Understanding Light Years

What is a light year primarily used to measure?

• Time

• Mass

• Distance

• Speed

How fast does light travel in miles per second?

• 150,000 miles per second

• 200,000 miles per second

• 186,000 miles per second

• 300,000 miles per second

Approximately how many miles does light travel in one year?

• 5.9 billion miles

• 5.9 quadrillion miles

• 5.9 trillion miles

• 5.9 million miles

Why do astronomers prefer using light years over miles?

• Light years are easier to calculate

• Space distances are vast, making light years more practical

• Miles are not accurate for space measurements

• Light years are a newer unit of measurement

What is the distance to Proxima Centauri in light years?

• 3.2 light years

• 4.2 light years

• 2.4 light years

• 5.2 light years