REVIEW FOR THE 3RD QUARTER EXAM (DAY 2)

What will happen when two like charges are brought together? They will _______.

• repel each other

• attract each other

• neutralize each other

• have no effect on each other

Which of the following describes the usual way by which a material can gain a negative charge?

• Losing protons

• Gaining proton

• Losing electrons

• Gaining electrons

Electric energy is produced by the movement of ________.

• neutrons

• protons

• electrons

• nucleus

Which of the following DOES NOT allow electrical charges to flow easily?

• Copper

• Metal rod

• Silver

• Rubber

When an object is positively charged, it has ________.

• no protons

• no electrons

• fewer electrons than protons

• more electrons than protons

Rubbing a balloon on hair is an example of static charge build up created by____________

• Conduction

• Friction

• Induction

• Reduction

If you rub a glass rod with a piece of silk, the rod becomes positively charged. This means that_____________.

• glass attracts more protons

• protons have moved to the rod

• friction destroys electrons in the rod

• the silk has become negatively charged

A type of charging process where an object can be charged without actual contact to any other object.

• Charging by induction

• Charging by reduction

• Charging by friction

• Charging by conduction

A charged iron rod is brought near a metal ball that is mounted on a

rubber sheet. If the metal ball acquired a negative charge after it was grounded momentarily, what must be the charged of the iron rod?

• negative

• neutral

• positive

• uncertain

If an element has 6 protons, 6 neutrons, and 6 electrons, what is the charge of the element?

• Negative

• Neutral

• Positive

• Uncertain