Static Electricity S4

Opposite charges

• attract

• repel

• become neutral

• do nothing

If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?

• A positive charge.
• A negative charge.
• A neutral charge
• No charge at all

What types of charges attract?

• Positive and Positive
• Positive and Neutral
• Negative and Neutral
• Positive and Negative

What is the major difference between static electricity and current electricity?

• Current electricity involves a continuous flow of elecrons; static electricity is a sudden transfer of protons

• Current electricity can be deadly; static electricity is almost always safe

• In current electricity, there's a single transfer of electrons; in static electricity, there's a steady flow of electrons

• Current electricity involves a flow of electrons; static electricity involves a single transfer of electrons

During a lab a balloon was rubbed with a wooly fabric. This is an example of which type of charging?

• conduction

• friction

• induction

Bending water with a charged balloon is an example of what type of charging (charging an object without touching)

• friction

• induction

• conduction

the charging of an object by the contact of a charged object to a neutral object (like touching a door knob)

• induction

• conduction

• friction

If you rub a glass rod with a piece of silk, the rod becomes positively charged. This means that

• friction destroyed electrons in the rod.
• the silk has become negatively charged.
• protons have moved to the rod.
• glass attracts more protons.

If you bring a charged object near an electrically neutral surface without allowing the object to touch the surface, the charges in the surface are rearranged by

• friction.
• convection.
• induction.
• conduction.

Charging by ____ occurs when electrons are transferred from one object to another by direct contact.

• reduction
• induction
• conduction
• friction