Electricity

1
Electricity

• Learning Objectives
• PS 3-I can describe or explain that electrical
  current in a circuit (closed path) can produce
  thermal energy, light, sound, and/or magnetic
  forces.
• PS 4-I can trace how electrical current travels
  by creating a simple electric circuit that will
  light a bulb.

2
What is electricity?

• Energy produced by moving electrons
• Electrons negatively charged particles.

3
How is electricity used today?

• Light
• Heat
• Movement/power
• Communication
• Sound

4
How does electricity change?

• Changes to magnetic force, thermal, light, sound

5
This lamp changes electrical energy to

• A. Thermal
• B. Light
• C. Magnetic
• D. Thermal and Light

6
What do toasters transfer electric energy into?

• A. Magnetic
• B. Thermal
• C. Light
• D. Solar

7
What types of energy is electricity transferring
to in the television?

1. Light
2. Sound and Thermal
3. Light, Sound, and Temperature
4. Light, Sound, and Thermal

8
Forms of Electricity

• Static Electricity
• Buildup of charges on an object
• Potential to kinetic energy
• Not a reliable energy source
• Examples
• Lightning
• Hair standing straight up after taking off a hat

9
Forms of Electricity Cont.

• Current Electricity
• Steady flow of electrons
• Kinetic energy
• Excellent source of energy
• Examples
• Hairdryer
• Lamps

10
Conductors and Insulators

• Conductor
• Material that electricity moves through quickly
• Insulator
• Material that electricity moves through slowly
• Wires are usually covered with plastic, why is
  this so?