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Energy Ph. Science 4
Quiz 4 Physical Science Energy
| Question | Answer |
|---|---|
| Rearrangement of nuclei | nuclear |
| breaking apart larger nuclei | Fission |
| Smaller nuclei are put together | fusion |
| Oil, gas, coal from once living organisms; stored solar and chemical energy | Fossil Fuel |
| From an objects position , stored gravitational energy | Gravitational Potential energy |
| Associated with the motion of electric motion | Electric energy |
| Molecular bonds | Chemistry Energy |
| Sun | Radiant energy |
| Main unifying concept when talking about chemical electrical mechanical | Conservative of energy |
| We cannot ___ or ___ energy, but we can ______ it from one form to another. | create or destroy, but can change |
| Related to the kinectic and potential energies on a molecular level | Thermal energy |
| Gravitation potential energy is equal to this, | Springs, bowstrings |
| The energy an object has because of its vertical motion. | Potential energy |
| Most potential energy is due to this | gravity |
| the equation for an object at a certain height | Ep=MGH |
| Doesn't need to move to have potential energy | Potential energy |
| For a moving object | kinetic energy |
| 1/2mv^2 is the equation for what? | Change in the kinetic energy |
| Work is the process by which energy is _________ from one object to another. | transferred |
| Energy an object possesses because of its horizontal motion | Kinect energy |
| Units for work and energy | Joules |
| When energy is done on a system, the system ____________ energy | Gains |
| When work is done by a system that possess energy of the system _______ | Decreases |
| An object or system that possess energy has the ability to do work | Energy ability to work |
| From marine organism (US impacts < 50%) | oil |
| From terestrial (Land) (large reserves, environment problem) | COAL |
| From marine organisms (most produced domestically) | gas |
| Product of magintude of force(F) and the paralled distance (d) thru which the object moves | Work |
| Work mechanically involves what? | Force & Motion |
| W=Fd=Newtonxmeter=Nm= Joules (J) | SI system |
| W=Fd=poundxfoot= foot pound (ft-lb) | British System |
| Not aesthetic must be located where the wind is sufficiently constant and fast enough. Has minor effects on environment , and has been used for thousand of years to grind grains and pump water | Wind Power |
| Very site specific , and depends on a large natural change in temperature being present and accessible | Geothermal Energy |
| Uses the gravitational potential energy of water flowing downhill due to gravity. Best dam where large amounts of water can be stored in narrow deep canyons, have been taken. Problem is environmental and ecological damage and loss of agricultural land | Hydropower |
| Burning, solid form of water and large amount of methane. | Methane Hydrate |
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