45
Lesson 45 of 84 · Energy
ExperimentEnergy Transformations (Part 2)
What You'll Learn
Renewable energy sources like solar, wind, and hydroelectric power can be replenished naturally. Nonrenewable sources like fossil fuels take millions of years to form.
Key Words
- energy
- kinetic
Materials Needed
- ramps
- string
- weights
- tape
- ruler
- cardboard
Safety First
- Use materials only as directed in the experiment.
- Keep small objects away from young children.
- Work in a well-ventilated area when using vinegar or other strong-smelling substances.
Steps
Step 1 — Read
Review the background information on Energy before starting.
Step 2 — Do
Build a simple motor using a battery, magnet, wire, and paper clip supports. Observe how electromagnetic forces create rotation.
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 momentum?