Propeller

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/propeller

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 aerodynamic/hydrodynamic principle?Relies on Bernoulli's principle and Newton's third law of motion
2. What is a propeller and how does it move a boat or plane?A propeller has a center hub and blades that spin. The spinning blades push water or air, creating a force that moves the boat or plane forward.
3. Why do the blades of a propeller have a special angle or pitch?The blades are angled so that when they spin, they make the fluid move faster on one side and slower on the other. This difference in speed creates a pressure difference that pushes the propeller forward.

Pitch: The angle of the propeller blade relative to its plane of rotation, determining thrust generation.
Thrust: The force generated by the propeller that propels the vehicle forward.
Bernoulli's Principle: A physics principle stating that an increase in fluid speed occurs simultaneously with a decrease in pressure or a decrease in the fluid's potential energy.