Author Question: Light takes approximately one second to travel from the Earth to the Moon. This means that the Moon ... (Read 78 times)

Jkov05 · **on:** Jul 27, 2018

Light takes approximately one second to travel from the Earth to the Moon. This means that the Moon is approximately

A) 1 astronomical unit from the Earth.
B) 300,000 kilometers from the Earth.
C) 3,000 kilometers from the Earth.
D) 1 light year from the Earth.
E) twice the distance from the Earth to the Sun.

Question 2

Which of the following statements does not use the term light-year in an appropriate way?

A) It will take me light-years to complete this homework assignment.
B) It's about 4 light-years from here to Alpha Centauri.
C) A light-year is about 10 trillion kilometers.
D) It will take the Voyager spacecraft about 20,000 years to travel just 1 light-year.
E) The Milky Way Galaxy is about 100,000 light-years in diameter.