G7A T3 U1M3L2 Electric Forces

Multiple Choice

The correct answer is

• A

• B

• C

• D

Poll

What do you think is true about electric charges?

• They have north and south poles

• They can be positive or negative

• They are found in batteries ONLY

• They can attract or repel each other

Multiple Choice

Objects that have opposite charges repel each other.

• True

• False

Multiple Choice

Based on the experiment, the electric force is a ________ force.

• contact

• noncontact

• moving

• stationary

Labelling

Label the picture

Drag labels to their correct position on the image

Electric field

Electric charge

Drag and Drop

The electric ​

Placeholder

is an ​

Placeholder

around a ​

Placeholder

where electric ​

Placeholder

is applied.

Drag these tiles and drop them in the correct blank above

field

invisible region

visible region

charged

force

Drag and Drop

The electric ​

Placeholder

is an ​

Placeholder

around a ​

Placeholder

where electric ​

Placeholder

is applied.

Drag these tiles and drop them in the correct blank above

field

invisible region

visible region

charged

force

Labelling

Label the parts correctly

Drag labels to their correct position on the image

Electric charge

decrease

Distance

increase

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Drag and Drop

The electric ​

Placeholder

is an ​

Placeholder

around a ​

Placeholder

where electric ​

Placeholder

is applied.

Drag these tiles and drop them in the correct blank above

field

invisible region

visible region

charged

force

Multiple Choice

The strength of the electric field is determined by:

• the total amount of charge

• the distance between the charges

• both are correct

• neither is correct

Drag and Drop

As the total amount of charge increases, the electric field strength ​

Placeholder

As the distance between the charges increases, the electric force between them ​

Placeholder

Drag these tiles and drop them in the correct blank above

increases

decreases

remains the same

does not change

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Multiple Choice

What do you think a model of the electric field would look like if two opposite charges interact?

• The model would show that the field connects the two charges because they are repelled by one another

• The model would show that the field connects the two charges because they are attracted to one another

• The model would show that the field separates the two charges because they are attracted to one another

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Categorize

Options (4)

two similar charges are close together

two opposite charges far apart

two similar charges are far apart

two opposite charges are close together

The electric potential energy will

increases if

decrease if

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Fill in the Blank

An electrically charged object has an ________ amount of positive or _________ charges.

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​Vocabulary

• Electrically neutral

• Induction

• Insulator

• Conductor

• Conduction

Multiple Choice

Electric charge can be transferred by _______ ways

• six

• five

• four

• three

Match

Match the following

• Friction

• Conduction

• Induction

• Electric discharge

Rubbing

With touching

Without touching

The shock

• Rubbing

• With touching

• Without touching

• The shock

Multiple Choice

Objects must touch each other to transfer a charge by induction.

• True

• False

Multiple Choice

Why do negative charges in the aluminum cans tend to move away from the balloon?

• The balloon is positively charged and like charges repel each other.

• The balloon is negatively charged and like charges repel each other.

• The balloon is negatively charged and like charges attract each other.

Multiple Select

Why are electric wires covered with rubber or plastic?

• Because they are good electric conductors.

• Because they are good electric insulators.

• Because they look classy.

• Because they prevent charges from leaving the wire

Fill in the Blank

Wires are often made of _______ because it is a good conductor.

Categorize

Options (10)

Glass

Rubber

Wood

Air

Lightning rod

Metals

Copper

Aluminum

Has balanced charges

Charging without touching

Organize these options into the right categories

Conductors

Insulators

Electrically neutral

Induction

Drag and Drop

Charged particles flow from the object with a ​

Placeholder

charge to the object with a ​

Placeholder

charge.

Drag these tiles and drop them in the correct blank above

greater concentration of negative

lower concentration of negative

lower concentration of positive

greater concentration of positive

Multiple Choice

Charge is _______

• lost

• conserved

• destroyed

• created

Fill in the Blank

_________ is transferring charge with touching.

Drag and Drop

The total charge in a closed system ​

Placeholder

Drag these tiles and drop them in the correct blank above

remains the same

increases

decreases

changes

Multiple Choice

The correct answer is:

• A

• B

• C

• D

Multiple Choice

The correct answer is:

• A

• B

• C

• D