Grade 8 Electricity

How do television sets and computers cause allergies to be worse?

• The static charge on the screens attracts particles of food that a person may be allergic to.

• The sight of allergens on the television or internet may trigger an allergic reaction

• The static charge that builds up on the screens attracts dust and accompanying dust mites and their feces, which are common allergens.

• Electric forces within the devices trigger an allergic reaction. Allergies respond to charges.

The opposition to the flow of electric charge is called

Atoms that have gained or lost charge are called

• ions

• protons

• electrons

• neutrons

Objects with like charges will __________.

The closer together charged objects are, the ________________ the electric force is.

Friction transfers electrons when:

• Friction can't transfer charge.

• Two objects come close to one another and one produces a localized charge in the other

• two objects remain separated and the charge has to jump from one to the other.

• two objects are rubbed together, transferring charge from one to the other

The buildup of electric charge on an object is termed

• television static

• static cling

• static electricity

• static waves

Electrical conductors allow

• charges to move freely

• resistance to the movement of charges

• charges to remain in place on an object.

• the trains to run on time.

These materials are used to control the flow of charge because they conduct electricity better than electrical insulators but not as well as electrical conductors.

These materials include plastic and rubber and they do not allow charge to move freely

• electrical conductors

• electrical insulators

• banks

• semiconductors