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Sect2.3-2.5
Heat
| Question | Answer |
|---|---|
| What is temperature? | The average kinetic energy of the particles of a substance. |
| What is heat? | A form of energy that flows from hot objects (greater kinetic energy) to cooler object (less kinetic energy). |
| What is kinetic energy? | The energy of movement. |
| What is radiation or radiant energy? | Energy that travels in invisible waves from a source (like the sun). |
| True or False: The sun is the only source of radiant energy? | False - anything that is hot will radiate some heat energy |
| What is conduction? | Heat energy moving by particles touching/bumping into each other to transfer heat. |
| What is convection? | Currents of air being warmed, speeding up, rising up, because it is less dense, then cooling, sinking, because it is more dense, and is reheated again to continue the cycle |
| What objects absorb more energy? | dark colored and rough |
| What objects reflect more energy? | light colored and smooth |
| Wood is an example of an... | insulator |
| Metal is an example of a... | conductor |
| What do we call a substance that does conduct heat/electricity easily? | conductor |
| What do we call a substance that does not conduct heat/electricity well? | insulator |
| Making a grilled cheese sand which is an example of what type of heat transfer? | conduction |
| Boiling a pot of water to make Ramen noodles is an example of which type of heat transfer? | convection |
| Making toast is an example of which type of heat transfer? | radiation |
| The lava flowing in a Lava Lamp is an example of which type of heat transfer? | convection |
| Currents of air being heated, speeding up, rising because the current is less dense, then cooling, sinking because it is more dense, and then reheated to create a cycle is an example of which type of heat transfer? | convection |
| The transfer of energy through particles touching is called? | conduction |
| The transfer of energy moving in waves is called? | radiation |
| Using a tanning bed is an example of which type of heat transfer? | radiation |
| Ironing your shirt is an example of which type of heat transfer? | conduction |
| If heat comes out of the floor vents in my house, this situation is an example of which type of heat transfer? | convection |
| Why do baseball players wear white jerseys? | white colored objects reflect energy/heat |
| Why are most winter coats darker colours? | dark coloured objects absorb heat/energy |
Created by:
athurstontofield
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