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Interactions: Unit 1 Part 1 Electric Charges

Total questions: 43

Worksheet time: 33mins

Name
Class
Date
1.

____ is a field in a region of space that exerts electric force on charged particles in a field produced by electric charges or by changing magnetic fields

a)

Electric Field

b)

Field

c)

Electric Charge

d)

Electric Force

2.

This is a property that causes subatomic particles such as protons and electrons to attract or repel one another

a)

Electric Force

b)

Force

c)

Static charge

d)

Electric Charge

3.

This is a material through which electric charge cannot flow easily

a)

Electrical Insulator

b)

Electrical Conductor

c)

Conduction

d)

Induction

4.

This is a law stating that the total electric charge in an isolated system is constant; electric charge is never created or destroyed

a)

Law of Conservation of Charge

b)

Law of Equal Charges

c)

Law of Conduction

d)

Law of Static Charges

5.

This is a push or a pull

a)

Force

b)

Electric Force

c)

Electric Charge

d)

Electric Field

6.

This is The study of the behavior of electric charges, including how charge is transferred between objects

a)

Electric Charge

b)

Static Electricity

c)

Electricity

d)

Conduction

7.

This is the transfer of charge without contact between materials.

a)

Friction

b)

Conduction

c)

Induction

d)

Force

8.

This is a material’s ability to allow heat or electric charges to flow

a)

Conductivity

b)

Electrical Conductor

c)

Induction

d)

Static Electricity

9.

This is the attraction or repulsion between electrically charged objects

a)

Electric Force

b)

Force

c)

Electric Charge

d)

Electric Field

10.

This is a material through which electric charge can flow easily

a)

Electrical Conductor

b)

Electrical Insulator

c)

Conductivity

d)

Induction

11.

Which of the following statements are true about scientific models?

a)

The more specific the better. Models need to have labels to make them clear

b)

They are very useful for looking at phenomena

c)

They help create mental pictures

d)

All of the above

12.

What are the three parts of atoms?

a)

Nucleus, neutral, and proatom

b)

Neutron, Protons, elections

c)

Neutral, positive, negative

d)

Ion, negatron, proton

13.

What are the two kinds of charged particles in atoms and what is their charge? (Choose two answers)

a)

Proton (positive)

b)

Proton (negative)

c)

Electron (positive)

d)

Electron (negative)

14.

What does the law of electric charges say about two objects that each have a positive charge?

a)

Objects with the same charge have no effect on each other

b)

Objects with the same charge attract each other

c)

Objects with the same charge repel each other

d)

Objects with the same charge both attract and repel each other

15.

What does the law of electric charges say about two charges in which one is a negative charge and the other is a positive charge?

a)

Objects with opposite charges have no effect on each other

b)

Objects with opposite charges attract each other

c)

Objects with opposite charges repel each other

d)

Objects with opposite charges both attract and repel each other

16.

What does the law of electric charges say about two charges in which one is positive and the other is neutral?

a)

Charged objects and neutral objects have no effect on each other

b)

Charged objects always shock and electrocute neutral objects

c)

Charged objects repel neutral objects

d)

Charged objects attract neutral objects

17.

What is a neutral atom and how does it become charged?

a)

A neutral atoms has no charge to it

b)

A neutral atom is neither positive nor negative

c)

A neutral atom becomes charged by gaining or losing electrons

d)

All of these responses

18.

Two charged objects that are near each other create a force on each other. There are two things that make an electric force stronger. Choose the two answer below that make an electric force stronger

a)

The amount of charge on the object. The larger the charge, the larger the force

b)

The amount of charge on the object. The larger the charge, the smaller the force

c)

The distance between the charges. The closer together the charges are, the larger the force

d)

The distance between the charges. The closer together the charges are, the smaller the force

19.

Two charged objects repel each other and start to move farther away. What happens to the elctric force on both objects as they move farther away?

a)

Nothing

b)

The force between them gets stronger, pushing them harder the further apart they are

c)

The force between them gets weaker; the electric force gets smaller as they get further away

d)

The force between them never changes

20.

What is the name of the region that is around all charged objects? That pushes or pulls another charged object?

a)

Electric space

b)

Electric track

c)

Electric field

d)

Electric area

21.

