Why does hot air rise from pavement on a hot summer day?(1 point)
Responses
Due to radiation
Due to radiation
Due to insulation
Due to insulation
Due to convection
Due to convection
Due to conduction
Due to conduction
Which investigation shows the transfer of heat energy in the absence of matter?(1 point)
Responses
Using particle movement through a solid to investigate conduction
Using particle movement through a solid to investigate conduction
Using particles in space colliding to investigate conduction
Using particles in space colliding to investigate conduction
Using electromagnetic waves to investigate radiation
Using electromagnetic waves to investigate radiation
Using a current through fluid to investigate radiation
Using electromagnetic waves to investigate radiation
Simone has a mug of hot tea at a temperature of 90°C. She sets the mug on a counter in a room with an air temperature of 30°C. What is most likely to happen to the temperature of the hot tea?(1 point)
Responses
The air will transfer thermal energy into the tea and will continue to transfer energy until they are both 90°C.
The air will transfer thermal energy into the tea and will continue to transfer energy until they are both 90°C.
The air will transfer thermal energy into the tea, and the energy transfer will continue until the tea is at room temperature.
The air will transfer thermal energy into the tea, and the energy transfer will continue until the tea is at room temperature.
The hot tea will transfer thermal energy into the air, and the energy transfer will continue until the tea is at room temperature.
The hot tea will transfer thermal energy into the air, and the energy transfer will continue until the tea is at room temperature.
The hot tea will transfer thermal energy into the air and will continue to transfer energy until they are both 90°C.
The hot tea will transfer thermal energy into the air, and the energy transfer will continue until the tea is at room temperature.
Hot air rises from pavement on a hot summer day due to convection.
The correct answer is:
Due to convection.
On a hot summer day, the pavement absorbs sunlight and becomes much hotter than the surrounding air. Heat is then transferred from the pavement to the air through a process called conduction. As the air near the pavement gets heated, it becomes less dense and starts to rise. This creates a convection current, where the hot air rises and the cooler air replaces it. This phenomenon is commonly observed as the shimmering effect above the pavement, also known as a heat mirage.
Radiation is the transfer of heat through electromagnetic waves, which does play a role in heating the pavement initially. However, in this case, convection is the primary mechanism responsible for the rising hot air. Insulation and conduction are not the main factors for the rising hot air in this scenario.