12 terms

4th grade science test electricity and magnetism

All about electricity and magnetism!!
how does an abject become charged with static electricity?
By adding or losing eletrons (friction)
What will happen when two charged objects are broght together?
opposites attract and likes repel
How does a toggle swicth work in a simple circuit?
up-off down-on
identify and describe two types of circuits.
A parallel circuit- has more than one path,and, a series circuit- has one path.
What energy transformation takes place in the following:
generator: motion-electricity: Motor: electricity- motion
incandescent light bulb
electricity to light and heat
electricity to light
what is one thing an electromagnet can do that a natural magnet cannot?
you can turn it off
what part of a compass points to magnetic north
the needle
what are most good electrical conductors made of
what is a good material for insulating electric wires
rubber or plastic
what are the properties of magnetic poles
opposites attract and likes repel