Electricity and Magnetism

Which two charges interact with each other (attract)

• positive and positive (+ and +)

• negative and negative (- and-)

• positive and negative (+ and -)

• Charges do not interact, people do!

Tags

NGSS.MS-PS2-3

When you rub balloons on your head electrons leave your hair and make you look like a crazy person! Now the balloon's charge is ____.

• positive

• neutral

• It doesn't have a charge, after all, it's just a balloon!

• negative

If something is ferromagnetic, it must contain ____________.

• metal

• iron

• mercury

• ionic compounds

When electric charges of an object change, what two redistibution methods must occur?

• singing and bootie shaking

• induction and polarization

• friction and conduction

• friction and induction

When you increase the length of a wire, _____________

• its temperature increases

• it becomes bobbed wire

• its diameter increases

• its resistance increases

Why can't we use lightning as a source of energy for appliances?

• it has too much energy and would blow a fuse

• it is static electricity, and appliances require steady current

• We can! What's the problem?

• It is not available all the time

When you rub a balloon on your head, what method of redistributing charges is used?

• magnetism

• conduction

• polarization

• friction

Which of the fololwoing are basic circuit features?

• electrical devices and electrical energy sources

• conducting wires and sources of electrical energy

• electrical devices and sources of electrical energy

• All the things written in the other choices...duh!

What is Georg Ohm famous for?

• He figured out that current, voltage, and resistance in a ciruit are always related in the same way.

• He figured out that current, voltage, and resistance in a ciruit are always related in different ways

• He figured out that current, voltage, and resistance in a ciruit are always significant

• He figured out that current, voltage, and resistance in a ciruit are always related by marriage.

Two southern poles brought together will ______

• attract

• repel

• combine

• create a northern pole

Tags

NGSS.MS-PS2-5