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Lesson 76 of 84 · Sink and Float
ExperimentMud, Sand, and Clay (Part 3)
What You'll Learn
Sand is made of tiny pieces of rock. It feels rough and gritty.
Key Words
- soft
- sticky
Materials Needed
- food coloring
- plastic bottles
- balloons
- measuring cups
- paper towels
- thermometer
Safety First
- Work in a well-ventilated area when using vinegar or other strong-smelling substances.
- Dispose of materials properly after the experiment.
- Handle glass items carefully to avoid breakage.
Steps
Step 1 — Read
Listen to the story about Sink and Float.
Step 2 — Do
Drop a rock and a feather into water. Which one sinks? Which one floats?
Step 3 — Observe
Look closely! What do you see?
Step 4 — Record
Draw a picture of what you learned today.
Check Your Understanding
Question 1
1 of 3Is a ball hard or soft?