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.

What is electricity? Energy produced by moving electrons –Electrons = negatively charged particles. Electron

How is electricity used today? Light Heat Movement/power Communication Sound

How does electricity change? Changes to magnetic force, thermal, light, sound

This lamp changes electrical energy to: A. Thermal B. Light C. Magnetic D. Thermal and Light

What do toasters transfer electric energy into? A. Magnetic B. Thermal C. Light D. Solar

What types of energy is electricity transferring to in the television? a.Light b.Sound and Thermal c.Light, Sound, and Temperature d.Light, Sound, and Thermal

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

Forms of Electricity Cont. Current Electricity –Steady flow of electrons –Kinetic energy –Excellent source of energy –Examples: Hairdryer Lamps

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?