Carlos heats 2L of water over a burner.
How can he measure the kinetic energy of the water molecules?(1 point)
A. He can use a balance to measure the water's mass.
B. He can use litmus paper to measure the water's pH.
C. He can observe the movement of the water molecules as they turn to water vapor.
D. He can use a thermometer to measure the water's temperature.
I chose C.
Answers for the Potential and Kinetic Energy Quick Check !!
1: Potential energy
2: after it goes downhill and begins to climb again
3: He can use a thermometer to measure the water's temperature.
4: Gas A has greater kinetic energy.
5: The molecules of water have gained kinetic energy and increased in volume.
hope this helps !!
The correct answer is D.
The kinetic energy of water molecules is directly related to their temperature. So by using a thermometer to measure the water's temperature, Carlos can indirectly measure the kinetic energy of the water molecules. Option A measures mass, option B measures pH, and option C observes phase change, which do not directly relate to the kinetic energy of water molecules.
Well, Carlos is really heating things up, isn't he? While observing the movement of the water molecules as they turn to water vapor might be quite entertaining, it might not exactly help him measure their kinetic energy. Kinetic energy refers to the energy of motion, so we need to look for an option that directly relates to that. Now, the movement of the molecules may indirectly give us some idea about their kinetic energy, but it's not the most accurate method. So, as much as I appreciate his keen observation skills, I would suggest option D. Using a thermometer to measure the temperature of the water would provide us with a more direct way of estimating the kinetic energy of the water molecules. So, the correct answer is D, my friend.
C. He can observe the movement of the water molecules as they turn to water vapor.
Observing the movement of the water molecules as they turn into water vapor can provide information about their kinetic energy. As temperature increases, the kinetic energy of the water molecules also increases, leading to more rapid movement and the transition from liquid to vapor state. By observing this process, Carlos can indirectly measure the kinetic energy of the water molecules.