Science Unit Test - Physics

What is electric charge?

• A propert of the particles of atoms involving electron charge

• The movement of electrons

• Electric charge doesnt exist

• Part of the atomic theory

Only (a)   move

An object with more electrons than protons will be (a)   charged

If there is an equal number of electrons and protons the object is (a)   charged

Two objects with (a)   charges will repel each other

two objects with unlike charges will (a)   each other

What is the law of electric charges?

• Objects in the mirror are closer than they appear

• Dry air is an insulator

• static electricity is the movement of electrons in a controlled way

• Two objects with like charges will repel each other, two objects with unlike charges will attract each other

True or false: In order for an object to become electrically charged it must gain or lose electrons

• True

• False

• no

• Neither

What is static electricity?

• The movement of electrons in a controlled way

• When the charge remains where the rubbing action occurs on each side of the charged objects

• when the air is moist and the water molecules transfer charges

• When an object is rubbed against another rapidly and both become charged the same

Why is static electricity worse in the winter? (basic answer)

(a)