Hydrofoil

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/hydrofoil

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 scientific principle?Bernoulli's principle applied to hydrodynamic lift
2. What is the key design element?Submerged airfoil-shaped foils generating upward force
3. How does a hydrofoil lift the boat?The foils shape water flow so that water moves faster over the top, creating lower pressure, while slower under, creating higher pressure, which pushes the boat up.
4. Why do hydrofoils go faster than regular boats?When the hull is lifted, only the foils touch the water, so there is less drag, letting the boat move faster and use less fuel.

Hydrodynamic Lift: The upward force generated by the movement of a foil through water.
Bernoulli's Principle: A physics principle stating that faster-moving fluids exert lower pressure.
Hull: The main structural body of a watercraft.
Drag: The resistive force that opposes motion through a fluid.