Lesson 2 of 5 · Heredity
Lesson⭐ 30 XPExtinction and Mass Extinctions
Extinction and Mass Extinctions.
🎯 Your mission
Learn the rule. Then catch nature using 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
Extinction occurs when the last member of a species dies. Mass extinctions have occurred several times in Earth's history, the most famous killing the dinosaurs 66 million years ago.
Key Words
Tap a word to see its definition.
Steps
Look at the vocabulary words and write a definition for each in your own words.
Observe what happens and describe it in detail.
Record your observations in your science journal with measurements and descriptions.
Check Your Understanding
Question 1
1 of 3What is a dominant trait?
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.
Share this experiment
Send it to a parent who's looking for a 10-minute kitchen science win.
Ready?
Extinction and Mass Extinctions
Learn the rule. Then catch nature using it.
Full screen — no distractions
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