Circuits
What will stop a circuit from working and interrupt it's flow?
A. wire
B. wood
C. light bulb
D. battery
wood
What type of electricity is on the surface and can happen when you rub things together?
static electricty
Do opposites attract or repel?
attract
True or False:
Static electricity needs some sort of metal conductor.
False, it does not. It is made by an inbalance.
a bar magnet has two poles. If you break it in half to make two smaller bar magents, how many poles will each bar magnet have?
2, just like the larger magnet
What role does a paper clip do in a circuit?
It conducts electricity
What is an example of an insulator?
wood, air, rubber, plastic, glass, ceramic etc
Would a magnet attract or repel paper clips?
attract
Does electricial insulators allow electricity to flow through it?
No, it usually has too much electrical resistance.
Which of the following are magnetic materials?
A. plastic and iron
B. Steel and iron
C. Paper and cloth
D. Wood and silver
B
Is it better to have an insulator or a condctor in a circuit?
conductor
What is an example of a conductor?
copper, silver, aluminum, gold, iron, steel
Would a magnet attract or repel wood?
repel
What could cause a circuit to be open?
broken wires
loose parts
blown fuse
burnt out part
turned off
What can effect the strength of a magnetic field?
How close you are
How large the magnet is
What the magnet is made of
What is the name for a circular pathe for electrical current to travel?
circuit
What is an example of electricity made by humans?
turning on a light
What type of magnet powered by electricity can be turned on and off?
electromagnet
If a circuit is open is the light on or off?
off
What is one way to make an electromagent stronger?
Use more coils
Use a larger iron nail
Use thicker wire
Use bigger batteries
What 4 things must a closed circuit haved to work?
bulb, wire, battery, unbroken path
What is an example of natural electricity?
lightning
What type of magnet is permanent?
bar magnet
Static electricity is cause by an imbalance of ______________ and _________________ charges.
positive
negative
Consider the following:
X,Y,Z,T
X repels Y
Y attracts Z
Z attracts T (which is positively charged)
Which objects are negatively charged?
Z