feel cooler? (1 point)
Air moves from the areas of higher temperature to areas of lower temperature.
Cold air is moving into the room from outside.
The density of the air is lower on the inside than on the outside.
The kinetic energy of the air molecules outside is higher than the kinetic energy of the air molecules inside.
7 answers
The correct statement that explains why the room starts to feel cooler when a teacher opens a window on a cold day is:
Cold air is moving into the room from outside.
This is because opening the window allows the colder, denser air from outside to enter the room, which leads to a decrease in the overall temperature of the room.
The best description of what happens to the temperature of each after the bottle of liquid water is placed into the tub filled with ice is:
The temperature of the ice increases, while the temperature of the water decreases.
When the warm water is placed in contact with the ice, the warmer water loses heat to the colder ice, causing the temperature of the water to decrease. At the same time, the ice absorbs heat, which raises its temperature and may cause some of it to melt.
Without seeing the photo, I can provide general definitions for the terms you've mentioned:
Movement of molecules by conduction: This refers to the transfer of heat through direct contact between materials, where faster-moving (hotter) molecules collide with slower-moving (cooler) molecules.
Movement of molecules by vibration: This describes how molecules move in place, typically in solids, where they vibrate around fixed positions.
Heat transfer by radiation: This refers to the transfer of heat in the form of electromagnetic waves, such as infrared radiation, which can occur in a vacuum.
Heat transfer by direct contact: This is essentially the same as conduction, where heat is transferred between materials that are in direct physical contact.
Based on these definitions, if the photo depicts heat being transferred through direct contact (like touching a hot surface), it would relate to conduction or heat transfer by direct contact. If there is no direct contact and heat is being transferred through electromagnetic waves, then it would be radiation.
Given the need for clarification based on physical representations, if you can provide more context or describe the photo, I'd be happy to help you pinpoint the correct answer!
Given that the photo depicts a person touching a heater, the correct answer would be:
Heat transfer by direct contact.
This scenario involves the person making physical contact with the heater, allowing heat to transfer from the heater to the person's skin through conduction. Therefore, while "movement of molecules by conduction" is relevant, the intended focus in this context is on the direct contact aspect of heat transfer.
