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On what principle do most thermometers work A when liquid absorbs heat it loses kinetic energy B as the temperature rises the molecules in liquid move more slowly C kinetic energy causes temperatur?
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∙ 14y ago
On what principle do most thermometers work?
As the temperature of the liquid in the thermometer gets hotter, the molecules move faster. As the molecules move faster, they produce greater pressure. The only free surface is the top. This greater pressure causes the liquid to expand, causing the liquid to rise in the thermometer.
A. When liquid absorbs heat it loses kinetic energy.
Kinetic energy = ½ * mass * velocity^2
When a liquid absorbs heat, the molecules move faster. Kinetic energy is proportional to the square of velocity of the molecules. So, since the molecules are moving faster, the liquid gains KE.
B As the temperature rises, the molecules in liquid move more slowly.
Temperature is the measure of the average Kinetic energy of the molecules of a substance. Let's determine what causes the temperature to rise. Suppose you half fill a small metal can with 50º F water, and place it in a pan with 120ºF water in it. The molecules of the 120ºF water are moving very fast. They collide with the atoms in the outer surface of metal can, making these atoms vibrate faster. As these atoms vibrate faster, hitting the atoms in the inside of the metal can harder, the atoms inside vibrate faster. These atoms in the inside of the metal can hit the molecules of the 50º F water, making these water molecules move faster. Since the water molecules of the 50º F water are now moving faster (greater velocity), they have more kinetic energy. So, the temperature of the water in the can is getting warmer. It is a chain reaction.
C kinetic energy causes temperature?
Temperature measures the kinetic energy.
Kinetic energy = ½ * mass * velocity^2
Kinetic energy measures the mass and velocity of atoms and molecules.
When the atoms are moving faster the temperature is higher.
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∙ 14y ago
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On what principal do most thermometer work?
Most thermometers work on the principle that elements and compounds expand as their temperature increases. Liquids or solids that expand at a constant rate over the desired temperature range are used so that the amount they have expanded can be measured and compared against known expansion rates to determine the temperature.
What physical principle explains the upward movement of water in a plant?
Principle of cohesion force among water molecules
What are the advantages of the Galileo thermometer?
The Galileo thermometer, or thermoscope, is a device named after the Italian physicist Galileo Galilei and designed to measure temperatures with a relatively good accuracy, although today it is mostly used as a decoration item. Unlike most classical thermometers, the Galileo thermoscope relies on the buoyancy principle, and on the fact that the buoyancy of objects floating inside a liquid depends on the density of the latter, thus on the temperature of the medium.
What stressors will affect the value for Keq according to Le Chatelier's principle?
Temperature
What is the main principal of autoclave?
steriling the acessories by introducing saturated steam with required pressure high temperature under the influence if high pressure that is 121 degree celsius temp and 15 ATM pressure.
How do thermometers works?
For a basic design of thermometers would base on the principle of thermal expansion, either using air in syringe expand and contract with temperature to indicate the scale or using liquid filled into capillary and mark the scale according to a standard thermometer.
How do handmade thermometers work?
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What principle do most thermometers work?
Liquid expands as it gets warmer.
What does the principle of the wet-bulb and dry-bulb thermometers state?
Evaporation causes cooling.
Why does the temperature of an object rises when it is heated?
Temperature is the measure of heat in a body, as measured by the motion of its molecules. As you are providing heat energy to the body, the molecules of the body gain kinetic energy (due to the principle of conservation of heat). Hence the temperature increases unless it is transferred or radiated elsewhere.
Why does temperature of an object rise when its is heated?
Temperature is the measure of heat in a body, as measured by the motion of its molecules. As you are providing heat energy to the body, the molecules of the body gain kinetic energy (due to the principle of conservation of heat). Hence the temperature increases unless it is transferred or radiated elsewhere.
How does a thermometer tell the temperature?
Bulb thermometers rely on the simple principle that a liquid changes its volume relative to its temperature. Liquids take up less space when they are cold and more space when they are warm (this same principal works for gases and is the basis of the hot air balloon.
What is Avogadros hypothesis?
the principle that equal volumes of all gases and vapors, under the same conditions of temperature and pressure, contain identical number of molecules.
What is Avogardros hypothesis?
Avogadro's law: the principle that equal volumes of all gases (given the same temperature and pressure) contain equal numbers of molecules
What does Avogadro's principle state?
Equal volumes of gasses (at equal temperatures and pressures) have the same number of molecules.
What is the principle of Mercury?
Mercury thermometers are based on the fact that materials (in this case, the liquid mercury) expand when heated.Mercury thermometers are based on the fact that materials (in this case, the liquid mercury) expand when heated.Mercury thermometers are based on the fact that materials (in this case, the liquid mercury) expand when heated.Mercury thermometers are based on the fact that materials (in this case, the liquid mercury) expand when heated.
Why does melting ice cause the liquid to stay the same and what does it have to do with Archimedes' Principle?
theres no change in temperature because the heat is used up in overcoming the forces of attraction between the molecules
