Motors/Generators & Earth's Magnetic Field

Front

A generator transforms __________ energy into _______ energy.

Back

mechanical, electrical

Front

When a domain of atoms are grouped together and aligned in the same orientation, a ___________________ is created.

Back

magnetic field

Front

An electromagnet can be created by __________.

Back

running a current through a wire coiled around an iron core

Front

What subatomic particle causes magnetism in an atom?

Back

electrons

Front

What happens to the strength of an electromagnet as you add more coils around it?

Back

Increases

Front

What is the main function of a motor?

Back

To convert electrical energy into mechanical energy.

Front

What is the role of Earth's magnetic field?

Back

To protect the planet from solar wind and cosmic radiation.

Front

Define electromagnetism.

Back

The interaction of electric currents or fields and magnetic fields.

Front

What is a magnetic field?

Back

A region around a magnetic material or a moving electric charge within which the force of magnetism acts.

Front

What is the difference between a permanent magnet and an electromagnet?

Back

A permanent magnet maintains its magnetic properties, while an electromagnet's magnetism can be turned on and off.