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26 Cards in this Set
- Front
- Back
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What is the Law of Conservation of Energy? |
Energy cannot be created or destroyed |
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Potential Energy |
Energy stored within an object, not being used |
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Kinetic Energy |
Energy of motion |
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Mechanical Energy |
Sum of potential and kinetic energy in a system |
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Radiant Energy |
energy of electromagnetic waves |
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Thermal Energy |
portion of internal energy responsible for temeprature |
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Electrical Energy |
energy available to move charges through an electrical circuit |
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Chemical Energy |
energy stored within bonds of atoms and molecules, also nuclear energy |
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What is electromagnetic radiation? |
Energy that travels through the movement of electrical and magnetic waves |
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Is electromagnetic radiation a wave or particle? |
both |
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What is the relationship between wavelength and frequency? |
As wavelength increase, frequency decreases |
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Radio Waves |
used for communication, radio and cell phone, lowest energy, no danger |
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Microwaves |
used for communication, cooking, killing tumors, can cause thermal damage |
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Infrared Light |
used to provide heat to warm food, injury therapy, some IR waves can burn |
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Visible light |
produces all light and colors we see, no damage |
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Ultraviolet light |
make clothes, blood, bodily fluids glow, and to sterilize, can cause damage that leads to cancer |
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X-rays |
used for medical imaging, scanning luggage, too much exposure can cause DNA mutations and cancer |
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Gamma Rays |
used to kill bacteria and tumors, can cause cell death, DNA mutations, and cancer |
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How is light produced? |
By passing energy through an atom, and being absorbed by electrons (electrons get excited, calm down, move back down a level, release light) |
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How do catalysts work? |
The lower the activation energy required to get a reaction moving |
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What are the four fundamental forces? |
gravity, electromagnetism, strong nuclear force, weak nuclear force |
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Gravity |
attractive force felt between two objects |
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Electromagnetism |
attraction and repulsion between charged particles and magnets |
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Strong Nuclear Force |
Strongest of four forces, holds together nucleus of an atom |
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Weak Nuclear Force |
short ranged and responsible for atom decay |
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What is the unification of electromagnetism and weak nuclear force? |
Electroweak force |
