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Heat
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Which process transfers thermal energy by contact?
This proess is called conduction. The other processes are convection and radiation. Convection is the transfer of energy through movement, such as boiling water. Radiation is the transfer of thermal energy through a medium or space, such as the sun heating the earth.
Describe the role of energy when ice melts and when vapor condences to form liquid water?
When water molecules melt, energy is absorbed. When water molecules evaporate, energy is also absorbed. When water molecules condense energy is released. When water molecules freeze energy is also released.
What has lack of particle density and little thermal energy transfers?
stratosphere
Useful and non-useful energy transfers for coal?
Useful: Energy Light Sound Non-Useful: Electricity C02
What happens when you mix ice water and saturated water?
Saturated water is water that's passed its boiling point yet hasn't evaporated yet. When putting ice water within this boiling-hot water, the heat energy from the boiling water transfers rapidly into the ice water, mixing the two and rapidly changing temperatures.
How does hydropower transformed?
The potential energy of the falling down water transfers to kinetic energy. The kinetic energy turns turbines that are connected to electric generators where the kinetic energy transfers into electric energy.
What energy transfers or changes happen when using an immersion heater to warm water?
electrical energy is converted in the heatert to heat energy to warm the water
Does water require energy?
If you take energy in the form of heat, from water it will freeze and so is not water any more.
Why does hot water freeze faster that cold water?
Kinetic energy
What energy transfers generate electricity in the dam's staction?
The water's potential energy is converted into mechanical energy (movement); this is then converted to electricity.
Why should the energy be removed to freeze water?
Ice at 0°C has less energy than water at 0°C. This has to do with the forces between molecules - in other words, there is potential energy involved. To freeze the water, this excess energy has to go somewhere - ergo, it has to be removed.
What is the process of the water cycle from the moment the sun transfers its energy?
The process of evaporation begins after it. it will turn water into water vapour.
What is transferred on a wave?
Many things travel in waves: light, energy, water, and sound.
What poorly transfers in thermal energy?
Thermal energy poorly and slowly transfers in liquids
What a wave transfers?
energy.
What is the energy transfer in an electric cooker?
in the cooker energy transfers that goes in is electric energy, transfers that go out are heat and light energy
What is the simple machine propels the boat in the water that transfers energy from the rower to the oar?
wheel and axle
