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Fields and Forces
Question | Answer |
---|---|
What is the charge of electrons? | Negative |
What is the charge of protons? | Positive |
What is the charge of neutrons? | Neutral (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 |
What is conduction? | Two objects with a different charge touch, and electrons are transferred |
What is induction? | An electrically charged object is brought near a neutral object. Parts of the neutral object become charged with static electricity |
What is friction? | Electrons are transferred when two neutral objects are rubbed together |
What is a conductor? | Material that allows electrically charged particles to easily flow through it |
What is an insulator? | Material that does not allow electrically charged particles to easily flow through it |
What are things that make electromagnets stronger? | More wire turns, greater voltage, adding dry cells, increasing the size of the iron core, lowering the temperature |
What affects friction the most? | 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 |