Sled

High school (ages 12+)
Transportation

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/sled

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 primary function (historical)?Essential for transportation, resource acquisition, and inter-group connectivity in snow-covered regions
2. What is the key physical phenomena?Meltwater lubrication due to friction and pressure, gravitational acceleration, aerodynamic drag
3. What is a sled and why do people use it in cold places?A sled is a flat or narrow board that slides over snow. It is used for fun and to carry people, animals, and goods in cold, snowy areas.
4. How does a sled move so fast on snow?The sled's smooth runners create a thin layer of meltwater that reduces friction. The weight pushes the runners into the snow, making it slide easily.

Coefficient of Friction: A measure of the force resisting motion between two surfaces in contact.
Aerodynamic Drag: The force that opposes an object's motion through the air.
Gravitational Potential Energy: The energy an object possesses due to its position in a gravitational field.