Lesson 64 of 84 · Human Impacts on Earth
Lesson⭐ 30 XP🌿 Wild JungleBiodiversity and Ecosystems (Part 3)
Human Impacts on Earth.
🎯 Your mission
Understand the idea. Then look for it everywhere.
⚡ The twist
Living things break the rules of non-living things — find the rule they break.
Mind = Blown
🦠 You have more bacterial cells in your body than human cells.
Make a hypothesis first
Predict: what will happen to the plant if you change the water?
What You'll Learn
Biodiversity—the variety of life in an ecosystem—makes ecosystems more resilient. Loss of biodiversity from human activities threatens ecosystem stability worldwide.
Key Words
- amplitude
- reflection
- refraction
Steps
Study the diagram and label the parts you recognize.
Build a simple seismograph using a pen, cup, string, and paper. Shake the table and record the marks. Can you detect bigger vs. smaller shakes?
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 refraction?
Where you see this in real life
Your own body is doing this thousands of times every second.
Stretch Challenge
Try this in real life this week.
Find one thing about your body that's different from a friend's. Wonder why.
For the dinner table
“Tell me something you noticed about your own body today.”
Next Smart Experiment
We'll pick an experiment that matches exactly how you're thinking right now.
Share this experiment
Send it to a parent who's looking for a 10-minute kitchen science win.
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