Term | Definition |
Energy | the ability to do work or cause change |
Kinetic Energy | the energy of motion |
Example of Kinetic Energy | bowling ball
wind pushing a windmill |
Potential Energy | energy that is stored and held in rediness |
Example of Potential Energy | a ball at the top of a hill
a bow pulled back and ready to shoot |
List the Six Forms of Enerygy | Thermal
Electrical
Electromagnetic
Nuclear
Chemical
Mechanical |
Example of Thermal Energy | wood to make a fire |
Example of Electrical Energy | energy carried by powerlines |
Example of Electromagnetic Energy | microwave |
Example of Chemical Energy | gluecose and gasoline |
Example of Nuclear Energy | energy in the sun |
Example of Mechanical Energy | wind and bowling ball |
What is the path of energy from the sun to a lightbulb? | Nuclear to Electromagnetic (in sun)
Electromagnetic to Thermal (in atmosphere)
Thermal to Mechanical (wind moves)
Mechanical to Electrical (in wind turbine)
Electrical to Electromagnetic (in light bulb) |
What happens to water that gains energy? | It evaporates |
What happens to water vapor that loses energy? | It condenses and may freeze |
What happens when cold water is on top of warm water? | The warm water will rise because it is less dense and the cold water will sink. This will cause the water to mix and be a even temperature. |
Describe what happens when salt water is ontop of fresh water. | Salt water will sink because it is more dense. |
Describe what happens when fresh water is ontop of salt water. | Fresh water is less dense so it stays on the surface or "floats". |
What drives deep water currents? | Different densities |
What drives surface currents? | Winds |
What form of energy do we get from the sun? | Electromagnetic |
What type of heat transfers take place from the sun to our atmosphere? | The suns energy heats the ground (radiation)
The air molecules touching the ground are heated (conduction)
The warm air molecules move up and around, heating the atmosphere (convection) |
Wind | Horizontal movement of air from areas of high pressure to low pressure. |
Is cold air or warm air denser? | Cold air |
Does cold air or warm air have greater pressure | Cold air |
Which way will the wind blow?
Ocean= 22 degrees
Land= 28 degrees | From the ocean to the land (sea breeze) |
Tornadoe | a narrow, violently rotating column of air that extends from the base of a cloud to the ground |
What are 5 likely tornado conditions? | sping or summer
late afternoon
after tunderstorm
in tornado alley
where cold dry and warm moist air meet |