Star Brightness and Size
Grade 4th Grade · Science · 35 min· Ngss 4-ess3-1
What's Included
Learning Objective
I can compare the brightness and size of different stars.
Warm-Up Video
Crash Course Kids · 5:10
Glow On: Crash Course Kids #20.2
Guided Notes
3 key concepts
- 1
Stars create energy in their core through a process called nuclear fusion, where hydrogen molecules smash together to create helium.
- 2
Luminosity is a star's true brightness, measuring how much energy it shines from its surface, while apparent brightness is how bright a star appears from Earth.
- 3
A star's apparent brightness depends on its distance from Earth, not just its size or power, because closer stars appear brighter.
Practice Questions
5 questions · Multiple choice & Short answer
Exit Ticket
Quick comprehension check
“Explain how both the size and distance of a star affect how bright it appears to us on Earth. Give an example using the Sun and Betelgeuse.”
Complete Lesson Package
Get all 3 ready-to-use resources:
