Lesson 35 of 84 · Light Optics
Lesson⭐ 30 XP⚡ Spark LabNatural Selection and Evolution
Light Optics.
🎯 Your mission
Master the concept. Use it tomorrow.
⚡ The twist
The opposite of what you expect is often what happens.
Mind = Blown
🔥 A bolt of lightning is 5 times hotter than the surface of the sun.
Make a hypothesis first
Predict: what happens if you double the force?
What You'll Learn
Natural selection is the process in which organisms with helpful traits survive and reproduce more successfully than those without them. Over many generations this can lead to evolution, such as when moths with darker wings became common in soot-covered forests.
Key Words
Tap a word to see its definition.
Steps
Study the diagram and label the parts you recognize.
Dissect a flower (lily or tulip works well). Identify and label the sepals, petals, stamen, pistil, and ovary. Tape each part to paper.
Note any unexpected results and think about why they happened.
Share your findings with the class or a partner and discuss what you learned.
Check Your Understanding
Question 1
1 of 3What do hibernating animals do?
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.
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