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6.4 Unit Test Review

6.4 Energy Unit Test Review

QuestionAnswer
Name the energy transformation when someone eats and then runs a race. Chemical energy changes to mechanical energy
Name the energy transformation when a gas-powered car drives down the road. Chemical energy changes to mechanical energy
In a coal burning electrical power plant, when is there mechanical energy transforming to electrical energy? When the steam turns the turbine which then turns the generator causing electrons to flow which is electricity.
In a coal burning electrical power plant, when is there radiant energy transforming to chemical energy? When the sun's energy allowed plants and animals to thrive millions of years ago eventually forming coal.
In a coal burning electrical power plant, when is there chemical energy transforming to thermal energy? When coal is used for fuel as the heat source.
Food is what type of energy? Chemical
A bike being ridden is what type of energy? Mechanical
A generator is producing what type of energy? Electrical
A fan turning is what type of energy? Mechanical
Solar panels use what type of energy converting it to what type of energy? Radiant energy to electrical energy
Radiation we cannot see but we can feel as heat is what type of radiation? Infrared radiation
Radiation you can see from the sun is what type of radiation? Visible light radiation
Radiation that can harm skin cells/life is what type of energy? Ultraviolet radiation
Energy from the sun is made up of what three types of energy? Visible light, infrared, and ultraviolet
A wind turbine, solar panels, photosynthesis, hydroelectric power, radiant heat ...all use what as their energy source? The sun is their source of energy
How is wind formed? The sun heats Earth's surface unevenly causing the movement of air.
_________________ uses the interior of Earth as it's energy source. Geothermal energy
Earth's energy budget refers to... How much solar energy is entering and exiting Earth's atmosphere AND whether the amount of solar energy entering balances with the amount exiting.
How much of the sun's solar radiation is reflected into space? About 30%
What do greenhouse gases do? Greenhouse gases hold heat energy allowing for a comfortable temperature on Earth. If we add more greenhouse gases to the atmosphere, the Earth's energy budget would become unbalanced.
Greenhouse gases at increased levels cause what to melt? Polar ice caps and glaciers
When air or water has a rising and falling effect due to warming and cooling, this transfer of heat energy is called? Convection
The energy coming from the sun which travels in waves and does not need matter to travel, heats the surface of Earth. What type of energy is this? Radiation
Air molecules warm from touching earth's surface transferring heat to other air molecules. This is an example of what type of heat transfer? Conduction
True or false: Cold water molecules sink because they are more dense and have less energy. True
Created by: Johnsopd
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