Which unit is commonly used to measure distances within our solar system?
A) Light-year
B) Astronomical Unit (AU)
C) Parsec
D) Kilometer
How many kilometers are approximately equal to one Astronomical Unit (AU)?
A) 1,500,000 km
B) 150,000,000 km
C) 15,000,000 km
D) 1,500,000,000 km
What does one Astronomical Unit (AU) represent?
A) Distance from the Earth to the Moon
B) Distance from the Earth to the Sun
C) Distance from the Sun to Pluto
D) Distance from the Sun to the nearest star
Which unit is used to measure distances beyond the solar system?
A) Astronomical Unit (AU)
B) Light-year
C) Meter
D) Kilometer
How far does light travel in one year?
A) 9.46 trillion kilometers
B) 150 million kilometers
C) 1 million kilometers
D) 100 billion kilometers
Which unit is larger, a light-year or an astronomical unit?
A) Astronomical Unit (AU)
B) Light-year
C) They are equal
D) It depends on the planet
Which is the nearest star to the Sun, measured in light-years?
A) Betelgeuse
B) Alpha Centauri
C) Proxima Centauri
D) Sirius
Approximately how many astronomical units are there in one light-year?
A) 100 AU
B) 1,000 AU
C) 63,241 AU
D) 10,000 AU
Which unit is most suitable for measuring the distance between galaxies?
A) Light-year
B) Astronomical Unit
C) Parsec
D) Kilometer
What is the speed of light in a vacuum?
A) 150,000 km/s
B) 300,000 km/s
C) 450,000 km/s
D) 600,000 km/s
Which measurement is used for interstellar distances?
A) Astronomical Unit
B) Light-year
C) Meter
D) Gram
If a star is 4 light-years away, how long does its light take to reach Earth?
A) 4 seconds
B) 4 minutes
C) 4 hours
D) 4 years
The Andromeda Galaxy is approximately how many light-years away from Earth?
A) 2.5 million light-years
B) 250,000 light-years
C) 1 billion light-years
D) 5,000 light-years
A parsec is approximately equal to how many light-years?
A) 3.26 light-years
B) 10 light-years
C) 50 light-years
D) 100 light-years
What is the nearest galaxy to the Milky Way?
A) Andromeda Galaxy
B) Whirlpool Galaxy
C) Sombrero Galaxy
D) Triangulum Galaxy
Which unit is more commonly used in cosmology?
A) Kilometer
B) Astronomical Unit
C) Light-year
D) Parsec
The distance between Earth and Neptune is best measured in:
A) Light-years
B) Astronomical Units
C) Parsecs
D) Nanometers
If a star is 50 light-years away, when did the light we see from it today leave the star?
A) 50 seconds ago
B) 50 minutes ago
C) 50 years ago
D) 500 years ago
How far is one light-year in miles?
A) 5.88 trillion miles
B) 100 million miles
C) 1 billion miles
D) 10 trillion miles
Which unit is NOT used for measuring astronomical distances?
A) Light-year
B) Astronomical Unit
C) Gram
D) Parsec
Which method is used to determine the distance to nearby stars?
A) Spectroscopy
B) Parallax
C) Doppler Effect
D) Gravitational Lensing
How long does sunlight take to reach Earth?
A) 8.3 minutes
B) 1 second
C) 24 hours
D) 12 minutes
A star that is 10 light-years away appears to us as it was how many years ago?
A) 1 year
B) 10 years
C) 100 years
D) 1,000 years
What unit is used to express distances between stars in the Milky Way?
A) Light-year
B) Kilometer
C) Astronomical Unit
D) Meter
Which space probe traveled beyond the Solar System and is still sending data?
A) Voyager 1
B) Hubble Space Telescope
C) Apollo 11
D) Perseverance Rover
What is the approximate distance between the Sun and Pluto?
A) 1 Astronomical Unit
B) 10 Astronomical Units
C) 40 Astronomical Units
D) 100 Astronomical Units
Which of the following distances is the longest?
A) 1 Astronomical Unit
B) 1 Light-year
C) 1 Parsec
D) 1 Kilometer
Which planet is about 1.5 AU from the Sun?
A) Earth
B) Mars
C) Venus
D) Jupiter
Which galaxy is about 2.5 million light-years from the Milky Way?
A) Triangulum Galaxy
B) Sombrero Galaxy
C) Andromeda Galaxy
D) Whirlpool Galaxy
