46
Lesson 46 of 84 · Light
ExperimentWhat Scientists Do (Part 3)
What You'll Learn
A prediction is a guess about what will happen. Good scientists make predictions before testing.
Key Words
- measure
- compare
- record
Materials Needed
- aluminum foil
- ruler
- markers
- popsicle sticks
- pennies
- plastic wrap
Safety First
- Tie back long hair before starting the experiment.
- Protect your work surface with newspaper or plastic.
- Adult supervision recommended.
Steps
Step 1 — Read
Read and learn: A prediction is a guess about what will happen. Good scientists make predictions before testing.
Step 2 — Do
Measure using your ruler or measuring cup.
Step 3 — Observe
Watch carefully. What happens?
Step 4 — Record
Draw and write about what you learned.
Check Your Understanding
Question 1
1 of 3What does 'observe' mean?