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Lesson 1 of 84 · Earth Systems

Experiment30 XP🌋 Rock Realm

What Is Weather?

🧪Lab Brief #1

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

Weather is what is happening in the sky right now: sunny, rainy, snowy, or windy.

Key Words

Tap a word to see its definition.

Materials Needed

  • thermometer
  • rain gauge
  • cotton balls

Safety First

  • Do not mix unknown chemicals together.
  • Tie back long hair before starting the experiment.
  • Protect your work surface with newspaper or plastic.

Steps

Step 1Read

Read about Earth Systems with a partner or grown-up.

Step 2Do

Keep a weather journal for 5 days. Each day draw the sky and write the temperature.

Step 3Observe

Watch carefully. What happens?

Step 4Record

Draw and write about what you learned.

Check Your Understanding

Question 1

1 of 3

What is the water cycle?

🌍

Where you see this in real life

Today's weather, tomorrow's beach, next century's coastline — all this.

🏆

Stretch Challenge

Try this in real life this week.

Look at the sky for 5 minutes and try to predict tomorrow's weather.

👨‍👩‍👧

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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What Is Weather? — Earth Systems | 2nd Grade Science | LittleActivity