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Lesson 73 of 84 · Earth Systems

Experiment30 XP🌋 Rock Realm

Fossils in Rocks (Part 3)

🧪Lab Brief #73

Earth Systems.

🎯 Your mission

Predict it first. Then prove yourself right (or wrong).

⚡ The twist

Today's mountain was yesterday's ocean floor.

🤯

Mind = Blown

🌋 There are 1,500 active volcanoes on Earth right now.

🔮

Make a hypothesis first

Guess: where will the water go first?

What You'll Learn

Fossils are imprints or remains of living things from long ago, found in rocks.

Key Words

Tap a word to see its definition.

Materials Needed

  • magnifying glass
  • newspaper
  • spray bottle
  • cups
  • thermometer

Safety First

  • Keep small objects away from young children.
  • Work in a well-ventilated area when using vinegar or other strong-smelling substances.

Steps

Step 1Read

Read the introduction. What is this lesson about?

Step 2Do

Make a mini water cycle: put warm water in a bowl, cover it with plastic wrap, and place an ice cube on top. Watch what happens.

Step 3Observe

Look for something that changed. What is it?

Step 4Record

Circle the correct answer on your worksheet.

Check Your Understanding

Question 1

1 of 3

Where can you find fossils?

🌍

Where you see this in real life

This is shaping the ground you walk on, slowly, every single day.

🏆

Stretch Challenge

Try this in real life this week.

Find a rock outside and try to guess how old it is.

👨‍👩‍👧

For the dinner table

What's the slowest change you can think of?

🎯

Next Smart Experiment

We'll pick an experiment that matches exactly how you're thinking right now.

🌱Share card

Share this experiment

Send it to a parent who's looking for a 10-minute kitchen science win.

🖨️

Checkout complete lesson on Earth Systems for 2nd Grade

Get the full Earth Systems track as a printable PDF — all lessons, worksheets, and answer keys.

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Fossils in Rocks (Part 3) — Earth Systems | 2nd Grade Science | LittleActivity