Exploring Light Year 3

What is a light year?

• A light year is a measurement of weight in the metric system.

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

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

• A light year is a unit of time measuring the brightness of a star.

How many kilometers are in a light year?

• Approximately 9.461e+12 kilometers

• Approximately 1.234e+10 kilometers

• Approximately 5.678e+11 kilometers

• Approximately 3.456e+13 kilometers

How long does it take for light to travel one light year?

• Approximately 5.88 trillion miles per year

• Around 100 billion miles per year

• Approximately 10 trillion miles per year

• Exactly 1 light year

What is the speed of light in a vacuum?

• 186,282,394 meters per second

• 500,000,000 meters per second

• 100,000,000 meters per second

• 299,792,458 meters per second

Can we see objects that are light years away?

• Yes

• No

• Sometimes

• Only during the day

How is a light year different from a regular year?

• A light year is used to measure time in space travel.

• A light year is shorter than a regular year.

• A light year measures distance, while a regular year measures time.

• A light year measures time, while a regular year measures distance.

Why do astronomers use light years to measure distance in space?

• Light years are easier to calculate than other units

• Light years are the same as regular years

• Astronomers prefer using kilometers

• Light years provide a convenient and practical way to express vast distances in space.

What is the closest star to Earth in light years?

• Alpha Centauri

• Betelgeuse

• Proxima Centauri

• Sun

How many light years away is the nearest galaxy to the Milky Way?

• 25,000 light years

• 100,000 light years

• 10,000 light years

• 50,000 light years

What is the concept of a light year used for in science fiction?

• To calculate the weight of stars

• To measure vast distances in space

• To measure time in space travel

• To determine the age of planets