18407249
Description
Flashcards by Laila Al-Refai, updated more than 1 year ago
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Created by Laila Al-Refai
about 5 years ago
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| Question | Answer |
| KS3 Physics Year 7 | Energy resources Electrical Circuits Forces |
| What is potential energy? | stored energy |
| What is energy measured in? | joules |
| What are fossil fuels? | fossil fuels are dead, rotting animals or plants found underground used for energy |
| What is the difference between renewable and nonrenewable energy? | Renewable energy can be reused endlessly but nonrenewable energy eventually runs out. |
| Where do all forms of energy originate? | The sun |
| What is current? | the number of electrons, measured in amps. |
| What does adding more cells to the circuit do? | increases the voltage and makes the bulb(s) brighter |
| What are the advantages of a parallel circuit? | If one cell breaks the others will still function |
| What is voltage? | The amount of energy the electrons carry. |
| What is a fuse? | a small safety tube in a circuit that slows the energy down |
| Why is gravity less on the moon? | because it is smaller in size |
| What is friction? | two surfaces rubbing against each other |
| What is air resistance? | the force opposite the direction an object is moving |
| What are lubricants? | smooth surfaces that reduce friction |
| What is the resultant force? | the difference between the amounts of force on opposite sides of something moving, if the forces on opposite sides are equal the resultant force is 0 |
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