Light Energy and Wavelength
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Objective
I can explain how the energy and wavelength of light are related and how these properties encode information about distant objects.
Part 1 of 4
Warm-up video
CrashCourse · 10:34Vetted channel
We don't generate video — this one is by CrashCourse on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 concepts
- 1
Light is a form of energy that travels in waves, and we call it electromagnetic radiation.
- 2
The energy of light is related to its wavelength, where shorter wavelengths have more energy and are perceived as "bluer" colors.
- 3
By analyzing the light from distant objects using spectroscopy, we can determine their temperature, density, motion, and chemical composition.
Part 3 of 4
Practice
12 questions
What is the relationship between the wavelength of light and its energy?
List the following types of electromagnetic radiation in order from lowest energy to highest energy: infrared, ultraviolet, visible light, radio waves, X-rays.
Part 4 of 4
Exit ticket
Quick comprehension check
“Explain the relationship between the energy and wavelength of light. Then, describe how analyzing the light from a distant star can reveal its chemical composition.”
Sample answer included in the free materials
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Teacher guide, student handout, and slides — free, in Google Docs format
Teacher Guide
Complete lesson plan with answer keys and alternate activities
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