Lesson 40 of 84 · Stoichiometry
Simulation⭐ 30 XPThe Nitrogen Cycle
Stoichiometry.
🎯 Your mission
Play with the model. Break it. Understand it.
⚡ The twist
Nature loves to surprise the careful watcher.
Mind = Blown
🔬 The more you look, the more nature shows you.
Make a hypothesis first
Before you start: write down what you think will happen, and why.
What You'll Learn
Nitrogen is needed to build proteins, and the nitrogen cycle moves it between the air, soil, and living things. Special bacteria convert nitrogen gas from the air into forms that plants can absorb through their roots.
Key Words
Tap a word to see its definition.
Steps
Study the diagram and label the parts you recognize.
Model natural selection: scatter colored paper scraps on grass. Time how long it takes a partner to pick up each color. Which color survived longest? Why?
Draw a detailed diagram of what you observe.
Write a conclusion: what did your results show? Did they match your prediction?
Check Your Understanding
Question 1
1 of 3What is a habitat?
Where you see this in real life
This shows up in your everyday life more than you'd think.
Stretch Challenge
Try this in real life this week.
Try one experiment in real life this week — even a tiny one.
For the dinner table
“What's the most surprising thing you learned today?”
Next Smart Experiment
We'll pick an experiment that matches exactly how you're thinking right now.
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Send it to a parent who's looking for a 10-minute kitchen science win.
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