Seam-shifted wake

High school (ages 12+)
Sports & Games

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/seam-shifted-wake

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 origin?Coined in 2019 by Andrew Smith at Utah State University
2. What is the core mechanism?Premature and asymmetrical boundary layer separation induced by seams
3. What is seam-shifted wake in baseball?Seam‑shifted wake is a special airflow effect that happens when a baseball’s raised seams change how air moves around the ball, making it fly differently than expected.
4. How does the seam on a baseball affect its flight?The seams can make the air separate early on one side of the ball, creating a pressure difference that pushes the ball in a new direction.

Boundary Layer Separation: The point where airflow detaches from the surface of a moving object.
Turbulent Boundary Layer: A chaotic, mixed layer of fluid flow close to a surface.
Magnus Effect: The aerodynamic force acting on a spinning cylinder or sphere moving through a fluid.
Pitch Deviation: The difference between a pitch's expected movement (based on spin) and its actual observed movement.