What transfer of energy occurs when molecules bump into one another?

What transfer of energy occurs when molecules bump into one another?

convection
Within the troposphere, heat is transferred mostly by convection. When the air near the ground is heated, the molecules have more energy and move faster. The molecules bump into one another and move farther apart, or become less dense. Cooler, denser air sinks, forcing the warmer, less dense air to rise.

How is energy transferred from one object to another?

A common example of energy transfer is the transfer of kinetic energy—the energy of motion—from a moving object to a stationary object. Thermal energy transfers occur in three ways: conduction, convection, and radiation. Conduction is when thermal energy is transferred between molecules in contact with one another.

What happens when molecules transfer energy?

Conduction occurs when a substance is heated, particles will gain more energy, and vibrate more. These molecules then bump into nearby particles and transfer some of their energy to them. This then continues and passes the energy from the hot end down to the colder end of the substance.

Which of the following is the best example of heat transfer by convection?

Everyday Examples of Convection radiator – A radiator puts warm air out at the top and draws in cooler air at the bottom. steaming cup of hot tea – The steam you see when drinking a cup of hot tea indicates that heat is being transferred into the air. ice melting – Ice melts because heat moves to the ice from the air.

What happens when molecules bump into each other?

When two molecules bump into one another two things can happen. New and different combinations of atoms in new permutations of bonds form new and different molecules. Once reformed the new molecules move apart and travel with kinetic energy onto their next meeting. A chemical reaction has taken place.

Which of the following is the best example of convection?

Which of the following is the best example of convection?

• boiling water – When water boils, the heat passes from the burner into the pot, heating the water at the bottom.
• radiator – A radiator puts warm air out at the top and draws in cooler air at the bottom.

Which of the following is the best example of heat transfer by radiation?

Answer: A fire is another example of radiation.

Where is the energy stored in a molecule?

covalent bonds
Energy, potential energy, is stored in the covalent bonds holding atoms together in the form of molecules.

Why do molecules move?

An increase in the speed of the molecules competes with the attraction between molecules and causes molecules to move a little further apart. Cooling a liquid decreases the speed of the molecules. A decrease in the speed of the molecules allows the attractions between molecules to bring them a little closer together.

Which Colour absorbs more heat?

black colour
A black colour object absorbs all wavelengths of light and reflects none. Therefore, black colour objects will absorb more heat. Objects that are white, on the other hand, reflect all wavelengths of light and therefore absorb the least heat.

How is energy transferred from one molecule to another?

Conduction is the transfer of energy from one molecule to another by direct contact. This transfer occurs when molecules hit against each other, similar to a game of pool where one moving ball strikes another, causing the second to move.

How does the transfer of heat take place?

What is needed for heat transfer to take place is a difference in temperature between two objects. Without this difference, no heat transfer can take place. Heat can be transferred in three ways: by conduction, by convection, and by radiation. Conduction is the transfer of energy from one molecule to another by direct contact.

Which is the only type of energy transfer across empty space?

Radiation, such as the electromagnetic energy spewing from the sun (seen here at two ultraviolet wavelengths) is the only type of energy transfer that works across empty space. NASA Consider visible light, a form of radiation.

How does heat move from a liquid to a liquid?

Convection occurs when a material is free to move, such as a liquid or a gas. Again, consider a pan on the stove. Put water in the pan, then turn on the heat. As the pan gets hot, some of that heat transfers to the molecules of water sitting on the bottom of the pan via conduction.