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30 Cards in this Set
- Front
- Back
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electrical energy |
the type of energy that comes from the movement ofcharged particles |
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thermal energy |
energy that is due to the motion of particles in matter |
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mechanical energy |
the sum of the potential and kinetic energy in anobject |
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circuit |
an unbroken path of conductors through whichelectric current passes |
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electrical current |
the flow of electricity through a conductor |
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shadow |
a dark area that is created when an opaque ortranslucent object blocks the passage of light |
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solar radiation |
energy from the Sun that is used by plants to makefoo d |
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how is electrical energy related to thermal, light and mechanical energy? |
Electrical energy can be changed into thermal, light and mechanical energy |
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Thermal energy is the science name for ____ |
heat |
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An example of electrical energy |
a battery powered radio |
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an example of thermal energy |
a hair dryer |
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an example of light energy |
the sun |
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an example of mechanical energy |
a drill |
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an example of chemical energy |
a tomato |
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What do all types of energy have in common |
all types of energy can be transformed into other types of energy |
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what is electricity |
energy caused by the movement of electrons |
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when we use electricity, what serves as the path for the electricity to move though |
an unbroken path of conductors |
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how do batteries provide the energy needed to make a flashlight shine |
electrons move from the battery through the conductor to the light bulb |
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Where does light come from |
flames, the sun, and glowing filaments in light bulbs |
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What are the properties of the particles of light |
1. travels in a straight line 2. has momentum 3. hits objects |
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what is a shadow |
the absence of light in an otherwise lit area |
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When are you most likely to see a shadow |
on sunny days, when someone shines a light on an object and when you are on a well lit street |
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what are the 4 ways light interacts with matter |
1. scatter 2. absorbed 3. allowed through partially 4. allowed through almost completely |
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what is it called when light is all absorbed |
opaque |
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what is it called when light is partially allowed through |
translucent |
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what is it called when light is almost all allowed through |
transparent |
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what makes a white shirt cooler than a black shirt on a sunny day |
a white shirt absorbs less light |
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How do plants make solar energy available to other organisms |
they convert it to chemical energy |
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how does the sun's energy affect nonliving things |
1. influencing the weather and climate 2. driving the water cycle |
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why is the sun so important as an energy source |
without the thermal energy from the sun the earth would be too cold for living things to exist |
