Lesson 29 of 84 · Earth Systems
Experiment⭐ 30 XP🌋 Rock RealmStalactites in Caves
Earth Systems.
🎯 Your mission
Set it up. Test it. Be amazed.
⚡ The twist
The slowest changes are the biggest ones.
Mind = Blown
🪨 Every grain of sand on every beach used to be a mountain.
Make a hypothesis first
Predict: which will erode faster?
What You'll Learn
Stalactites hang from cave ceilings. They form from water dripping and leaving minerals behind.
Key Words
Tap a word to see its definition.
Materials Needed
- spray bottle
- cups
- thermometer
- rain gauge
- cotton balls
- food coloring
Safety First
- Wear safety goggles when mixing liquids.
- Wash hands after handling materials.
- Be careful with scissors — ask an adult for help if needed.
Steps
Look at the picture and read the labels.
Pour water on a pile of sand and a pile of rocks. Watch how the water flows differently.
Draw a picture of what you observe.
Share your results with a partner.
Check Your Understanding
Question 1
1 of 3What is a volcano?
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?”
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