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Science Topic 2: Human Uses of Energy
Vocabulary
22
Science
4th Grade
12/04/2022

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Term
fuel
Definition
a substance that releases energy when it burns
Term
combustion
Definition
the burning of a fuel to produce heat and light
Term
turbine
Definition
a device that contains a wheel with blades that rotate by pressure of moving water, steam, and air
Term
generator
Definition
a device that changes the energy of motion into electrical energy
Term
battery
Definition
a device that stores chemical energy that can change into electrical energy
Term
device
Definition
objects made for a specific purpose
Term
primary
Definition
first or most important
Term
fossil fuel
Definition
a substance produced by pressure and decaying organisms that is used for energy
Term
coal
Definition
a solid fossil that is burned to transfer energy
Term
petroleum
Definition
a liquid fossil fuel that can be burned to transfer energy
Term
natural gas
Definition
a fossil fuel gas that is burned for energy
Term
nuclear fuel
Definition
an energy source made from unstable elements, such as uranium
Term
uranium
Definition
an unstable element used by humans as an energy source
Term
outcome
Definition
the result of an event
Term
geothermal energy
Definition
energy created by pressure and heat underneath Earth’s crust
Term
hydropower
Definition
energy from the movement of water
Term
available
Definition
can be used
Term
emission
Definition
the release of something into the environment
Term
pollutant
Definition
a harmful substance released into the environment
Term
scrubber
Definition
a device in a power plant that reduces the amount of released pollutants sent into the air
Term
greenhouse gas
Definition
a gas that makes the atmosphere able to hold more heat, such as carbon dioxide and water vapor
Term
impact
Definition
an effect
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