Lesson 16 of 84 · Spacetime
Lesson⭐ 30 XP🚀 StarbasePlant Structures and Their Jobs
Spacetime.
🎯 Your mission
Understand the idea. Then look for it everywhere.
⚡ The twist
Up there, the rules of down here stop working.
Mind = Blown
🪐 A day on Venus is longer than a year on Venus.
Make a hypothesis first
Predict: what would happen on the moon vs. on Earth?
What You'll Learn
Plants have specialized structures: roots anchor the plant and absorb water, stems transport materials, leaves capture sunlight, and flowers produce seeds for reproduction.
Key Words
Tap a word to see its definition.
Steps
Read about Spacetime and write down three key facts.
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?
Watch carefully for any changes and note the time.
Create a data table to organize your measurements.
Check Your Understanding
Question 1
1 of 3What part of a plant absorbs water from the soil?
Where you see this in real life
Every sunrise and every shadow is this idea in action.
Stretch Challenge
Try this in real life this week.
Look at the moon tonight. Notice its shape. Look again in 3 days.
For the dinner table
“If you could visit any planet, which would you pick and why?”
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 Spacetime for 9th Grade
Get the full Spacetime track as a printable PDF — all lessons, worksheets, and answer keys.