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What happend when a convection current detector came near a heat source?
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Why cant convection happen in solids?
Convection is the transfer of heat via the movement of warmer material nearest a source of heat toward colder regions, while colder material moves toward the heat source. Usually, the warmer material moves upward from the heat source (since "heat rises") and then is pushed outward toward colder regions, setting up a circulating current that pushes the colder material sinks downward and toward the heat source. Unlike conduction (where heat is transferred by direct contact with the heat source) or radiation (where the heat source sends out waves of heat), convection requires a circulating "current" -- where material moves or flows within a fluid, such as a liquid or gas. This flow is not possible within a solid -- where the material inside cannot move from place to place. Convection cannot occur in a vacuum, either, since there is no material to flow from one place to another.
When the heat source is removed from a fluid convection occurring in the fluid will do what?
Eventually stop
What is convection transfered through?
Convection is heat transfer by mass motion of a fluid such as air or water when the heated fluid is caused to move away from the source of heat, carrying energy with it.
Does it matter if aluminum absorbers are near a Geiger-Muller detector when you have a radioactive source of beta particles?
It does if you want to detect the beta radiation. Beta radiation, beta particles, can be stopped with a sheet of aluminum foil. An aluminum "absorber" would act as a shield to the Geiger-Müller (GM) detector and stop the beta radiation, which is really high energy electrons or possibly positrons. Placing a shield between the source of the beta radiation and the GM detector would block the radiation, thus shielding the detector from it. The detector would be "blind" to the radiation. Note that this would be effective if all you wanted to do was look at gamma rays. The gamma rays and the beta radiation would leave the source and head to the GM detector, the beta particles would be blocked by the aluminum, and only the gamma rays would make it to the GM tube to be counted. Links can be found below.
What is called when the movement of energy through a body of water?
The movement of energy through a fluid by the movement of its molecules is known as convection. To observe convection place a heat source by a glass of liquid and observe the changes in temperature inside the liquid from convection.
Is the heat source for the convection current in the mantle in the sun?
The difference in temperature and density is the cause of convection currents in the earths mantle. Convection currents are the flow that transfers heat within a fluid.
What is the heat source driving the convection current in earth's mantle?
Radioactive decay - mainly of potassium.
Why the Americium is used in smoke detectors?
In the smoke detector, the fast - moving alpha particles enable the air to conduct an electric current. As long as the electric current is flowing, the smoke detector is silent. The alarm is triggered when the flow of electric current is interrupted by smoke entering the detector.
What are the differences between proportional counter and gm counters in radiation monitoring?
The proportional counter is operating in linear mode, so the energy pulse measured by the detector is proportional to the energy of the radioactive particle. Thus, the average current flow in the detector is a function of both the activity (curies) and the energy (kEv) of the source. This detector is better at measuring the dose rate of the source. The Geiger-Muller detector, on the other hand, operates in avalanche mode, so the energy pulse measured by the detector is not proportional to the energy of the radioactive particle. Thus, the average current flow in the detector is a function of only the activity (curies) of the source. This detector is better at measuring the activity of the source, and can be more sensitive to lower energy particles, at the loss of discrimination of what those particles are.
Is there warmer air in a convection current?
A convection current in air will have warmer air near to the heat source and this will rise. Then it gradually loses heat to the surroundings and sinks again, so there is warmer air in parts of the current and cooler air in other parts.
How does energy from heat transfer from a hot source to a cold source?
Convection
What is the major source of energy that powers the convection currents in the atmospheres and oceans?
Vertical convection in both the ocean and atmosphere is caused by uneven HEATing.The source of energy for convection in the ocean and atmosphere is heating from the sun.
What is Major source of energy that powers the convection currents in the atmosphere and ocean?
Vertical convection in both the ocean and atmosphere is caused by uneven HEATing.The source of energy for convection in the ocean and atmosphere is heating from the sun.
What does it mean to source current?
the source current is the current that flows from the power source.
What is the main source of convection in the atmosphere and the oceans?
The Sun is the main source of energy for convection in the atmosphere and the oceans. The Sun, heat radiated form the Sun is the main source of energy driving convection in the atmosphere and oceans. There is also a small input form geothermal energy.
What is the main source of energy for convection in atmosphere and the ocean?
The Sun is the main source of energy for convection in the atmosphere and the oceans. The Sun, heat radiated form the Sun is the main source of energy driving convection in the atmosphere and oceans. There is also a small input form geothermal energy.
What is the the main source of energy for convection in the atmosphere and the oceans?
The Sun is the main source of energy for convection in the atmosphere and the oceans. The Sun, heat radiated form the Sun is the main source of energy driving convection in the atmosphere and oceans. There is also a small input form geothermal energy.
