©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 1:25PM A+
ASTRO 101 - Final Exam Questions And
Answers |Latest 2025 | Guaranteed Pass.
Constellations and the moon appear to move across the sky at night because - Answer✔the
earth spins on its axis
T/F: in one day Earth rotates exactly once around it's axis - Answer✔false
What causes Earth's seasons? - Answer✔23.5 degree tilt of Earth's rotational axis
a total lunar eclipse occurs - Answer✔during the full moon phase
T/F: our galaxy is about 1 million times bigger than Earth - Answer✔false
T/F: The stars in a constellation are physically close to one another - Answer✔false
T/F: The Solar Day is longer than a Sidereal Day - Answer✔true
T/F: The seasons are caused by the precession of Earth's axis - Answer✔false
T/F A lunar eclipse can occur only during the full phase. - Answer✔true
T/F: The angular diameter of an object is inversely proportional to its distance from the
observer - Answer✔true
T/F: If we know the distance of an object from Earth, we can determine the object's size by
measuring its parallax - Answer✔false
If Earth rotated twice as fast as it currently does, but its motion around the Sun stayed the
same, then - Answer✔the night would be half as long
When a thin crescent of the Moon is visible just before sunrise, the Moon is in its -
Answer✔waning phase
If the Moon's orbit were a little larger, solar eclipses would be - Answer✔more likely to be
annular
If the Moon orbited Earth twice as fast, but in the same orbit, the frequency of solar eclipses
would - Answer✔stay the same
Considering the Moon's phases, everyone on Earth sees - Answer✔the same phase in 24 hours
1
, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 1:25PM A+
How did the geocentric model account for day and night on Earth? - Answer✔the sun orbited
the earth
Copernicus' important contribution to astronomy was - Answer✔proposing a model that easily
explained the retrograde motion of the planets
Who published the first astronomical observations made with a telescope? - Answer✔Galileo
Earth is closer to the Sun in January than in July. Therefore, in accord with Kepler's second law: -
Answer✔Earth orbits faster in January
how many meters in 3.6 kilometers? - Answer✔36,100
1 km =
place the following prefixes in order from smallest to largest:
micro
centi
nano
milli - Answer✔nano
micro
milli
centi
Match the prefix with the scientific notation for the order of magnitude of the number.
kilo
mega
giga
tera
a. 10^3
b. 10^12
c. 10^9
d. 10^6 - Answer✔kilo - a. 10^3
mega - d. 10^6
2
, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 1:25PM A+
giga - c. 10^9
tera - b. 10^12
Calculate, using Newton's law of gravity, the size of the force of attraction between Earth and a
mass of 9.52 kg located on the surface of Earth. Data: Distance to the center of Earth from the
surface = 6370 km. Mass of Earh = 5.98x1024 kg. Gravitational constant G=6.67x10-11 Nm2/kg2
- Answer✔92.3
T/F: Aristotle proposed that all planets revolve around the sun - Answer✔false
T/F: During retrograde motion, planets actually stop and move backward in space. -
Answer✔false
T/F: The heliocentric model of the universe holds that Earth is at the center and everything else
moves around it. - Answer✔false
T/F: Copernicus's theories gained widespread scientific acceptance during his lifetime. -
Answer✔false
T/F Galileo's observations of the sky were made with the naked eye. - Answer✔false
T/F The speed of a planet orbiting the Sun is independent of the planet's position in the orbit -
Answer✔false
T/F: Keppler's laws only hold for the 6 planets known in his time - Answer✔false
T/F: You throw a baseball to someone, before the ball is caught, it is temporarily in orbit around
the Earth's center - Answer✔true
a major flaw in copernicus's model was that it still had - Answer✔circular orbits
a calculation of how long it would take a planet to orbit the sun would be closely related to
Kepler's - Answer✔third law of planetary distances
If Earth's orbit around the Sun were twice as large as it is now, the new year would be -
Answer✔more than 2 current earth years
An asteroid with an orbit lying entirely inside Earth's - Answer✔has an orbital semi-major axis
of less than 1 AU
Newton's law of gravity states that the force between two objects - Answer✔increases with
mass
Gravity is - Answer✔always an attractive force
in this wave motion people stand up and sit down as the wave passes, what type of wave is
this? - Answer✔transverse
the distance between successive wave crests defines the ____ of a wave - Answer✔wavelength
3
ASTRO 101 - Final Exam Questions And
Answers |Latest 2025 | Guaranteed Pass.
