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Fields and Forces
| Question | Answer |
|---|---|
| Charge of Electrons | Negative |
| Charge of Protons | Positive |
| Charge of Neutrons | Neutral/none |
| 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 | A 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 an electromagnet 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 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. |
| What are the necessary parts of an electromagnet? | A conductive metal wire, an iron core, and a dry cell (Battery) |
| What makes an atom neutral? | If it has an equal amount of protons and electrons. |
| What is a normal force? | A force of support that a surface normally gives by being there. |
| What is a field? | An area around an object where a certain effect exist. |
| What are the three parts of an electric circuit? | Source of power (battery), a device that transfers electric energy in to another form of energy (ex. light bulb) |
| A negatively charged balloon being repelled by a neutrally charge wall is an example of... | Induction |
| Electrons coming off of your hair and onto a comb or balloon is an example of... | Charging by friction |
| A negatively charge balloon sticking to a wall (Electrons being transferred from the balloon to the wall) after they touch is an example of... | Conduction |
| What is an electromagnet? | A temporary magnet that can be turned on and off that is powered by electricity |
| What is an applied force? | A force that is applied to an object by a person or another object. |
Created by:
krozwood
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