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Unit 4 Thermodynamic
Heat and Energy - modified
| Question | Answer |
|---|---|
| Kinetic energy is a property of a moving object or particle and depends not only on its motion but also on its mass. | Kinetic Energy |
| sum of the kinetic energy, or energy of motion, and the potential energy, or energy stored in a system by reason of the position of its parts. | Mechanical Energy |
| Energy stored by position such as a boulder on top of a hill ready to fall | Potential Energy |
| Energy can be neither created nor destroyed | Conservation of Energy |
| A pendulum is a body suspended from a fixed point so that it can swing back and forth under the influence of gravity. | Pendulum |
| 1 complete swing of a pendulum, forward and back. | Period |
| heated by touch | conduction |
| heated by circling temperatures | convection |
| heat coming off an object that is not being touched | radiation |
| Heat is the form of energy that is transferred between systems or objects with different temperatures (flowing from the high-temperature system to the low-temperature system). Also referred to as heat energy or thermal energy. Btu, calories or joules. | heat |
| passing energy along from 1 source to another | Energy Transfer |
| solid liquid gas | phases of matter |
| a measurement of how fast molecules are moving | temperature |
| temperature | speed of molecules and electrons |
| laser cooled to within a hair of absolute zero. When they reach that temperature the atoms are hardly moving relative to each other; they have almost no free energy to do so. | Bose Einstein Solid |
| Like the sun, medium in which there are roughly equal numbers of positively and negatively charged particles, produced when the atoms in a gas become ionized. SUPER HOT! | Plasma |
| The temperature at which a substance has no kinetic energy per particle (thermal) to give up. This temperature corresponds to 0 K, or to -273 degrees C. | Absolute Zero |
| The study of heat and its transformation to mechanical energy. | thermodynamics |
| A measure of the amount of disorder in a system. | entropy |
| a physical system that does not allow transfer of matter in or out of the system. Nothing in, nothing out | closed system |
| system in which mass or energy can be lost to or gained from the environment through transfer. It does not violate the Law of Conservation of Energy | open system |
| What are the types of energy in our World? | SMENCH |
| Moving bike, KE or PE? | KE |
| Bolder on the top of a hill, KE or PE? | PE |
| Food, KE or PE? | PE |
| Blowing wind, KE or PE? | KE |
| What 2 things make up all of the ME- Mechanical Energy in a system? | KE + PE = ME |
Created by:
NJHS Physical Science
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