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heat and energy
Question | Answer |
---|---|
What is conduction? | two solids rubbing together |
Where can you find warm air in your home in the winter? | on the ceiling |
Does warm air rise or fall? | rise |
If you pack ice cubes around a bowl of Jello or brand a cow, what is that an example of? | conduction |
What type of heat do we get from the sun? | radiation |
Heat is ________________ through space when it travels from the sun to the earth. | radiated |
Where does the earth get heat from? | the sun |
A metal cup heating up when hot water is poured into it is an example of ____________. | heat conduction |
Boiling water is an example of ________________. | heat covection |
The poorest insulator is the __________________. | coldest material used |
Which one is the poorest insulator, steel wool or newspaper? Why? | steel wool because it is the coldest material |
What insulators are the best? | the warmest in minutes |
Is newspaper or popcorn a better insulator? | newspaper |
What are six forms of energy? | 1. chemical 2. electromagnetic 3. mechanical 4. nuclear 5. thermal 6. radiant |
What is radiation? | rubbing one surface against another |
What are the two states of energy? | potential and kinetic |
What is potential energy? | energy at rest |
What is kinetic energy? | energy in motion |
What is radiation? | transfer of energy by electromagnetic waves |
What kind of energy is a blacksmith feeling heat from his forge? | radiation |
What kind of energy goes through empty space? | radiation |
What kind of energy is used when a marshmallow gets browned when it is held above the fire? | radiation |
What is convection? | movement that transfers within fluids |
What are two examples of convection? | gas and water |