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Questions and Answers
What is the average distance between Earth and Sun known as?
What is the average distance between Earth and Sun known as?
- Light year (ly)
- Fermi (f)
- Astronomical Unit (AU) (correct)
- Parsec
What is the distance travelled by light in vacuum in one year known as?
What is the distance travelled by light in vacuum in one year known as?
- Fermi (f)
- Light year (ly) (correct)
- Parsec
- Angstrom (A)
What is the unit of length in the SI system?
What is the unit of length in the SI system?
- Fermi (f)
- Angstrom (A)
- Metre (m) (correct)
- Micron
What is the distance at which an arc of length 1 AU subtends an angle of 1 second known as?
What is the distance at which an arc of length 1 AU subtends an angle of 1 second known as?
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Which unit is equal to 10^-10 meters?
Which unit is equal to 10^-10 meters?
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Study Notes
Astronomy and Units
- The average distance between Earth and Sun is known as an astronomical unit (AU).
- The distance travelled by light in vacuum in one year is known as a light-year.
- The unit of length in the SI system is meters.
- The distance at which an arc of length 1 AU subtends an angle of 1 second is known as a parsec.
- The unit equal to 10^-10 meters is an angstrom (Å).
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