Electric Charge and Force

An electric charge is an ...... property of matter.

an object can have a

• negative charge

• positive charge

• no charge

• all of the above

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

The SI unit of electric charge is....

• Coulomb (C)

• Meter (M)

• Kelvin (K)

• Hertz (Hz)

Electric charge depends on....

• a balance of protons and electrons

• protons

• electrons

• an imbalance of protons and electrons

Tags

NGSS.MS-PS2-3

All of these are an example of an electric charge except

• two charged balloons have the same charge and repel each other

• one person shaking his right hand with another person's left hand

• a balloon and hair oppositely charged attracting each other

• a positively charged rod brought near a metal doorknob

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Materials such as the copper in cords are called....

• electrical conductors

• thermal conductors

• nuclear energy conductors

• energy providers

Cardboard, glass, silk, and plastic are....

• charged materials

• conductors

• insulators

• none of the above

Objects can be charged by....

• contact

• friction

• all of the above

• none of the above

..... is a material in which charge cannot move freely.

• Electrical insulator

• Thermal conductor

• Electrical conductor

• Thermal insulator

Like charges...., and opposite charges....

• repel, repel

• attract, repel

• repel, attract

• attract, attract

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5