Checking for Understanding- Electricity and Magnatism

What does a simple electric motor do?

• mechanical energy is changed to electrical energy by a generator.

• Changes thermal energy to Electricity

• electric motor changes electrical energy to mechanical energy.

• Electricity is changed to chemical energy

Where can Electric motors get their source of electricity?

• the electromagnet is connected to a battery or other source of electric current.

• Electric motors get their energy from the sun

• Electric motors energy comes from the burning of fuels

• All of the above

Which of the following statements best describes a Turbine.

• contains coils of wire that are stationary, and magnets that are rotated by turbines.

• -are huge wheels that rotate when pushed by water, wind, or steam.

• contains an electromagnet that rotates between the poles of a magnet.

• a machine that produces an electric current when a coil of wire wrapped around an iron core is rotated near a magnet.

What are the sources of energy that can turn the wheel on a Turbine?

Check all that apply

• Water

• Steam

• Electricity

• Wind

Tags

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Which of the following statements best describes a Generator.

• A generator changes electrical energy to mechanical energy.

• electric current flowing through a wire wrapped around an iron core forms a generator

• a Machine that is used to make thermal and Chemical energy

• is a machine that produces an electric current when a coil of wire wrapped around an iron core is rotated near a magnet.

Where is the energy for our houses obtained from?

• Electric motors at power plants produce electric energy for our homes

• Generators at power plants produce electric energy for our homes

• Electromagnets at power plants produce electric energy for our homes

• An electromagnet is connected to a battery or other source of electric current.

What is an Electromagnet?

• – is a machine that produces an electric current when a coil of wire wrapped around an iron core is rotated near a magnet.

• a coil of wire spinning around a magnet or

• is formed when a wire in an electric circuit is wrapped around an iron core producing a magnetic field.

• a magnet spinning around a coil of wire .

Using your notes, Imply the following question: How can you stop an Electromagnet from working?

• Add more Electricity to the magnet

• Turn off the Electricity

• Use more chemical energy

• Electromagnets can not be controlled

Which of the following statements best describes Magnetism.

• electromagnet loses its magnetism when the electric current stops flowing.

• a machine that contains an electromagnet that rotates between the poles of a magnet.

• Magnetism is a force that is between non-metallic objects

• is the force of attraction or repulsion of magnetic materials

Tags

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What is a Magnetic field?

• It is where metal objects can be found in the ground

• The area surrounding a magnet that applies a force, a push or pull, without actually touching an object.

• a coil of wire wrapped around an iron core that is applying a push or pull on nearby objects

• is the force of attraction or repulsion of magnetic materials

Tags

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