Name two sources of energy that large electric generators use to create electricity for a country.
water, wind, or steam
What's this? Name the parts and say what they do (Hint: do they move or stay still?)
a dynamo; a magnet (moves) and a coil (stays still)
What does the hand mixer use to work? What parts does it have?
an electric motor; a coil between 2 magnets
Electric motors transform ... energy into ... energy (movement).
electrical; mechanical
When the LIKE poles of two magnets come close, they will...
repel each other
This mineral is an example of a ... magnet. It's called...
natural; magnetite
Electricity produces ... and magnetism produces ...
magnetism; electricity
True or false? Wind turbines use electric motors to work. Justify your answer.
False! Electric motor = electric current -> movement; electric generator = movement -> electric current
This is one type of ... How does it work? (Hint: explain what moves)
electromagnetic generator; The magnet moves inside the coil, which produces electricity.
This is one type of... How does it work? (Hint: explain what moves)
electromagnetic generator; The coil turns between two magnets, which produces electricity.
Explain what happens when you cut a magnet in half. (Hint: think about the poles)
It creates smaller magnets with two different poles
What's inside of the second coil? Which coil acts as a stronger magnet? Which one is an electromagnet?
The coil with the iron rod inside is a stronger magnet. It's an electromagnet because it's magnetic only when an electric current passes through the coil.
Imagine you're holding a compass. 1) Which GEOGRAPHIC pole does the needle point to? 2) Which MAGNETIC pole does it point to?
1) north 2) south
What is the Earth's core composed of? This makes the Earth act like a giant...
a mixture of very hot iron and nickel; MAGNET!
Describe how this bike's light works.
The bike wheel moves when you pedal which turns the magnet inside the dynamo. This creates an electric current, which powers the light.
When the UNLIKE poles of two different magnets come close, they will...
attract each other
Which of these machines use electric motors?
blender, toaster, washing machine, microwave, hairdryer, and fan!
What is the name for the invisible area around a magnet (where the magnet can attract and repel)?
the magnetic field
What's the name of this part?
a coil