What are arrows or vectors (in relation to electric charges)?

a)

They point at something

b)

They are two completely different things

c)

They represent the forces on objects placed in an electric field

d)

They represent electricity in an electric field

22.

Which way do electric fields point to for negatively charged objects?

a)

Toward negatively charged objects

b)

Away from negatively charged objects

23.

Which way do electric fields point to for positively charged objects?

a)

Toward positively charged objects

b)

Away from positively charged objects

24.

When you take your clothes out from the dryer, sometimes there is static electricity on the clothes. This is caused by:

a)

Induction

b)

Conduction

c)

Friction

d)

None of the above

25.

An example of this type of charging is like when the hair on the wig stands up when it is placed on the Van de Graaff generator when it is turned on:

a)

Induction

b)

Conduction

c)

Friction

d)

None of the above

26.

An example of this type of charging is like when you have socks on and rub them on carpet, building up a charge

a)

Friction

b)

Conduction

c)

Induction

d)

None of these

27.

This type of charging occurs without the two objects touching.

a)

Friction

b)

Conduction

c)

Induction

d)

None of these

28.

This type of charging occurs when two things are rubbed together because when this happens, electrons from one objects are rubbed off to the other. This usually makes one object positive and the other negative

a)

Friction

b)

Conduction

c)

Induction

d)

None of these

29.

True or False. Static charge is the buildup of charge in an object and staying there

a)

True

b)

False

30.

True or False. Objects tend to be neutral. They can become charged by gaining or losing protons

a)

True

b)

False

31.

True or False. Objects want to hold a charge for as long as they can because objects don't want to be neutral.

a)

True

b)

False

32.

True or False. When objects do release this charge, this is called static discharge, which can occur with sparks or lightening.

a)

True

b)

False

33.

Examples of this type of material include plastic, rubber, and glass.

a)

Conductor

b)

Insulator

c)

Neither

34.

Examples of this type of material include metals like aluminum, copper, and silver

a)

Conductor

b)

Insulator

c)

Neither

35.

This type of material allows for the easy flow of electricity

a)

Conductor

b)

Insulator

36.

This type of material resists the flow of electrons, thus resists the flow of electricity.

a)

Conductor

b)

Insulator

c)

Neither

37.

What kind of charges does each object have?

a)

Both are negatively charged

b)

Both are positively charged

c)

A is positively charged, and B is negatively charged

d)

A is negatively charged and B is positively charged

38.

At which point is the electric filed around the positive charge the strongest?

a)

Point A

b)

Point B

c)

Point C

d)

They will all have the same electric force

39.

At which point is the electric filed around the positive charge the weakest?

a)

Point A

b)

Point B

c)

Point C

d)

They will all have the same electric force

40.

Two positively charged objects (Object A and Object B) are 8 inches apart. When a positively charged ball is hung at an equal distance between the two positively charged objects, the ball moves toward Object B (see picture ). What can you conclude about the relative amount of positive charge on Object A and Object B?

a)

Object A has more change than Object B

b)

Object B has more charge than Object A

c)

The two positive charges just cause a ringing bell phenomenon because they both push on it equally

41.

Look at the picture. Your physics teacher has prepared the room for the class's entry by suspending several inflated balloons from the ceiling. Upon entering the physics room, you observe two balloons being drawn towards each other as shown at the right. The attraction of these balloons for one another provides evidence that ______.

a)

both balloons are charged with the same type of charge

b)

Both balloons are charged with the opposite type of charge

c)

Only one of the balloons is charged; the other is neutral

d)

At least one of the balloons is charged; the other is either neutral or charged

42.

Look at the picture. On one occasion, the following charge interactions between balloons A, B and C are observed. In this case, it is known that balloon B is charged negatively. Based on these observations, what can you conclusively confirm about the charge on balloon A and C for this situation.

The charge of balloon A is ____?

a)

Positive

b)

Negative

c)

Neutral

d)

Not enough information provided

43.

Look at the picture. On one occasion, the following charge interactions between balloons A, B and C are observed. In this case, it is known that balloon B is charged negatively. Based on these observations, what can you conclusively confirm about the charge on balloon A and C for this situation.

The charge of balloon C is ____?

a)

Positive

b)

Negative

c)

Neutral

d)

Not enough information provided