Front

What is a light year?

Back

A light year is the distance that light travels in one year.

Front

What is an astronomical unit (AU)?

Back

An astronomical unit (AU) is the distance between the Earth and the Sun.

Front

What unit is best for measuring the length of a classroom?

Back

Meters are best for measuring the length of a classroom.

Front

What do we use astronomical units to measure?

Back

We use astronomical units to measure distances in our solar system.

Front

When is it appropriate to use light years for measurement?

Back

Light years are appropriate for measuring distances from the Milky Way to its closest galaxy.

Front

What is the speed of light?

Back

The speed of light is approximately 299,792 kilometers per second.

Front

How many kilometers are in a light year?

Back

A light year is about 9.46 trillion kilometers.

Front

What is the distance from the Earth to the Sun in AU?

Back

The distance from the Earth to the Sun is 1 AU.

Front

What is the significance of the astronomical unit in space exploration?

Back

The astronomical unit helps scientists communicate and calculate distances within our solar system.

Front

What is the difference between a light year and an astronomical unit?

Back

A light year measures distance based on the speed of light, while an AU measures the distance between the Earth and the Sun.