Lesson 73 of 84 · Light Optics
Experiment⭐ 30 XP⚡ Spark LabThe Cell and Its Organelles (Part 2)
Light Optics.
🎯 Your mission
Run the experiment. Find out what really happens.
⚡ The twist
Speed isn't the same as force. Don't mix them up.
Mind = Blown
⚡ Static electricity is the same physics as lightning, just smaller.
Make a hypothesis first
Guess: where does the energy go?
What You'll Learn
Cells are the smallest units of life, and each one contains tiny structures called organelles that carry out specific jobs. The nucleus stores genetic information, the mitochondria release energy, and the cell membrane controls what enters and leaves the cell.
Key Words
Tap a word to see its definition.
Materials Needed
- markers
- tape
- small pots
- cotton balls
Safety First
- Tie back long hair before starting the experiment.
- Protect your work surface with newspaper or plastic.
- Adult supervision recommended.
Steps
Look at the vocabulary words and write a definition for each in your own words.
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?
Look for patterns in your observations.
Make a graph or chart showing your results.
Check Your Understanding
Question 1
1 of 3What do plants need to make food through photosynthesis?
Where you see this in real life
This is why airplanes can fly and why rockets reach space.
Stretch Challenge
Try this in real life this week.
This week, find one thing in your house that turns one kind of energy into another.
For the dinner table
“Show me something at home that uses this kind of energy.”
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.
Checkout complete lesson on Light Optics for 9th Grade
Get the full Light Optics track as a printable PDF — all lessons, worksheets, and answer keys.