1089455
Description
Flashcards by shenaii matlock, updated more than 1 year ago
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Created by shenaii matlock
over 10 years ago
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| Question | Answer |
| Define Energy | energy is the ability to do work |
| Define Energy transformation | energy changing from one form to another Example: Electricity to light on a lamp |
| State and explain the law of conservation of energy | Energy cant be created or destroyed. It can only be changed from one form to another |
| List several types of energy | Light, sound, heat, electrical, chemical, potential, kinetic, nuclear, spring |
| light | Comes from fast moving charges. eg. electrical to light |
| Sound | Particles that vibrate back and forth |
| Heat | Can come from a fire or sun etc |
| Electrical | Can be changed to light heat and sound |
| Chemical | Food contains chemical energy which is broken down and converted to kinetic energy as we move. |
| Potential | The energy of any object that is raised or has a chance that it will move in some way |
| Kinetic | Any moving object has kinetic energy. The faster it goes the more kinetic energy it has. |
| Nuclear | Energy stored in the nucleus of an atom from fission or fusion |
| Spring | A spring stores energy in till it is realized |
| Identify objects that create different forms of energy | eg. the sun makes light and heat A heater makes heat and light a bell makes sound |
| Identify energy transformations in a simple electrical circuit. | eg. electricity to heat |
| Explain the differences of heat and temp | Temperature is in oC and heat is measured in heat Joules |
| Whats the different between heated particles and cold particles | Cold partials move really slow and heated partials move very fast |
| Define the term conductor, and identify examples. | lets the energy flow from one thing to another eg copper |
| Define the term insulator, and identify examples. | Is an object that dosen't let energy flow through it eg plastic |
| Identify whether solids, liquids or gases conduct heat well. | solids conduct heat best Liquids poorly conduct Gases are very bad conductors |
| Explain changes of phase in relation to the Particle Theory of Matter. | the partial theory is where a peace of ice is getting heated and the partials start vibrating faster and faster in till it terns into a liquid and if you keep on heating it boils and terns into a gas |
| Explain why the temperature of a substance does not increase as it is boiling, melting or subliming | Heat energy is used as the particles jump out of the liquid. You can keep on heating boiling water but it cant get any hotter. |
| Define the terms conduction, convection and radiation. Explain the properties of each, and identify examples | Conduction is where heat travails through a solid. Convection is where heat travels through a liquid and Radiation is where it travels through a gas |
| Describe how heat can be controlled using conductors and insulators. | Insulation in roof to keep heat in Conductor is the element on the stove to collect the heat |
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