Distance

High school (ages 12+)
Mathematics & Numbers

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/distance

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the standard units?Includes the meter (metric system) and the foot (imperial system)
2. What is the astronomical measurement?Utilizes parallax, standard candles (like Cepheid variables), and redshift
3. What is distance and why do we need it?Distance is how far apart two things are. We use it to measure roads, stars, and even how far a toy is from us.
4. How do we measure distance on Earth?We use rulers for small things, odometers for cars, and GPS satellites that send radio signals to tell us how far we are from places.

Metric Space: A set where a distance function (metric) is defined between all pairs of elements.
Euclidean Distance: The straight-line distance between two points in Euclidean space.
Light-Year: The distance that light travels in a vacuum in one Julian year.