53
Lesson 53 of 84 · Space
ExperimentNebulae: Star Nurseries (Part 3)
What You'll Learn
Gravity keeps planets in orbit around the sun and moons in orbit around planets. The strength of gravity depends on mass and distance between objects.
Key Words
- gravity
- light-year
- constellation
Materials Needed
- ruler
- compass
- black paper
Safety First
- Dispose of materials properly after the experiment.
- Handle glass items carefully to avoid breakage.
Steps
Step 1 — Read
Read the introduction and identify the main idea of this lesson.
Step 2 — Do
Research and create a poster about one constellation. Include its stars, mythology, and when it's visible in your area.
Step 3 — Observe
Compare the before and after states.
Step 4 — Record
Write your conclusion: did the results match your hypothesis? What would you change next time?
Check Your Understanding
Question 1
1 of 3What is a comet?