Vocabulary
A subatomic particle with a negative charge that will always move towards a more positive object.
What is an electron?
The ability to do work.
What is energy?
An object, like metals, that is good at moving electrons.
What is a conductor?
North to South
What is the direction a magnetic force flows?
This planet has a core rich in iron, therefore exhibiting magnetic properties.
What is Earth?
Any iron-containing object that can produce attractive or repulsive forces
What is a magnet?
Imagine an object moving down a ramp. State what happens to the object's kinetic energy as it travels down the ramp.
The kinetic energy will increase.
Any object, such as rubber, that cannot move electrons very well.
What is an insulator?
The element/metal that is the most attractive to magnets.
All magnets contain this metal.
What is iron?
The opposite ends of a magnet that attract to each other.
What are the North and South poles?
The movement of electrons towards a more positive object/location.
What is an electric current?
These two properties vary with kinetic energy.
What are mass and speed?
The metal copper is a very strong _______ of electricity.
Conductor
Regions on a magnet where the magnetic forces are the strongest.
What are the North and South poles?
The opposite charges/particles that attract and create electricity.
What are positive and negative charges?
OR
What are protons and electrons?
The area/region around a magnet that will exert a force upon any iron-containing object.
What is a magnetic field?
These two properties vary with potential energy.
What are mass and height?
True or False!
The movement of protons from a positive to a negative object creates an electric current.
False; the movement of electrons from negative to positive creates an electric current.
You get two smaller, weaker magnets each with their own North and South poles
What happens if you cut a magnet in half?
State how potential and kinetic energy are related to each other.
They have an indirect relationship.
When one increases, the other decreases.
They can convert into each other.
The law that states energy can neither be created nor destroyed; only changed from one form into another form.
What is the law of conservation of energy?
An object has a mass of 1.5kg and is at a height of 7m. If we assume this object is experiencing the pull of Earth's gravity (9.8 m/s/s), then how much potential energy (PE = mgh) will it have?
Round to the nearest whole number and HAVE UNITS!!
103 Joules of potential energy
Fill in the Blanks!
When you rub your socks on a carpet, you are building _____ ______. Then, when you touch a metal doorknob, all that charge is released as ______ _______.
(both blanks are necessary for points)
Static electricity; static/electric discharge
What is an electromagnet (or solenoid)?
A metal object is suspended in mid-air due to a device receiving an electric current. An electromagnet is pulling up on it, while Earth's gravity is pulling down on it.
State what happens to the metal object's potential energy when the electric current is turned off.
The potential energy will decrease.