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Energy
Year 8 Science
| Term | Definition |
|---|---|
| What is energy? | The ability to do work or cause change, it exists in various forms |
| What is kinetic energy? | The energy and object possesses due to its motion |
| What is potential energy? | The stored energy an object has due to its position, state, or arrangement |
| The three types of potential energy | gravitation, chemical, elastical |
| What forms of energy are kinetic? | mechanical, thermal, radiant, electrical & sound |
| What forms of energy are potential? | chemical |
| What forms of energy are both? | nuclear, electrical (depends) |
| What is the Law of conservation? | It states that energy cannot be created or destroyed, only transferred or transformed from one form to another |
| Gravitational (potential) energy | The energy an object has due to its position in a gravitational field, increasing with its mass, its height, and the strength of the field |
| Elastic (potential) energy | the energy stored in an elastic object when it is deformed by stretching, compressing, or twisting |
| Chemical (potential) energy | the energy stored within the bonds of atoms and molecules, which is released or absorbed during a chemical reaction |
| Conduction | When heat is transferred by a substance flowing from a warmer area to a cooler area through direct contact between two solid objects |
| Convection | When heat is transferred by a substance flowing from a warmer area to cooler area in liquid or gases |
| Radiation | The transfer of heat from electromagnetic waves |
| Energy Transfer | the movement of energy from one form or object to another |
| Energy Transformation | the process of converting energy from one form to another |
| 5 types of stored energy | gravitational, chemical, elastic, nuclear and electrical |
| What is heat transfer? | the movement of thermal energy from a warmer area to a cooler one |
| What are two example of conduction? | frying egg and holding a hot mug |
| What are two example of convection? | Hair dryer and boiling water |
| What are two example of radiation? | the sun and microwave |
| What is the unit for energy? | joule |
Created by:
angel_123
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