Match the following charges with their corresponding particles.

• Electron

• Negative

• Neutron

• Positive

• Proton

• Neutral

Which of the following is a property of electric forces?

• They can only attract.

• They can only repel.

• They can both attract and repel.

Electric forces are strongest when objects are (a)   .

• Attracted

• Repelled

• Neutral

• Charged

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

True or False: Electric forces can act over a distance without direct contact.

• True

• False

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following shows that opposite charges attract?

• 
• 
• 
• 

The forces exerted between electric charges at a distance is evidence that each charge is surrounded by an electric _________________

• field

• current

• circuit

• voltage

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A material through which electrons can move easily is a (a)   .

• conductor
• charge
• insulator
• magnet

Each of the following is an example of an insulator EXCEPT (a)   .

• copper
• glass

• rubber

• wood

Tags

NGSS.MS-PS3-3

An object with equal amounts of positive and negative charge is electrically (a)   .

• charged

• negative

• neutral

• positive

A student plans an investigation to determine whether an object has a positive charge, a negative charge, or is electrically neutral. Which statements describe procedures and the expected results that the student should follow?

• Bring a balloon that has a negative charge near the object. If the balloon is repelled, the object is electrically neutral.

• Bring a balloon that has a positive charge near the object. If the balloon is attracted, the object has a negative charge.

• Bring a balloon that has a positive charge near the object. If the balloon is attracted, the object is electrically neutral.

Tags

NGSS.MS-PS2-5