Electric Charges and Electric Forces

A particle that has equal amounts of positive charge and negative charge is

• positively charged

• electrically neutral

• negatively charged

Which material is an insulator in which electric charges cannot easily move?

• Gold

• Plastic

• Aluminum

How do objects become electrically charged?

• Protons move from one object to another.

• Neutrons move from one object to another.

• Electrons move from one object to another.

A negatively charged particle has

• more protons than electrons.

• more electrons than protons.

• neutrons and protons but no electrons.

• an equal number of protons and electrons.

Which material is classified as an insulator?

• iron

• gold

• plastic

• aluminum

Which material is classified as a conductor?

• glass

• paper

• wood

• copper

When two objects touch, which object becomes negatively charged?

• the object that has the greater mass

• the object that loses electrons more easily

• the object that has the smaller surface area

• the object that holds electrons more tightly

Tags

NGSS.MS-PS2-3