How do you expect the water level to change when the apparatus is placed in warm water? In cool water?
I would expect it to rise in warmer water, and fall in cooler water. The text above states this.
This was all on the worksheet
so you now how is the assort
The particles of matter are in constant motion.
The energy of motion is called kinetic energy, so
the particles of matter have kinetic energy. As matter becomes warmer, its particles move faster. As a result, their kinetic energy increases. Temperature is related to kinetic energy. As temperature increases, kinetic energy also increases.
One way to measure the temperature of matter is
to place a thermometer in contact with it. Some of the matter’s kinetic energy is transferred to the thermometer if the matter is warmer than the thermometer. The increased kinetic energy causes the particles of the liquid in the thermometer to move farther away from each other. As a result, the liquid in the thermometer expands and rises up the tube. If the matter is colder than the thermometer, the thermometer loses energy
to the matter. This makes the particles of the liquid in the thermometer move closer to each other, causing the liquid to contract and drop in the tube.
Reviewing Inquiry Focus
When you analyze a model, you determine how well the model can be used to predict what happens in the real world. In this lab, you will put together a combination of materials that simulates how a real thermometer works. Then you will test it to see if it behaves like a real thermometer when it is placed in contact with warm water and then cold water. With these statements in mind, preview the Lab Investigation. Then answer the questions.
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To predict how the water level will change when the apparatus is placed in warm water or cool water, we need to consider the concept of thermal expansion.
When an object is subjected to heating (warm water) or cooling (cool water), it can undergo thermal expansion or contraction. This means the object may expand when heated and contract when cooled. Water is no exception to this behavior.
When the apparatus is placed in warm water, the water molecules around the apparatus will gain energy and increase their kinetic energy. As a result, the water molecules will move faster and spread out, causing the water to expand slightly. Consequently, the water level in the apparatus will rise.
Conversely, when the apparatus is placed in cool water, the water molecules around the apparatus will lose energy and slow down. As a result, the water molecules will move closer together, causing the water to contract slightly. Consequently, the water level in the apparatus will decrease.
Therefore, when the apparatus is placed in warm water, the water level will rise due to water expansion, and when placed in cool water, the water level will decrease due to water contraction.