Department of Energy Argonne National Laboratory Office of Science NEWTON's Homepage NEWTON's Homepage
NEWTON, Ask A Scientist!
NEWTON Home Page NEWTON Teachers Visit Our Archives Ask A Question How To Ask A Question Question of the Week Our Expert Scientists Volunteer at NEWTON! Frequently Asked Questions Referencing NEWTON About NEWTON About Ask A Scientist Education At Argonne White Water in Waterfall
Name: Vicki T.
Status: student
Grade: 6-8
Location: Australia
Country: N/A
Date: 2/11/2005


Question:
Hi! I would like to know , why does water turn white when it goes down a waterfall?


Replies:
Turbulent water looks "white" because it is scattering light of all visible wavelengths into your eyes. This scattering occurs from a number of sources. Water droplets (you can see this happen if you turn a garden hose on, or even a faucet. Entrapped air (you can see this if your sink has an aerated faucet, or even more dramatically by whipping egg whites. Egg whites are essentially clear but when beaten turn into froth).

Vince Calder



Click here to return to the Physics Archives

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (help@newton.dep.anl.gov), or at Argonne's Educational Programs

NEWTON AND ASK A SCIENTIST
Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012
Weclome To Newton

Argonne National Laboratory