Energy Vocabulary
Energy Efficiency at Home
Potential or Kinetic?
Electrical Energy Generation
Lab
100
What is the definition of ENERGY?
Energy: The ability to do work
100
Explain how INSULATION saves energy
Insulation is fiber padding or spray that is placed between walls. In the summer it keeps a home cool, and in winter it keeps a home warm.
100
EXAMPLE: Rolling a boulder up a mountain
Potential Energy
100
This type of electrical energy generation helps us get rid of paper, wood, and even garbage
Biomass is the burning of organic matter to generate electricity
100
A hypothesis is always written in this form...
"If...then...because" format
200
Define the Law of Conservation of Energy: "________ can neither be __________ nor ____________, instead, it is _____________."
"ENERGY can neither be CREATED nor DESTROYED, instead, it is TRANSFORMED (or TRANSFERRED)"
200
What are dual-pane windows and how do they help conserve energy?
Dual or triple pane windows are windows with two or three layers of glass with either air or argon in between them. This air or gas acts as an insulator to prevent energy transfer.
200
Holding a basketball over your head before you let it bounce
Potential Energy
200
This nonrenewable source does not produce air pollution, but is only about 35% efficient.
Nuclear Energy
200
Name two things your materials section MUST include...
Quantity and tools used
300
Define EFFICIENCY
The ratio of energy released to total energy absorbed in a process. EXAMPLE: Gasoline in a car loses 74% of its energy to heat, and 26% is actually transformed into kinetic energy to move the engine. Therefore the efficiency is 26%
300
Name two PROS and one CON about fluorescent lightbulbs
PROS: Use about one-third of the energy of a typical light bulb, they do not get as hot as other bulbs and are therefore safer CONS: More expensive (but save money over time)
300
A Rollercoaster rolling downhill
Kinetic Energy
300
This source accounts for 51% of the US electrical sources in 2005
Coal
300
In which section do you accept or reject your hypothesis?
Conclusion
400
Define CONDUCTION
The process by which energy is transferred directly when materials TOUCH each other.
400
Explain the difference between "tankless" water heaters and traditional water heaters.
A traditional water heater constantly heats up water so hot water is ready all the time. "Tankless" water heaters, however, only heat water when needed, which means you have to run the water for a long time before the hot water comes out.
400
What is the difference between Gravitational Potential Energy and Potential Energy
Potential energy is any type of stored energy, such as elastic potential or chemical potential energy. Gravitational potential energy is stored energy due to an object's placement and the pull of gravity, such as a roller coaster at the top of a hill or a brick on the edge of a table.
400
This renewable source is not used in the United States, but at 90%, it is the most efficient type of electrical energy generation
Tidal Harness
400
Name TWO variables that may have affected your results in the Ice-Melting Contest (Lab)
- Ice started to melt (can be caused by different variables) - More/Less time - Graduated cylinder too large to measure small amounts of water - other variables will also be accepted!
500
Define INSULATOR
A material that is a poor conductor and therefore slow down the rate of energy movement
500
What is the name for appliances that use energy more efficiently than other appliances?
Energy Star appliances
500
Stretching a rubber band
ELASTIC potential energy
500
How does gravitational potential and kinetic energy help a hydroelectric plant produce electricity?
The gravitational potential energy at the top of a waterfall or dam transforms into kinetic energy. While doing this, the water turns a turbine inside the dam, which creates electricity.
500
In the following list, which section is missing from a formal lab report? - Title - Objective/Purpose - Hypothesis - Materials - Procedure/Method - Analysis - Conclusion
- Data/Observations
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