Summary
Mark compares powerful lasers to lightning to explore how each carries and delivers energy. It ties together light and electrical energy in a big, exciting test.
Viewer safety
Very bright lasers and simulated lightning/electricity; loud and intense. A 'do not attempt' demo. Made for a general YouTube audience — an occasional mild or bleeped word can slip in, so preview if your classroom bar is strict.
Our rating is a quick teacher-to-teacher guide — preview before showing.
Teaching resources
Discussion questions
Talk about it
Lasers are focused light energy; lightning is a burst of electrical energy. Both can transfer enough energy to heat or change what they hit.
- How are light energy and electrical energy alike and different?
- What evidence shows each one is transferring energy?
- Why is real lightning so dangerous to be near?
Quick work-a-long
Vocabulary: light energy, electrical energy, transfer, power.
Try it: Rub a balloon on your hair to make a tiny spark or crackle. Explain that you just moved electrical energy.