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Lesson 3 of 84 · Human Impacts on Earth
ExperimentForming a Hypothesis
What You'll Learn
A hypothesis is a testable prediction about what will happen in an experiment. A good hypothesis is specific and based on prior knowledge or observations.
Key Words
- variable
- control
Materials Needed
- popsicle sticks
- pennies
- plastic wrap
Safety First
- Adult supervision recommended.
- Do not taste any materials.
- Wear safety goggles when mixing liquids.
Steps
Step 1 — Read
Read the introduction and identify the main idea of this lesson.
Step 2 — Do
Design a device that can protect an egg from a 2-meter drop. You may use paper, tape, straws, and cotton. Test it and improve your design.
Step 3 — Observe
Use your senses (except taste) to describe what you notice.
Step 4 — Record
Write a summary of your findings in 3-5 sentences.
Check Your Understanding
Question 1
1 of 3What is the dependent variable?