8-10

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

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

Why are eye-foot and eye-hand reaction times different?

Themes: Biology & Medicine and Human Body

Topics: Biophysics

Grades: 11-12 and 8-10

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

Unsure if your result makes sense?

Themes: Skills and Techniques

Topics: Mathematics and Science Literacy

Grades: 8-10

“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

How can we make reasonable approximations without tedious calculations?

Themes: Skills and Techniques

Topics: Mathematics, Science Literacy, and Tools

Grades: 8-10

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

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

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