Static Electricity

Front

Ms Pippin rubbed two balloons with a piece of wool. What will happen when the balloons are brought near each other?

Back

The balloons will repel each other.

Answer explanation

When Ms. Pippin rubs the balloons with wool, they become negatively charged. Like charges repel each other, so when brought near, the balloons will repel each other.

Front

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

Back

induction

Answer explanation

Bending water with a charged balloon demonstrates induction, where the balloon's charge influences the distribution of charges in the water without direct contact, causing the water to bend towards the balloon.

Front

What is the difference between attraction and repulsion?

Back

To attract is to pull something closer and repel is to push something away.

Answer explanation

The statement correctly defines attraction as pulling closer and repulsion as pushing away. Therefore, the answer is True.

Front

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

Back

A negative charge.

Answer explanation

A substance with more electrons than protons has an excess of negative charge, resulting in a negative charge overall. Therefore, the correct answer is a negative charge.

Front

Electrical charge built up on the surface of an object is called _________________.

Back

static electricity

Answer explanation

Electrical charge that accumulates on the surface of an object is known as static electricity. This differs from current electricity, which involves the flow of charge, and is distinct from phenomena like lightning and electrons.

Front

The positively charged particle in an atom, never leaves the nucleus, determines the element

Back

proton

Answer explanation

The proton is a positively charged particle found in the nucleus of an atom. It determines the element's identity, as the number of protons defines the atomic number, distinguishing one element from another.

Front

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

Back

friction

Answer explanation

Rubbing a balloon with a wooly fabric transfers electrons due to friction, causing the balloon to become charged. This process is known as charging by friction, distinguishing it from conduction and induction.

Front

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

Back

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

Answer explanation

The correct choice highlights that current electricity involves a continuous flow of electrons, while static electricity is characterized by a single transfer of electrons, making it distinct in behavior.

Front

What types of charges attract? Options: Positive and Positive, Positive and Neutral, Negative and Neutral, Positive and Negative

Back

Positive and Negative

Answer explanation

Positive and negative charges attract each other due to opposite electrical forces. Positive and positive or negative and negative charges repel each other, while neutral charges can be attracted to charged objects.

Front

What happens when you touch a metal doorknob after rubbing your shoes on the carpet?

Back

Millions of electrons go from your finger into the doorknob

Answer explanation

When you rub your shoes on the carpet, you build up static electricity. Touching the metal doorknob allows millions of electrons to flow from your finger into the doorknob, neutralizing the charge.