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
Food as Energy
Themes: Animals, Human Body, and Renewable and Clean Energy
Topics: Biophysics, Energy, and sustainability
Grades: 11-12 and 8-10
Radiation dose
I heard milk is radioactive. Should I worry?
Themes: Energy and Environment, Human Body, Non-renewable and non-clean energy, and Renewable and Clean Energy
Topics: Energy and Nuclear Physics
Grades: 11-12
Energy Cost of Transport
How much energy does it take to move a person or a tonne of freight from A to B?
Themes: Animals, Energy and Environment, Human Body, and Transportation
Topics: Electricity, Energy, and Forces
Grades: 11-12
Heat Balance in the Human Body
How much energy does our body use? How do we keep cool when it is really hot out? Can we justify eating more when studying?
Themes: Biology & Medicine, Energy use at Home, and Human Body
Topics: Biophysics, Efficiency, and Energy
Grades: 11-12
PRIVATE: Vision and Diffraction
Why can eagles see more clearly farther away than we can?
Themes: Animals, Biology & Medicine, and Optics and Radiation
Topics: Biophysics and Optics
Grades: 11-12
PRIVATE: Cheetah Chase
How far away can a cheetah be from a gazelle and still be guaranteed to catch it?
Themes: Animals and Biology & Medicine
Topics: Biophysics and Mechanics
Grades: 11-12