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Science Quiz 3/21
| 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 |
Created by:
17brivero
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