Static electricity - Assessment

1.

Multiple Choice

10 sec

1 pt

In a neutral atom, the number of electrons is equal to the number of _______.

Neutrons

Orbits

Protons

subatomic particles

2.

Multiple Choice

20 sec

1 pt

If two charges repel each other, the two charges must be

Positive and neutra

Positive and negative

positive and neutral

negative and negative

3.

Multiple Choice

20 sec

1 pt

An object becomes charged when the atoms in the object gain or lose

electrons

protons

neutrons

all of the above

4.

Multiple Choice

30 sec

1 pt

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.

5.

Multiple Choice

20 sec

1 pt

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.

6.

Multiple Choice

30 sec

1 pt

Objects that have opposite charges

are attracted to each other, and the force between the objects pulls them together.

are attracted to each other, and the force between the objects pushes them apart.

are repelled by each other, and the force between the objects pulls them together.

are repelled by each other, and the force between the objects pushes them apart.

7.

Multiple Choice

30 sec

1 pt

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

reduction

induction

conduction

friction

8.

Multiple Choice

30 sec

1 pt

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

The balloons will repel each other.

The balloons will attract each other.

The balloons will become positively (+) charged.

The balloons will pop.

9.

Multiple Choice

30 sec

1 pt

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

friction

induction

conduction

10.

Multiple Choice

20 sec

1 pt

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

static electricity

current electricity

lightning

electrons

11.

Multiple Choice

10 sec

1 pt

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

conduction

friction

induction

12.

Multiple Choice

30 sec

1 pt

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

13.

Multiple Choice

30 sec

1 pt

What types of charges attract?

Positive and Positive

Positive and Neutral

Negative and Neutral

Positive and Negative

14.

Multiple Choice

30 sec

1 pt

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

The doorknob sends a burst of electric current into your body

Millions of electrons go from your finger into the doorknob

The doorknob sends millions of electrons into your finger

Your finger becomes negatively charged

15.

Multiple Choice

20 sec

1 pt

Which of the following is caused by static electricity?

a stove getting hot when it is turned on

a magnet being attracted to a refrigerator

a lightning strike during a storm

a light bulb coming on when a switch is turned on

16.

Multiple Choice

10 sec

1 pt

An object that is neutral contains the same number of electrons and protons.

True

False

17.

Multiple Choice

20 sec

1 pt

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

induction

conduction

friction

18.

Multiple Choice

30 sec

1 pt

Lightning occurs because ___.

the negative charges at the bottom of clouds are attracted to the positive charges on the ground.

the positive charges at the bottom of clouds are attracted to the negative charges on the ground.

the positive and negative charges inside clouds are attracted to each other

All of these reasons are correct.

19.

Multiple Choice

20 sec

1 pt

Two objects that have the same charges will...

attract

repel

not move

20.

Multiple Choice

30 sec

1 pt

Static charges build up when

protons move within an object

electrons move within an object

neutrons move within an object

the nucleus moves within an object

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