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Fields and Forces
Question | Answer |
---|---|
Charge of electrons | negative |
Charge of protons | positive |
Charge of neutrons | Negative (no charge) |
How do motors convert energy? | From electrical to mechanical |
How do generators convert energy? | From mechanical to electrical |
What is transferred during conduction? | Electrons |
What is the sudden flow of electrons between objects? | Static discharge |
conduction | Two objects with a different charge touch, and electrons are transferred. |
induction | An electrically charged object is brought near a neutral object. Parts of the neutral object become charged with static electricity. |
friction | Electrons are transferred when two neutral objects are rubbed together. |
conductor | Material that allows electrically charged particles to easily flow through it |
insulator | Material that does not allow electrically charged particles to easily flow through it |
Things that make electromagnets stronger | More wire turns, greater voltage, adding dry cells, increasing the size of the iron core, lowering the temperature |
What most affects friction? | The textures of the object and the surface |
What two things affect gravitational force? | Mass (greater mass = greater force) and distance (less distance between objects = greater force) |
Mass vs. weight (Compare Earth to the moon.) | Mass is the same everywhere, but objects weigh less on the moon than on Earth due to the weaker gravitational pull on the moon. |
Like ___________, opposites _________. | Like REPELS, opposites ATTRACT. |
What is static electricity? | The buildup of electric charge on an object |