22
Lesson 22 of 84 · Waves
ExperimentTesting and Improving Prototypes
What You'll Learn
The scientific method is a systematic approach to investigating questions. It involves making observations, forming hypotheses, conducting experiments, analyzing data, and drawing conclusions.
Key Words
- refraction
- hypothesis
- variable
Materials Needed
- pennies
- plastic wrap
- cardboard
- tape
Safety First
- Adult supervision recommended.
- Do not taste any materials.
- Wear safety goggles when mixing liquids.
Steps
Step 1 — Read
Read and learn: The scientific method is a systematic approach to investigating questions. It involves making observations, forming hypotheses, conducting experiments, analyzing data, and drawing conclusions.
Step 2 — Do
Measure and record your data in a table.
Step 3 — Observe
Observe what happens and describe it in detail.
Step 4 — Record
Record your observations in your science journal.
Check Your Understanding
Question 1
1 of 3What is a hypothesis?