Show:
Magnets
Electromagnets
Generators and Motors
Energy and Conservation
Grab Bag
100
Magnetism is the strongest here.
What is are the poles.
100
What are some places that you can find electromagnets?
Stereo speakers, infact in any kind of speakers be it your earphones, headphones, car horns, etc. They can also be found in the classic door bells.
100
A what measures the amount of electricity that your family uses.
What is a Meter.
100
Electricity produced by moving water produced by dams that are built on or near large rivers.
What is Hydroelectricity.
100
Magnetism comes from moving what?
What is electrons.
200
What two things cause Earth's magnetic field?
1. It has an iron and nickel core. 2. Earth rotates fast enough.
200
Engineers use electromagnets for what?
What is transportation.
200
A generator turns what energy into electrical energy?
What is Mechanical Energy.
200
The conversion of sunlight directly into electricity.
What is Solar Energy.
200
The system connecting all power plants all across the world is.
What is the Electric Power Grid
300
What three materials stick to magnets?
1. Iron 2. Nickel 3. Cobalt
300
The three main parts of an electromagnet.
1. Coil 2. Core 3. Power Source
300
A motor mad to run on DC has a reversing switch called a?
What is a Commutator.
300
Energy from within the Earth.
What is Geothermal Energy.
300
What does MRI stand for?
What is Magnetic Resonance Imaging.
400
A temporary magnet is made this way.
What is by taking a magnetic substance and stroking it against a permanent magnet?
400
The process of getting electrons to move through a wire by changing the magnetic field is called?
Induction.
400
Four main parts of an AC motor.
What is rotating wire (armature), alternating electric power source, permanent magnet(s), and brushes.
400
Energy produced by spinning turbines produced by the wind.
What is Wind Energy.
400
What are the glowing lights that we see in the sky near Earth's poles called.
What are auroras.
500
Describe what happens in these situations: a. North Pole to North Pole b. South Pole to South Pole c. North Pole to South Pole d. South Pole to North Pole
What is: a. repel b. repel c. attract d. attract
500
Some electromagnets can lift up to how many pounds.
What is 2200 pounds or 1000 kilograms.
500
With what 4 main materials can you use to make a simple electric motor.
What is a conductor, a power source, a rotating wire armature, and a permanent magnet .
500
What are some ways to conserve energy.
Conserve water, turn off lights when not needed, open blinds or drapes instead of turning on lights, conserve energy with windows being closed instead of turning on heaters, use LED lights and CFL lights instead of incandescent bulbs, turn off electrical devices when not in use, and monitor your thermostat.
500
What generates most of the Unite States energy?
What is Fossil Fuels.