| Energy Transformations | ||
| #1 | What does it mean for energy to transform? |
For energy to change from one type to another. |
| #2 | What transformation occurs when you plug in a lightbulb? |
Electric ----> Light |
| #3 | How does energy transform on a roller coaster? |
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| #4 | Describe the energy transformation that took place when we completed the lab 'Shake the Shot'. |
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| #5 | Describe the Law of Conservation of Energy. |
Energy cannot be created or destroyed, but it can transfer or transform. Whatever energy you have at the beginning of a transformation must be equal at the end of transformation (regardless of the energy types involved). |
| Energy Transfers | ||
| #1 | Describe how energy transfers when a hammer hits a nail. |
The energy moves from the hammer to the nail. |
| #2 | What does it mean for energy to TRANSFER? |
For energy to move from one place to another. |
| #3 | Describe how energy transfers through a circuit. |
Energy moves from the battery, through the wires, to the lightbulb. |
| #4 | How can someone transfer the most amount of energy when two objects have the same mass? |
Hold the object higher up or give it more GPE. |
| #5 | Describe how energy transfers when you hold a cold water bottle to your hot forehead. |
The energy transfers from your warm head to the cold bottle, which cools you down and heats up the water bottle. |
| Energy Generation Types | ||
| #1 | What does renewable energy mean? |
Renewable Energy is a resource that has a continuing supply, such as sunlight, water, wind, and biomass. To be considered renewable, a resource must be supplied faster than it is used up. |
| #2 | What is a non-renwable resource? |
is a resource that has a limited supply; once it is used up there is no more of it. |
| #3 | List 2 non-renewable energies. |
Fossil Fuels: coal, natural gas, and petroleum Nuclear Energy |
| #4 | List 3 renewable energies. |
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| #5 | What kind of renewable electricity generation would you suggest for a city that is near a river, sunny, and windy? Make 2 suggestions. |
NOT TIDAL (depends on tides) |
| Energy Types | ||
| #1 | Describe potential energy and give an example. |
stored energy that has not yet been used, such as energy stored in the oil in the furnace, the built-up electron charge on your clothes, or the rubber band that is fully stretched. |
| #2 | Describe kinetic energy and give an example. |
When an object is moving. A faster-moving hammer has more kinetic energy when it hits a nail than a slower one. |
| #3 | Describe Gravitational Potential Energy and give an example. |
When the potential energy is due to an object's position above the earth, such as how high a hammer is held, it is called gravitational potential energy. |
| #4 | Give 3 examples of chemical potential energy. |
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| #5 | Describe the energy transformation that takes place wiht water falling from a waterfall. |
GPE ---> kinetic, sound, thermal. |
| SURPRISE! | ||
| #1 | What is the fastest and easiest way to make your home more energy efficient? |
GET NEW LIGHTBULBS! |
| #2 | If the efficiency of a lightbulb is 9%, what does this mean? |
9% of the total energy goes to lighting the bulb, that's terrible! Bad efficiency. |
| #3 | What is conduction? Give an example of a conductor. |
is the process by which energy is transferred directly when materials touch each other. Conduction is a result of electron and atomic collisions inside the materials. Any solid, liquid or gas can transfer energy by conduction.
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| #4 | What is insulation? Give an example of a good insulator. |
Insulation: Materials that are poor conductors and slow down the rate of energy movement
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| #5 | Describe what you would do to a home's windows in sunny Florida to help keep it cooler. |
Apply a reflective film to the windows to reflect the sun's energy. |
| Final Question | |
