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Science
| Question | Answer |
|---|---|
| Energy | The ability to do work or cause change |
| Kinetic energy | The energy of motion |
| Example of kinetic energy | A bowling ball |
| Potential energy | Energy that is stored and held in readiness |
| Example of potential energy | A bow pulled back and ready to shoot an arrow |
| Examples of mechanical energy | Wind, a bowling ball, a frog jumping |
| Examples of electrical energy | The energy carried by power lines |
| Examples of electromagnetic energy | Light waves, Ultraviolet waves, microwaves |
| Examples of chemical energy | Sugar that we eat for energy, gasoline, wood to make a fire |
| Examples of thermal energy | The energy that makes water boil, the energy that melts ice cream |
| Examples of nuclear energy | Energy in the sun |
| What happens to water (liquid) that gains energy? | The water evaporates (changes from liquid to a gas) |
| What happens to water vapor (gas) that loses energy? | The water condenses (changes from a gas to a liquid) and may eventually freeze (change from a liquid to a solid) |
| Describe what happens when cold water is on top of warm water. | The warm water will rise and the cold water will sink because the warm water is less dense. This will cause the water to become mixed, with an even temperature. |
| Describe what happens when warm water is on top of cold water. | The cold water will remain on the bottom because it is more dense and the warm water will remain floating on top because it is less dense. |
| Describe what happens when salt water is on top of fresh water. | The salt water is more dense than fresh water, so the salt water sinks. |
| Describe what happens when fresh water is on top of salt water. | The fresh water is less dense than the salt water so it “floats” or remains on top of the salt water. |
| Describe what drives deep water currents. | Different densities – cold water at the poles sinks, pushing deep water around. |
| Describe what drives surface water currents. | Winds |
| What form of energy do we get from the sun? | Electromagnetic |
| Wind | The horizontal movement of air from areas of high pressure to areas of low pressure. |
| Which is denser, cold air or warm air? | Cold air |
| Which has greater pressure, cold air or warm air? | Cold air |
| Tornado | A narrow, violently rotating column of air that extends from the base of a cloud to the ground. |
| ist 5 conditions under which it is likely a tornado will form (time, place, or weather phenomena). | -Spring or Summer -Late afternoon -After a thunderstorm -In Tornado Alley (mid west/Southern US -Where cold dry and warm moist air meet |
Created by:
17cdelquaglio
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