April 8, 2005 Created by Kristy Lynn Price

STATIC STATIC ELECTRICITYELECTRICITYTLW explore the effects of static TLW explore the effects of static

electricity.electricity.

TLW describe the characteristics of TLW describe the characteristics of static electricity and how it is static electricity and how it is formed.formed.

TLW compare materials along with TLW compare materials along with electrical discharges, including electrical discharges, including lightning, will and will not lightning, will and will not transfer.transfer.

April 8, 2005 Created by Kristy Lynn Price

What is Electrical Charge?What is Electrical Charge?

How can you produce charges on How can you produce charges on objects, such as balloons?objects, such as balloons?

Matter is made of tiny particles that Matter is made of tiny particles that can be negative or positivecan be negative or positive

Opposite charges attractOpposite charges attract Negative charges repelNegative charges repel Balloon Demonstration (F70)Balloon Demonstration (F70) Static ElectricityStatic Electricity is the build-up of is the build-up of

charge on a materialcharge on a material

+ -

+ -

+ -

April 8, 2005 Created by Kristy Lynn Price

What is an Electrical What is an Electrical Discharge?Discharge?

Walking across carpet…Walking across carpet… When you touch something, the When you touch something, the

charge moves from your body to charge moves from your body to another object. This is called another object. This is called dischargedischarge..

Electricity does not discharge into all Electricity does not discharge into all materialsmaterials

ConductorsConductors: : Allows electricity to flow easily through materials

InsulatorsInsulators: : Electricity does not flow

April 8, 2005 Created by Kristy Lynn Price

How Does Lightning Form?How Does Lightning Form?

Static electricity forms lightning boltsStatic electricity forms lightning bolts Lightning is a discharge of static Lightning is a discharge of static

electricity form a huge cloud called a electricity form a huge cloud called a thundercloudthundercloud

How is lightning How is lightning similarsimilar to the shock to the shock you receive by touching a doorknob?you receive by touching a doorknob?

A single lightning bolt has enough A single lightning bolt has enough power to light 100 million light bulbs.power to light 100 million light bulbs.

Look at the diagram on page F73Look at the diagram on page F73

April 8, 2005 Created by Kristy Lynn Price

ReviewReview

What are the two types of electrical What are the two types of electrical charges in atoms?charges in atoms?

What types of materials can What types of materials can electricity easily discharge into?electricity easily discharge into?

What is lightning?What is lightning?