8000 K. Which of the following is
true?
Answer: The color of Star A is redder than Star B
QUESTIONS FULL SOLUTION PREMIUM
STUDY MATERIAL
●● Two planets have the same radius. If Planet A is 5 times more mass
than Planet B, how does gravity differ on the surfaces of the two
planets?
Answer: Gravity is 5 times stronger on planet A
●● Say that there were a planet X in our Solar System with a mass 1/4
the mass of Earth and a radius 1/2 the radius of Earth. How will the
gravity on its surface compare to the surface gravity of Earth?
Answer: Surface gravity on planet X is the same as on earth
●● A planet in a nearly circular orbit with its rotation axis tilted by 5
degrees relative to its orbital plane around its star would ...
Answer: Have seasons that are not very different from each other as
compared to Earth
●● The rotation axis of the Earth is ...
Answer: Tilted at about 23 degrees relative to the axis of the Earth's
orbit around the Sun
,●● In the diagram above, what season and planet is being represented by
the red X on the planet on the left in orbit around the Sun?
Answer:
●● When is the waning gibbous moon highest in the sky?
Answer: About 3 am
●● What phase is the Moon in, when observed by the person standing on
the Earth in the diagram above?
Answer: New
●● At what time will the Moon set on the day of a Solar eclipse?
Answer: Sunset
●● Stars that are in the same constellation ...
Answer: are likely to be at very different distances from us.
●● The "North Star" is a star in the constellation of Ursa Minor, which
lies just above the North pole of Earth. Which of the following is true?
Answer: Ursa Minor is a Zodiac constellation in the summer but not in
the winter
, ●● A particular Zodiac constellation is high in the sky at midnight in
April. Where will it be in October?
Answer: Near the Sun in the daytime sky
●● What do you expect the spectrum of an object that is 1,000,000
Kelvin to be like?
Answer: It should peak at X-ray wavelengths
●● As compared to a cool star, a hotter star emits ...
Answer: Shorter wavelength, higher frequency, bluer color
●● Radio waves can travel large distances without interference because
...
Answer: They have longer wavelengths than visible light
●● Compared to ultraviolet radiation, X-rays have a wavelength that is
...
Answer: Shorter
●● Star A is 4000 K, and Star B is 8000 K. Which of the following is
true?
Answer: The color of Star A is redder than Star B
