http://www.ck12.org Chapter 16. Static Electricity
(b) induction.
(c) friction.
(d) grounding.- Two objects each carry a charge and they attract. What do you know about the charge of each object?
(a) They are both charged positively.
(b) They have opposite charged from each other.
(c) They are both charged negatively.
(d) Any of the above are possible. - A material that easily allows the flow of electric charge through it is called a(n)
(a) insulator.
(b) conductor.
(c) semiconductor.
(d) heat sink. - What is the most common way of acquiring a positive static electrical charge?
(a) by losing electrons
(b) by gain protons
(c) by losing protons
(d) by gaining electrons
(e) by switching positions of electrons and protons in the atom
Review
Questions
- How does friction generate static electricity?
(a) Friction heats the materials, thus causing electricity.
(b) Rubbing materials together displaces atoms, causing sparks to fly.
(c) Rubbing materials together can strip electrons off atoms, causing one material to become positive and
the other to become negative.
(d) Rubbing materials together causes neutrons and electrons to trade places.
(e) None of the above. - What electrical charge does an electron have?
(a) A negative charge.
(b) A positive charge.
(c) A neutral charge.
(d) May be any of the above.
(e) None of the above. - What happens when opposite charges get close to each other?
(a) They repel each other.
(b) They attract each other.
(c) Nothing happens.
(d) They attract surrounding objects.
(e) They repel surrounding objects. - What is an electrical conductor?
(a) A material that allows electrons to travel through it freely.
(b) A material that doesn’t allow electrons to travel through it freely.