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Lesson 21 of 84 · Human Impacts on Earth
ExperimentDesigning Solutions to Problems
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
- iteration
- wavelength
Materials Needed
- string
- cups
- aluminum foil
Safety First
- Do not look directly at the sun or bright lights.
- Clean up spills immediately to prevent slipping.
Steps
Step 1 — Read
Read about Human Impacts on Earth and write down three key facts.
Step 2 — Do
Create a solar oven from a pizza box lined with foil. Measure the temperature inside on a sunny day. Try melting chocolate or cheese.
Step 3 — Observe
Note any unexpected results and think about why they happened.
Step 4 — Record
Share your findings with the class or a partner and discuss what you learned.
Check Your Understanding
Question 1
1 of 3What is a scientific model?