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Which best describes a kinetic theory?
atoms and molecules are always moving
What is the process where air cools and expands?
Adiabatic cooling - it means air is cooling without the transfer of energy in the form of heat. First remember that temperature is a measure of how fast molecules are moving, whereas heat is a form of energy which has the ability to speed up molecules. So heat is related to temperature but it is not the same. That is, temperature is a measure of speed, heat is a quantity of energy. Now as air expands, air molecules move away from each other. Since air molecules are moving away from each other they do not collide as hard. If air molecules are not colliding as hard they will slow down. And since temperature is a measure of how fast molecules are moving, the temperature goes down too (it cools). In this case, molecules are slowing down simply because they are being banged into with less force, not because there is a transfer of heat energy, and so the process is adiabatic. Note: The reason there is no transfer of heat (actually there is some, but it is negligibly small) is because air is a terrible conductor of heat.
What does chlorophyll transfer to other plant molecules?
energy
When fast moving molecules touch other molecules what is it called?
convection
Why can transfer rna be considered as a transfer molecule?
Transfer RNA are transfer molecules because they transfera string of nucleotides that give the cell information about how to make a specific trait.
What happens when fast moving molecules touch other molecules?
Heat transfer
How does heat transfer to cups?
Heat transfer to cups (or other solid objects) happens on a molecular level; fast moving hot molecules (perhaps in your hot coffee) collide with slower moving cold molecules (in your cup) and speed them up, giving up some of their own momentum.
Why does sound need a medium to transfer vibrations?
Sound means that some molecules transfer their vibrations to other molecules. So, because of this, obviously you need molecules to transfer sound.Sound means that some molecules transfer their vibrations to other molecules. So, because of this, obviously you need molecules to transfer sound.Sound means that some molecules transfer their vibrations to other molecules. So, because of this, obviously you need molecules to transfer sound.Sound means that some molecules transfer their vibrations to other molecules. So, because of this, obviously you need molecules to transfer sound.
Do you transfer temperature to an object when heating it up or do you transfer energy?
You transfer energy. The more energy a substance has in it the more quickly the molecules inside it move. When all of the molecules are moving very quickly and bouncing off of each other the friction creates heat which it then releases.
What transfer of thermal energy?
Heat being transferred from one thing to another. The rapidly moving molecules cause slower moving molecules to speed up. Running warm water over your cold hands would be an example.
What is Transfer of thermal energy?
Heat being transferred from one thing to another. The rapidly moving molecules cause slower moving molecules to speed up. Running warm water over your cold hands would be an example.
What is the basic theory of heat transfer?
Heat transfer occurs by convection, conduction and radiation. In conduction, heat is transferred through collision of rapidly moving molecules. It is only through successive collision of molecules that heat transfers through an object.
Why waves are produced in water?
When the water is disturbed, its molecules starts moving fast but do not loose their mean position and transfer this disturbance to other molecules and the waves are produced following this disturbance.
What are moving molecules?
Molecules in motion
What is the driving potential for heat transfer?
The driving potential for heat transfer is the temperature difference between two systems. Heat will naturally flow from a higher temperature to a lower temperature in order to reach thermal equilibrium.
What produces conduction?
Conduction is simply a transfer of heat. Let's say we have a hot pan and a person's hand. The molecules of the pan are moving very quickly because the temperature is so high. When a person touches the pan, he or she is really touching the very fast moving molecules of the pan that are incredibly hot.
Which best describes a kinetic theory?
atoms and molecules are always moving
