Curated OER
The Speed of Galaxy Q2125-431
In this speed of a galaxy instructional activity, students use a given equation for the speed of an object and they use the spectral lines for Hydrogen Alpha and Beta from the Seyfert galaxy to answer 6 questions. They determine the...
Curated OER
Sonar and Marine Mammals
For this marine science worksheet, students study online reports and data on sonar effects on marine animals. They complete 7 short answer questions that follow.
University of Maryland
University of Maryland: Thinking Problems With Sound
A series of thought-provoking multiple-choice questions from the University of Maryland on the topic of sound and acoustics. One question pertains to the acoustics of a furnished room with two speakers; demands a basic understanding of...