19
Lesson 19 of 84 · Energy
ExperimentElectromagnets
What You'll Learn
A force is a push or pull that can change an object's motion, shape, or direction. Forces are measured in Newtons and can act through contact or at a distance.
Key Words
- work
- power
- simple machine
Materials Needed
- stopwatch
- pencils
- toy cars
- ramps
- string
Safety First
- Be careful with scissors — ask an adult for help if needed.
Steps
Step 1 — Read
Review the background information on Energy before starting.
Step 2 — Do
Build an electromagnet by wrapping insulated wire around a nail and connecting it to a battery. Test how many paper clips it can pick up. Try adding more wire coils.
Step 3 — Observe
Draw a detailed diagram of what you observe.
Step 4 — Record
Write a conclusion: what did your results show? Did they match your prediction?
Check Your Understanding
Question 1
1 of 3What is a fulcrum?