Show:
Magnets
electromagnet
generators and motors
Energy and Conservation
Miscellaneous
100
What are the Poles
Where is magnetism strongest?
100
What is an electromagnet?
What is when an electric current flowing through a coil of wire wrapped around a solid iron core?
100
What is a generator?
A generator is a machine that turns mechanical energy to electrical energy?
100
What is the most used energy resource in the U.S?
What is coal?
100
If you cut a magnet in half will it still have a North and a South pole?
What is Yes?
200
1. It has an iron nickel core 2.Earth rotates
What causes the Earths magnetic field?
200
What are two uses of electromagnets?
What are Maglev trains and generators.
200
What are three sources of mechanical energy?
What are wind, crank, and moving water?
200
What is the most used energy resource in Canada?
What is petroleum?
200
Magnetism comes from moving What?
What is Electrons
300
A temporary magnet is mad this way.
What is by taking a magnetic substance and stroking it against a magnetic substance?
300
Describe the three main parts of an electromagnet?
What is a source of electricity, a conductor, and a solid iron core.
300
What is an electric motor?
What is a device that changes electric energy to mechanical energy?
300
What is the unit used to measure power
What is watt?
300
What are three ways to Conserve energy?
1. turn off the lights when no one is in the room. 2. conserve water. 3. close doors and when heating or cooling the room.
400
What are three materials that stick to magnets.
What are iron, nickel,and cobalt?
400
How can you increase the strength of an electromagnet?
What is increasing the number of loops of wire?
400
List the parts of an AC motor?
1. a rotating wire coil or armature. 2. an electric power source 3.Brushes that transfer the electric current to the armature 4. Permanent magnet that uses electric current.
400
What is the unit of measurement equal to 1,000 watts?
What is a Kilowatt?
400
What does the term repel mean?
To push apart.
500
Describe what happens to magnets in these situations: a. North pole to North pole b.South pole to South Pole c. South pole to North pole
a. repel b.repel c.attract
500
How man kilograms can some electromagnets hold?
What is 1,000 kilograms?
500
What are the eight stages of electricity getting to your house?
1. starts at a power plant 2. Next goes through a turbine 3. Goes through a generator 4. Goes through a transformer (increases voltage) 5.goes over transmission wires 6. Next it goes through another transformer (increase voltage) 7. Goes through a meter that measures the voltage 8. Goes into outlets in your home
500
What are Five renewable energy sources?
1. Geothermal 2. Tidal 3. Solar 4. Wind 5. Hydroelectric
500
What does M.R.I. stand for?
What is Magnetic Resonance Imaging?