1|Page
ASTRO 1 EXAM 1 NEWEST 2025/2026 ACTUAL EXAM
COMPLETE 100 QUESTIONS AND 100%CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+UPDATED VERSION
How did Kepler himself originally state this second law?
A: The speed of a planet in its orbit is directly proportional
to its
distance from the Sun.
B: The speed of a planet in its orbit is inversely
proportional to
its distance from the Sun.
C: All planets move at a constant speed in their orbit
around the Sun.
,2|Page
D: A line joining a planet and the Sun sweeps out equal
areas in equal intervals of time.
E: None of the above. - ANSWER-D: A line joining a planet
and the Sun sweeps out equal areas in equal intervals of
time.
What was Kepler's Third Law?
A: The farther away a planet is from the Sun, the shorter a
time it takes for it to complete one orbit around the Sun.
B: The cube of the time period of the planet's orbit is
proportional to the square of its average distance from the
Sun (P^3 is proportional to a^2). C: 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).
,3|Page
D: The time period for an orbit of a planet is proportional to
the cube of its average distance from Sun (in other words
P is proportional to a^3).
E: The closer a planet is to the Sun, the longer a time it
takes for it to complete orbit around the Sun. - ANSWER-
C: 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).
Saturn is about 10 times as far from the Sun as Earth is (a
= 10 AU,
roughly). About how many times Earth orbit the Sun in the
time
it takes Saturn to orbit just once?
, 4|Page
A: About 3.
B: About 5
C: About 10.
D: About 20.
E: About 30. - ANSWER-E: About 30.
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?
A: the discovery of Pluto
B: the discovery of Neptune
C: the discovery that the Earth is rotating
ASTRO 1 EXAM 1 NEWEST 2025/2026 ACTUAL EXAM
COMPLETE 100 QUESTIONS AND 100%CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+UPDATED VERSION
How did Kepler himself originally state this second law?
A: The speed of a planet in its orbit is directly proportional
to its
distance from the Sun.
B: The speed of a planet in its orbit is inversely
proportional to
its distance from the Sun.
C: All planets move at a constant speed in their orbit
around the Sun.
,2|Page
D: A line joining a planet and the Sun sweeps out equal
areas in equal intervals of time.
E: None of the above. - ANSWER-D: A line joining a planet
and the Sun sweeps out equal areas in equal intervals of
time.
What was Kepler's Third Law?
A: The farther away a planet is from the Sun, the shorter a
time it takes for it to complete one orbit around the Sun.
B: The cube of the time period of the planet's orbit is
proportional to the square of its average distance from the
Sun (P^3 is proportional to a^2). C: 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).
,3|Page
D: The time period for an orbit of a planet is proportional to
the cube of its average distance from Sun (in other words
P is proportional to a^3).
E: The closer a planet is to the Sun, the longer a time it
takes for it to complete orbit around the Sun. - ANSWER-
C: 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).
Saturn is about 10 times as far from the Sun as Earth is (a
= 10 AU,
roughly). About how many times Earth orbit the Sun in the
time
it takes Saturn to orbit just once?
, 4|Page
A: About 3.
B: About 5
C: About 10.
D: About 20.
E: About 30. - ANSWER-E: About 30.
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?
A: the discovery of Pluto
B: the discovery of Neptune
C: the discovery that the Earth is rotating
