Atoms, Electric Charge, And Other Things.

1.

Protons are...

A.

Negative
B.

Neutral
C.

Positive
D.

Unequal
E.

Are as delicious as your grandmother's cookies

Correct Answer
C. Positive

Explanation
Protons are positively charged particles found in the nucleus of an atom. They have a positive electrical charge and are balanced by an equal number of negatively charged electrons in order to maintain overall neutrality of the atom. Therefore, the correct answer is positive.

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2.

Electrons are...

A.

Negative
B.

Neutral
C.

Positive
D.

Unequal
E.

Weird

Correct Answer
A. Negative

Explanation
Electrons are negatively charged particles that orbit around the nucleus of an atom. They carry a negative charge and are attracted to positively charged particles. This is why electrons are considered negative.

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3.

The law of electric charges states that...

Correct Answer
similar charges repel and opposites attract.
opposites attract, likes repel.

Explanation
The law of electric charges states that similar charges repel each other, meaning that two positive charges or two negative charges will push away from each other. On the other hand, opposites attract, which means that a positive charge will be attracted to a negative charge, and vice versa. This principle can be observed in various electrical phenomena, such as the behavior of magnets or the interaction between protons and electrons in an atom.

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4.

What is an electric force?

Correct Answer
the force of attraction of repulsion on a charged particle that is due to an electric field.
force of attraction and repulsion of charged things because an electric field.

Explanation
An electric force refers to the force of attraction or repulsion that acts on a charged particle. This force is a result of the presence of an electric field. Charged particles experience this force due to the interaction with the electric field created by other charged objects. The force can be either attractive or repulsive, depending on the charges involved.

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5.

What are the two things that decide on how powerful an electric force is?

A.

The amount of charge each object has and the amount of energy the objects have.
B.

The amount of charge on each object and the distance between the objects.
C.

The distance between each object and the energy each object has.
D.

The number of objects and the number of charges.

Correct Answer
B. The amount of charge on each object and the distance between the objects.

Explanation
The electric force between two objects is determined by the amount of charge each object has and the distance between the objects. The amount of charge on each object affects the strength of the electric force, with greater charges resulting in a stronger force. Additionally, the distance between the objects also plays a role, as the force decreases as the distance between the objects increases. Therefore, both the amount of charge and the distance between the objects are important factors in determining the power of the electric force.

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6.

Do atoms have a charge?

A.

Yes
B.

No
C.

Sometimes
D.

Maybe
E.

No idea

Correct Answer
B. No

Explanation
Atoms do not have a charge by default. However, they can gain or lose electrons, resulting in a positive or negative charge. These charged atoms are called ions. In their neutral state, atoms have an equal number of protons and electrons, canceling out any charge. Therefore, the correct answer is "No."

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7.

What is an electric field?

Correct Answer
The space around a charged object in which another charged object experiences an electric force.
A field where electric forces take place.

Explanation
The correct answer explains that an electric field is the space surrounding a charged object where another charged object will experience an electric force. It also states that an electric field is a field where electric forces occur. This means that when a charged object is present in a certain area, it creates an electric field that can exert a force on other charged objects within that space. The answer effectively describes the concept of an electric field and its relationship to the interaction of charged objects.

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8.

Which three of the following are ways to charge an object?

A.

Dodkfjduction
B.

Friction
C.

Conduction
D.

Sendorction
E.

Induction

Correct Answer(s)
B. Friction
C. Conduction
E. Induction

Explanation
The question asks for three ways to charge an object. The options "Dodkfjduction" and "Sendorction" are not recognizable terms and do not relate to charging an object. However, "Friction," "Conduction," and "Induction" are all valid methods of charging an object. Friction occurs when two objects rub against each other, transferring electrons and causing one object to become positively charged and the other to become negatively charged. Conduction happens when a charged object touches another object, transferring the charge. Induction occurs when a charged object is brought near but not touching another object, causing a redistribution of charges in the second object.

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9.

CONSERVATION OF CHARGECharges are never....

Correct Answer(s)
created or destroyed
destroyed or created

Explanation
Charges are never created or destroyed, which means that the total amount of charge in a closed system remains constant. This is known as the conservation of charge. According to this principle, charges can only be transferred from one object to another, but they cannot be created or destroyed. Therefore, the correct answer is "created or destroyed, destroyed or created."

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10.

Why do we use an electroscope?

A.

Because we want to know how things change over time.
B.

Because we want to know why things are electrical.
C.

Because we want to know if an object is charged or not.

Correct Answer
C. Because we want to know if an object is charged or not.

Explanation
An electroscope is used to determine if an object is charged or not. It works by detecting the presence of electric charges on an object. When an object is charged, it will cause the leaves of the electroscope to either repel or attract each other, indicating the presence of a charge. By using an electroscope, we can easily identify if an object has an electric charge, which is important in various scientific experiments and applications.

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11.

Can you tell if an object is negatively charged or positively charged with an electroscope?

A.

Yes, because electroscopes behave differently.
B.

Yes, because you can find out by checking the rim.
C.

Sometimes, if you look closely.
D.

No, because the electroscope is stupid.
E.

No, because the electroscope behaves the same way

Correct Answer
E. No, because the electroscope behaves the same way

Explanation
The correct answer is No, because the electroscope behaves the same way. An electroscope is a device used to detect the presence of electric charge. When an object with a positive charge is brought near the electroscope, the leaves of the electroscope will separate. Similarly, when an object with a negative charge is brought near the electroscope, the leaves will also separate. Therefore, the behavior of the electroscope does not change based on whether the object is negatively charged or positively charged.

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12.

Which of the following makes a good electrical insulator? Why?

A.

Glass, because it is slippery and smooth.
B.

Glass, copper, and wood, because electrons cannot move freely inside them.
C.

Glass, wood, and plastic, because electrons cannot move freely inside them.
D.

Copper, because it is sparky.

Correct Answer
C. Glass, wood, and plastic, because electrons cannot move freely inside them.

Explanation
Glass, wood, and plastic make good electrical insulators because electrons cannot move freely inside them. Insulators are materials that do not easily allow the flow of electric current. In these materials, the outermost electrons of their atoms are tightly bound and not able to move easily from one atom to another. This lack of mobility of electrons prevents the flow of electric current, making them good insulators.

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13.

What makes a good electrical conductor? Why?

A.

Copper, glass, and aluminum, because their electrons can move freely.
B.

Copper, mercury, and aluminum, because their electrons can move freely.
C.

Glass, plastic, and cardboard because their electrons cannot move freely.

Correct Answer
B. Copper, mercury, and aluminum, because their electrons can move freely.

Explanation
Copper, mercury, and aluminum are good electrical conductors because their electrons can move freely. In these materials, the outermost electrons of their atoms are loosely bound and can easily move from one atom to another. This allows for the flow of electric current through the material.

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14.

What is static electricity?

A.

Static, unmoving particles.
B.

Moving electricity.
C.

Electric charge at rest; generally produced by friction or induction

Correct Answer
C. Electric charge at rest; generally produced by friction or induction

Explanation
Static electricity refers to electric charge that is at rest. It is typically generated through friction or induction. Unlike moving electricity, static electricity involves unmoving particles.

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