Blood Pressure
Why do you feel dizzy if you stand up too quickly?
Themes: Biology & Medicine and Human Body
Topics: Biophysics, Fluids, and Pressure
Grades: 8-10
Bats and the Doppler Shift
What compensation for Doppler shifts do bats perform to keep their echoes within their hearing range?
Themes: Animals, Biology & Medicine, and Waves
Topics: Biophysics and Sound
Grades: 11-12 and 8-10
Nerve Impulses
Why are eye-foot and eye-hand reaction times different?
Themes: Biology & Medicine and Human Body
Topics: Biophysics
Grades: 11-12 and 8-10
True, False, or Not Sure? Philosophy of Science in the 21st century
Whatever happened to objective reality? Why is anthropogenic climate change so hard to “prove”?
Topics: Climate, Energy, and Science Literacy
Grades: 11-12 and 8-10
Dimensional Analysis
Unsure if your result makes sense?
Themes: Skills and Techniques
Topics: Mathematics and Science Literacy
Grades: 8-10
Scientific Notation
“The suspect is a male, age 1.73 × 109 s, height 1.83 m, weight 7.5 × 101 kg…”
Themes: Skills and Techniques
Topics: Mathematics and Tools
Grades: 8-10
Order of Magnitude Calculations
How can we make reasonable approximations without tedious calculations?
Themes: Skills and Techniques
Topics: Mathematics, Science Literacy, and Tools
Grades: 8-10
Significant Figures
This tyrannosaurus is 70,000,003 years old. How many significant figures should I quote?
Themes: Skills and Techniques
Topics: Mathematics and Tools
Grades: 11-12 and 8-10
Thermal Radiation
All bodies emit radiation. So why don’t we all shine in the dark?
Themes: Climate, Energy and Environment, and Energy use at Home
Topics: Climate and Energy
Grades: 11-12 and 8-10
Energy Replacement
Themes: Electricity Generation, Energy and Environment, Energy use at Home, Renewable and Clean Energy, and Transportation
Topics: Conservation, Electricity, Energy, and Forces
Grades: 11-12 and 8-10