Lesson 72 of 84 · Human Impacts on Earth
Experiment⭐ 30 XP🌿 Wild JungleHow Light Travels (Part 4)
Human Impacts on Earth.
🎯 Your mission
Run the experiment. Find out what really happens.
⚡ The twist
Every species solves the same problem differently.
Mind = Blown
🌳 Trees can talk to each other through underground fungus networks.
Make a hypothesis first
Before you watch: what do you think it'll do?
What You'll Learn
Light travels in straight lines and can be reflected, refracted, or absorbed. Mirrors reflect light, lenses refract (bend) light, and dark surfaces absorb light.
Key Words
- observation
- experiment
- conclusion
Materials Needed
- popsicle sticks
- pennies
- plastic wrap
Safety First
- Do not taste any materials.
- Wear safety goggles when mixing liquids.
Steps
Read about Human Impacts on Earth and write down three key facts.
Design an experiment to test a hypothesis. Identify your independent variable, dependent variable, and controls. Run the experiment and present results.
Compare the before and after states.
Write your conclusion: did the results match your hypothesis? What would you change next time?
Check Your Understanding
Question 1
1 of 3What is sound?
Where you see this in real life
This is why plants grow toward windows and why scabs form.
Stretch Challenge
Try this in real life this week.
Watch a plant or pet for 5 minutes today and write down what you noticed.
For the dinner table
“Tell me something you noticed about your own body today.”
Next Smart Experiment
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Send it to a parent who's looking for a 10-minute kitchen science win.
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