Light Year

The distance light can travel in one year is ______________

• 15,000 kilometers

• 1 light-year

• 15 Astronomical Units

• 6,000 miles

Which unit of measurement is used to measure distances within our solar system?

• inches

• kilometers

• miles

• Astronomical units

What unit of measurement is used to calculate distance in our universe?

• astronomical units

• kilometers

• light years

• parsecs

One light year is equal to:

• 12 million million kilometres

• 9.5 million million kilometres

• 5.5 million million kilometres

• 9 million kilometres

What is the time taken for the light to travel between the Sun and Earth?

• 4 minutes

• 8 minutes

• 12 minutes

• 2 minutes

a collection of stars around a gravitational center.

• quasar

• nebula

• universe

• galaxy

Which unit of measure would be used to measure the distance from our solar system to the center of the MIlky Way?

• pc

• ly

• AU

• km

Scientists use the light-year to describe the relationships between objects in space. What does a light-year measure?

• the distance that light can travel in one year

• the brightness of light that travels through space

• the number of years it takes light to travel to Earth

• the time it takes light to travel 1 million km

What is the distance of Andromeda Galaxy measured from the Earth?

• 1.7 million light years

• 2.2 million light years

• 28 million light years

Proxima Centauri is ______ light years away.

• 6.8

• 2.5

• 4.3

• 5.4