Astronomy Exam 1 Review ACTUAL
QUESTIONS AND CORRECT ANSWERS
How is a planet different than a star?
Planets are larger than stars.
Planets reflect light while stars produce their own light.
Stars move faster in the sky than planets.
Planets are brighter than stars. - CORRECT ANSWERS Planets reflect
light while stars produce their own light.
Which of the following is the largest?
the diameter of Earth
the diameter of the Moon
the diameter of the Sun
the distance from Earth to the Sun - CORRECT ANSWERS the distance
from Earth to the Sun
The Sun is within the field of view shown of Figure 1-11. In other words, it
cannot be found outside the field of view shown in Figure 1-11.
True or False - CORRECT ANSWERS true. It is a figure of our galaxy
The Sun is
a star which generates its own energy.
1 AU from Earth.
visible by its own light emission.
,all of the other choices. - CORRECT ANSWERS all of the above
The diameter of a typical star (the sun) is approximately____ times larger than
the diameter of a typical planet (the Earth)
10
100
1000 - CORRECT ANSWERS 100
Which of the following is smallest in size?
diameter of a gas giant planet (150,000 km)
1 AU (149,598,000 kilometers)
1 light-second, which is the distance light travels in one second (300,000 km)
size of a typical star (1.4 million km) - CORRECT ANSWERS diameter
of a gas giant planet (150,000 km)
Based on observations of the Universal expansion, the age of the Universe is
about ________.
14 billion years
15 trillion years
14,000 years
14 million year - CORRECT ANSWERS 14 billion years
Light takes approximately one second to travel from the Earth to the Moon.
This means that the Moon is approximately
3,000 kilometers from the Earth
twice the distance from the Earth to the Sun
, 300,000 kilometers from the Earth
1 light year from the Earth
1 astronomical unit from the Earth - CORRECT ANSWERS 300,000
kilometers from the Earth
Which of the following best describes the Milky Way Galaxy? Choose the best
answer.
a spiral galaxy with a disk about 80,000 light-years in diameter and containing
about 100,000 stars
a spherically shaped collection of stars including our solar system and about a
dozen other solar systems, stretching about 4 light-years in diameter
a spiral galaxy with a disk about a billion kilometers in diameter and containing
between 100 million and 1 billion stars
a spherically shaped collection of about 1 million stars that is about 100 light-
years in diameter
a spiral galaxy with a disk about 80,000 light-years in diameter and containing
between 100 billion and 1 trillion stars - CORRECT ANSWERS
105,700 light years diameter
150 billion - 250 billion stars
"a spiral galaxy with a disk about 80,000 light-years in diameter and containing
between 100 billion and 1 trillion stars"
t/ f A light year is the amount of time light takes to travel in one year. -
CORRECT ANSWERS false
QUESTIONS AND CORRECT ANSWERS
How is a planet different than a star?
Planets are larger than stars.
Planets reflect light while stars produce their own light.
Stars move faster in the sky than planets.
Planets are brighter than stars. - CORRECT ANSWERS Planets reflect
light while stars produce their own light.
Which of the following is the largest?
the diameter of Earth
the diameter of the Moon
the diameter of the Sun
the distance from Earth to the Sun - CORRECT ANSWERS the distance
from Earth to the Sun
The Sun is within the field of view shown of Figure 1-11. In other words, it
cannot be found outside the field of view shown in Figure 1-11.
True or False - CORRECT ANSWERS true. It is a figure of our galaxy
The Sun is
a star which generates its own energy.
1 AU from Earth.
visible by its own light emission.
,all of the other choices. - CORRECT ANSWERS all of the above
The diameter of a typical star (the sun) is approximately____ times larger than
the diameter of a typical planet (the Earth)
10
100
1000 - CORRECT ANSWERS 100
Which of the following is smallest in size?
diameter of a gas giant planet (150,000 km)
1 AU (149,598,000 kilometers)
1 light-second, which is the distance light travels in one second (300,000 km)
size of a typical star (1.4 million km) - CORRECT ANSWERS diameter
of a gas giant planet (150,000 km)
Based on observations of the Universal expansion, the age of the Universe is
about ________.
14 billion years
15 trillion years
14,000 years
14 million year - CORRECT ANSWERS 14 billion years
Light takes approximately one second to travel from the Earth to the Moon.
This means that the Moon is approximately
3,000 kilometers from the Earth
twice the distance from the Earth to the Sun
, 300,000 kilometers from the Earth
1 light year from the Earth
1 astronomical unit from the Earth - CORRECT ANSWERS 300,000
kilometers from the Earth
Which of the following best describes the Milky Way Galaxy? Choose the best
answer.
a spiral galaxy with a disk about 80,000 light-years in diameter and containing
about 100,000 stars
a spherically shaped collection of stars including our solar system and about a
dozen other solar systems, stretching about 4 light-years in diameter
a spiral galaxy with a disk about a billion kilometers in diameter and containing
between 100 million and 1 billion stars
a spherically shaped collection of about 1 million stars that is about 100 light-
years in diameter
a spiral galaxy with a disk about 80,000 light-years in diameter and containing
between 100 billion and 1 trillion stars - CORRECT ANSWERS
105,700 light years diameter
150 billion - 250 billion stars
"a spiral galaxy with a disk about 80,000 light-years in diameter and containing
between 100 billion and 1 trillion stars"
t/ f A light year is the amount of time light takes to travel in one year. -
CORRECT ANSWERS false