Constellations and the moon appear to move across the sky at night because - Answer✔the
earth spins on its axis
T/F: in one day Earth rotates exactly once around it's axis - Answer✔false
What causes Earth's seasons? - Answer✔23.5 degree tilt of Earth's rotational axis
a total lunar eclipse occurs - Answer✔during the full moon phase
T/F: our galaxy is about 1 million times bigger than Earth - Answer✔false
T/F: The stars in a constellation are physically close to one another - Answer✔false
T/F: The Solar Day is longer than a Sidereal Day - Answer✔true
T/F: The seasons are caused by the precession of Earth's axis - Answer✔false
T/F A lunar eclipse can occur only during the full phase. - Answer✔true
T/F: The angular diameter of an object is inversely proportional to its distance from the
observer - Answer✔true
T/F: If we know the distance of an object from Earth, we can determine the object's size by
measuring its parallax - Answer✔false
If Earth rotated twice as fast as it currently does, but its motion around the Sun stayed the
same, then - Answer✔the night would be half as long
When a thin crescent of the Moon is visible just before sunrise, the Moon is in its -
Answer✔waning phase
If the Moon's orbit were a little larger, solar eclipses would be - Answer✔more likely to be
annular
If the Moon orbited Earth twice as fast, but in the same orbit, the frequency of solar eclipses
would - Answer✔stay the same
Considering the Moon's phases, everyone on Earth sees - Answer✔the same phase in 24 hours
1
, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 1:25PM A+
How did the geocentric model account for day and night on Earth? - Answer✔the sun orbited
the earth
Copernicus' important contribution to astronomy was - Answer✔proposing a model that easily
explained the retrograde motion of the planets
Who published the first astronomical observations made with a telescope? - Answer✔Galileo
Earth is closer to the Sun in January than in July. Therefore, in accord with Kepler's second law: -
Answer✔Earth orbits faster in January
how many meters in 3.6 kilometers? - Answer✔36,100
1 km =
place the following prefixes in order from smallest to largest:
micro
centi
nano
milli - Answer✔nano
micro
milli
centi
Match the prefix with the scientific notation for the order of magnitude of the number.
kilo
mega
giga
tera
a. 10^3
b. 10^12
c. 10^9
d. 10^6 - Answer✔kilo - a. 10^3
mega - d. 10^6
2
, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 1:25PM A+
giga - c. 10^9
tera - b. 10^12
Calculate, using Newton's law of gravity, the size of the force of attraction between Earth and a
mass of 9.52 kg located on the surface of Earth. Data: Distance to the center of Earth from the
surface = 6370 km. Mass of Earh = 5.98x1024 kg. Gravitational constant G=6.67x10-11 Nm2/kg2
- Answer✔92.3
T/F: Aristotle proposed that all planets revolve around the sun - Answer✔false
T/F: During retrograde motion, planets actually stop and move backward in space. -
Answer✔false
T/F: The heliocentric model of the universe holds that Earth is at the center and everything else
moves around it. - Answer✔false
T/F: Copernicus's theories gained widespread scientific acceptance during his lifetime. -
Answer✔false
T/F Galileo's observations of the sky were made with the naked eye. - Answer✔false
T/F The speed of a planet orbiting the Sun is independent of the planet's position in the orbit -
Answer✔false
T/F: Keppler's laws only hold for the 6 planets known in his time - Answer✔false
T/F: You throw a baseball to someone, before the ball is caught, it is temporarily in orbit around
the Earth's center - Answer✔true
a major flaw in copernicus's model was that it still had - Answer✔circular orbits
a calculation of how long it would take a planet to orbit the sun would be closely related to
Kepler's - Answer✔third law of planetary distances
If Earth's orbit around the Sun were twice as large as it is now, the new year would be -
Answer✔more than 2 current earth years
An asteroid with an orbit lying entirely inside Earth's - Answer✔has an orbital semi-major axis
of less than 1 AU
Newton's law of gravity states that the force between two objects - Answer✔increases with
mass
Gravity is - Answer✔always an attractive force
in this wave motion people stand up and sit down as the wave passes, what type of wave is
this? - Answer✔transverse
the distance between successive wave crests defines the ____ of a wave - Answer✔wavelength
3
