1
Astro 7N Exam 1 |
latest|COMPREHENSIVE MOST TESTED
(frequently tested) QUESTIONS AND
VERIFIED ANSWERS | GET IT 100%
ACCURATE!!
What two properties of a planet affect the gravity we feel on its surface? -
(ANSWER)mass and radius
What was Kepler's first law? - (ANSWER)Planets revolve around the sun in
elliptical orbits with Sun at one focus of the ellipse
Two planets have the same radius. If Planet A is 5 times more massive than Planet
B, how does gravity differ on the surfaces of the two planets?
A: gravity is 5 times stronger on Planet B
B: gravity is 5 times stronger on Planet A
C: gravity is 25 times stronger on Planet A
D: gravity is 25 times stronger on Planet B
E: gravity is equal on Planet A and Planet B - (ANSWER)B: gravity is 5 times
stronger on Planet A
what best describes the orbit of the earth around the sun? - (ANSWER)an ellipse
that is close to being circular
,2
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?
A: surface gravity on planet X is 2 times weaker than on Earth
B: surface gravity on planet X is 2 times stronger than on Earth
C: surface gravity on planet X is the same as on Earth
D: surface gravity on planet X is 8 times stronger than on Earth
E: surface gravity on planet X is 4 times weaker than on Earth - (ANSWER)C:
surface gravity on planet X is the same as on Earth
which of the following does Kepler's Second law support? When a planet is closer
to the sun its speed is ----- than when its far away - (ANSWER)when a planet is
closer to the sun, its speed is greater than when its far away.
A planet in a nearly circular orbit with its rotation axis tilted by 5 degrees relative
to its orbital plane around its star would ...
A: have longer days and nights than those of Earth
B: have very severe seasons compared to Earth
C: have shorter years than those of Earth
D: have shorter days and nights than those of Earth
E: have seasons that are not very different from each other as compared to
Earth's. - (ANSWER)E: have seasons that are not very different from each other as
compared to Earth's.
,3
how did Kepler himself originally state the second law? - (ANSWER)a line joining a
planet and the sun sweeps out equal areas in equal intervals of time
what was Kepler's third law - (ANSWER)The square of the time period for an orbit
of a planet is proportional to cube of its average distance from Sun (in other
words P^2 is proportional to a^3
The rotation axis of the Earth is ...
A: tilted so that it is always pointed directly at the Sun
B: is sometimes parallel and sometimes perpendicular to the axis of the Earth's
orbit around the Sun.
C: tilted at about 23 degrees relative to the axis of the Earth's orbit around the
Sun.
D: perpendicular to the axis of the Earth's orbit around the Sun.
E: parallel to the axis of the Earth's orbit around the Sun. - (ANSWER)C: 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?
A: winter on Earth
B: summer on Earth
C: winter on Venus
D: winter on Uranus
, 4
E: summer on Uranus - (ANSWER)E: summer on Uranus
Besides, the discovery that moons orbit Jupiter, what other discovery made by
Galileo Galilei, with an early telescope, proved that the Earth is not at the center
of the Universe? - (ANSWER)the phases of venus
When is the waning gibbous moon highest in the sky?
A: about 9:00am
B: about 3:00am
C: about noon
D: about midnight
E: about 3:00pm - (ANSWER)B: about 3:00am
We saw that Kepler's 3rd law states that P^2/a^3 = constant. What does P
represent in this equation? - (ANSWER)orbital period, in this case how long it
takes for a satellite to orbit Jupiter
What phase is the Moon in, when observed by the person standing on the Earth
in the diagram above? A: New
B: Third Quarter
C: Waning Gibbous
D: Full
E: First Quarter - (ANSWER)B: Third Quarter
Astro 7N Exam 1 |
latest|COMPREHENSIVE MOST TESTED
(frequently tested) QUESTIONS AND
VERIFIED ANSWERS | GET IT 100%
ACCURATE!!
What two properties of a planet affect the gravity we feel on its surface? -
(ANSWER)mass and radius
What was Kepler's first law? - (ANSWER)Planets revolve around the sun in
elliptical orbits with Sun at one focus of the ellipse
Two planets have the same radius. If Planet A is 5 times more massive than Planet
B, how does gravity differ on the surfaces of the two planets?
A: gravity is 5 times stronger on Planet B
B: gravity is 5 times stronger on Planet A
C: gravity is 25 times stronger on Planet A
D: gravity is 25 times stronger on Planet B
E: gravity is equal on Planet A and Planet B - (ANSWER)B: gravity is 5 times
stronger on Planet A
what best describes the orbit of the earth around the sun? - (ANSWER)an ellipse
that is close to being circular
,2
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?
A: surface gravity on planet X is 2 times weaker than on Earth
B: surface gravity on planet X is 2 times stronger than on Earth
C: surface gravity on planet X is the same as on Earth
D: surface gravity on planet X is 8 times stronger than on Earth
E: surface gravity on planet X is 4 times weaker than on Earth - (ANSWER)C:
surface gravity on planet X is the same as on Earth
which of the following does Kepler's Second law support? When a planet is closer
to the sun its speed is ----- than when its far away - (ANSWER)when a planet is
closer to the sun, its speed is greater than when its far away.
A planet in a nearly circular orbit with its rotation axis tilted by 5 degrees relative
to its orbital plane around its star would ...
A: have longer days and nights than those of Earth
B: have very severe seasons compared to Earth
C: have shorter years than those of Earth
D: have shorter days and nights than those of Earth
E: have seasons that are not very different from each other as compared to
Earth's. - (ANSWER)E: have seasons that are not very different from each other as
compared to Earth's.
,3
how did Kepler himself originally state the second law? - (ANSWER)a line joining a
planet and the sun sweeps out equal areas in equal intervals of time
what was Kepler's third law - (ANSWER)The square of the time period for an orbit
of a planet is proportional to cube of its average distance from Sun (in other
words P^2 is proportional to a^3
The rotation axis of the Earth is ...
A: tilted so that it is always pointed directly at the Sun
B: is sometimes parallel and sometimes perpendicular to the axis of the Earth's
orbit around the Sun.
C: tilted at about 23 degrees relative to the axis of the Earth's orbit around the
Sun.
D: perpendicular to the axis of the Earth's orbit around the Sun.
E: parallel to the axis of the Earth's orbit around the Sun. - (ANSWER)C: 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?
A: winter on Earth
B: summer on Earth
C: winter on Venus
D: winter on Uranus
, 4
E: summer on Uranus - (ANSWER)E: summer on Uranus
Besides, the discovery that moons orbit Jupiter, what other discovery made by
Galileo Galilei, with an early telescope, proved that the Earth is not at the center
of the Universe? - (ANSWER)the phases of venus
When is the waning gibbous moon highest in the sky?
A: about 9:00am
B: about 3:00am
C: about noon
D: about midnight
E: about 3:00pm - (ANSWER)B: about 3:00am
We saw that Kepler's 3rd law states that P^2/a^3 = constant. What does P
represent in this equation? - (ANSWER)orbital period, in this case how long it
takes for a satellite to orbit Jupiter
What phase is the Moon in, when observed by the person standing on the Earth
in the diagram above? A: New
B: Third Quarter
C: Waning Gibbous
D: Full
E: First Quarter - (ANSWER)B: Third Quarter
