Term
| Is a wood-burning stove more efficient? Why or why not? |
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Definition
| No, a wood burning fireplace is less efficient than a gas one. Wood-burning fireplaces take the warm air from a room and some escapes through the chimney. Gas fireplaces use energy efficiency, putting warm air back into the room. |
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Term
| Name 2 traditional structures |
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Definition
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Term
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Definition
| A very precise scientific thermometer that can measure extreme temperatures. |
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Term
| Who is Anders Celsius and how did he make his temperature scale? |
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Definition
| Anders Celsius created Celsius. He measured boiling point of water (100'C) and freezing point of water (-0'C) |
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Term
| Does water boil faster at sea level or at a higher elevation? |
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Definition
| Water boils faster at a higher elevation |
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Term
| Where could you find a bimetallic strip? |
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Definition
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Term
| Where could you find a thermocouple? |
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Definition
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Term
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Definition
| An electric wave being emitted or recieved |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| Hot energy made by friction etc. |
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Term
| What are three important parts of the particle model and the fourth less important one |
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Definition
| Everything is made of tiny particles we can't see. The particles are always moving, vibrating, rotating, and in gases and liquids moving from place to place. The particles are not squished together, they have space between them. |
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Term
| Two features of energy are |
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Definition
| When there is a difference of energy change happens. Energy systems have high-energy sources that create change. Energy always travels from high to low-energy. |
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Term
| What unit do you measure Energy in? |
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Definition
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Term
| What is the Law of Conservation of Energy? |
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Definition
| Energy can not be created or destroyed only transferred to different things |
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Term
| What are three states of matter? |
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Definition
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Term
| What happens to the volume of objects as they are cooled and warmed? |
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Definition
| When cooled things contract when warmed things expand. |
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Term
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Definition
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Term
| What is evaporative cooling? |
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Definition
| Fats moving particles on top of a drop of water escape and turn to gas and slower moving particles cool down |
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Term
| Define heat capacity and specific heat capacity |
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Definition
| Heat capacity is the amount of heat needed to change the temp of a thing by 1'C Specific heat capacity is the amount of heat needed to change the temp of a 1 gram thing by 1'C |
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Term
| What are six changes of state? |
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Definition
| Fusion, Solidification, Evaporation, Condensation, Sublimationx2 |
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Term
| Why do you have to undress in you fall into a cold body of water? |
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Definition
| Water will take your energy and make you more cold. |
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Term
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Definition
| Transfer of energy without movement |
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Definition
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Term
| Define thermal conduction |
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Definition
| Transfer of energy with direct contact |
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Term
| What does EMR stand for and what is it? |
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Definition
Electric Magnetic Radiation.
It is energy transferred without direct contact |
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Term
| What three characteristics do radiant energies have? |
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Definition
They behave like waves.
They can be absorbed and reflected by objects.
They travel across empty space at the same very high speed: 300 000 km/s. |
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Term
| Define energy source and list 4 |
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Definition
Where the energy COMES FROMS
Mechanical, Chemical, Nuclear, Electrical |
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Term
| What are 5 features of energy transfer systems? |
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Definition
Energy Source - The energy source can be mechanical, chemical, nuclear or electrical. It is where the energy
comes from that can be transferred through the energy system
Direction of Energy Transfer - Energy transfers away from concentrated sources. Non living systems spread the
energy evenly if a change happens.
Transformations - When transferred, energy can change its form
Waste Heat - Some energy can be lost to surroundings, but almost all is transferred directly to particles
Control Systems - A device that can stop or start the transferring of energy |
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Term
Define these 5 energy sources
chemical energy
electrical energy
geothermal energy
solar energy
wind energy |
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Definition
CE- energy
EE-
GTE- energy from the earth
SE- energy from the sun
WE- energy from the wind |
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Term
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Definition
| Waste heat or energy is used by multiple industries |
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Term
| What is the difference between active and passive solar heating |
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Definition
active- you are doing something to create solar energy (a pump or fan)
passive- you are not doing anything but still gaining solar energy (laying out in the sun) |
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Term
| What are two disadvantages to fossil fuels? |
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Definition
We do not have many left
They create greenhouse gases causing the greenhouse effect. |
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Term
| What is the greenhouse effect and why is it a problem? |
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Definition
| Gases such as carbon are released, there are too many for trees to use and they trap energy inside the earth atmosphere making it much hotter (global warming) |
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