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FORMS OF ENERGY
Nat Geo Science Energy: Chapter 7
| Term | Definition |
|---|---|
| Potential energy | stored energy |
| Kinetic energy | the energy of motion |
| Mechanical energy | an object's potential energy plus kinetic energy combined |
| Chemical energy | energy that is stored in substances, a form of potential energy |
| Energy | the ability to do work or to cause a change in matter. |
| Law of Conservation of Energy | energy cannot be created or destroyed |
| Sound energy | Energy you hear caused by vibrations that travel in waves through matter |
| Vibration | a back-and-forth motion of matter, movement causes vibrations |
| Volume | loudness of the sound |
| Pitch | describes how low or high a sound is |
| Frequency | number of vibrations per second. High frequency equals high pitch, low frequency equals low pitch |
| Reflection of Sound | sounds waves bouncing off of surfaces |
| Echoes | reflected sound waves |
| Absorption of Sound | sound waves going into materials |
| Decibels | units used to measure sound (dB) Above 100 can cause pain & damage ear. |
| Reflection of Light | light waves bouncing off objects |
| Refraction of Light | light waves bend, or refracts, when it passes from one material to another because the speed of light changes. |
| Temperature | the measure of how hot or cold an object is. |
| Heat Energy | the energy of moving particles |
| Energy Transfer | the movement of energy from one place or object to another |
| Energy Transformation | change of energy from one form of energy to another |
| Solar energy | energy from the sun in the form of heat and light. Radiant energy |
| Light Energy | energy we see |
| Heat | the transfer of thermal energy between objects with different temperatures |
| Conduction | transfer of thermal energy from one object directly into another (two objects in contact -touch) |
| Convection | transfer of thermal energy through the movement of a gas or liquid (heat rises) |
| Radiation | transfer of energy by waves that move through matter and space (sun), does not need matter to travel |
| Conductor | anything that allows thermal energy to move through it easily |
| Insulator | anything that slows the movement of thermal energy |
Created by:
dabb
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