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Electricity/Magnets
| Question | Answer |
|---|---|
| What do generators do? | Convert mechanical energy into electrical energy |
| What do motors do? | Convert electrical energy to mechanical energy |
| What are examples of insulators? | Glass, cloth, rubber, paper |
| What are examples of conductors? | Metals (copper, iron, silver, gold, aluminum) |
| What is a series circuit? | A circuit where there is only one path for electrons to flow. |
| What is a parallel Circuit? | A circuit where there is more than one path for electrons to flow. |
| How can you tell if an item has an electrical motor? | It spins or moves (washing machines, blenders, ceiling fans, etc.) |
| When adding lights to a series circuit, what will happen? | The lights will get dimmer |
| When adding lights to a parallel circuit, what will happen? | The lights will stay the same brightness |
| What causes an imbalanced electrical charge? | Different numbers of protons and electrons |
| Which particle is able to move to different atoms to create imbalanced charges? | electrons |
| What could someone do to increase the power of an electromagnet? | 1. add more loops of wire 2. increase the amount of current flowing through the wire 3. increase the size of the iron core |
| Why would magnetic crystals in rocks all point in one direction? | The force of Earth's magnetic field can work over a distance |
| How could resistance be changed? | 1. change the wire thickness 2. change the wire length 3. change the material the wire is made of |
| What energy transformation is occurring in a flashlight that is battery powered? | chemical -> electrical -> radiant |
| How are electromagnets different than naturally occurring magnets? | The can be turned on and off |
| What is an open circuit? | A circuit where the components are not all connected (energy cannot flow through it) |
| What is a closed circuit? | A circuit where all of the components are connected (energy can flow through it) |
| What is a conductor? | A material that allows electrons to flow through it |
| What is an insulator? | A material that blocks the flow of electrons. |
| What is a semiconductor? | A material that allows some electrons to flow through it, but not all. |
| Define transistor | A semiconductor that amplifies signals |
| Define diode | A semiconductor that allows electricity to only flow one way |
| What causes lightning? | A build up of charged particles moving between positively and negatively charged parts of clouds |
Created by:
smorrow801
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