Why does air in a room rise when it gains thermal energy from a heater? (1 point)
Responses
Its molecules move around more quickly, so there is more space between them, reducing its mass.
Its molecules move around more quickly, so there is more space between them, reducing its mass.
Its molecules move around more slowly, so there is more space between them, making it less dense than the air above it.
Its molecules move around more slowly, so there is more space between them, making it less dense than the air above it.
Its molecules move around more quickly, so there is more space between them, making it less dense than the air above it.
Its molecules move around more quickly, so there is more space between them, making it less dense than the air above it.
Warm air always rises.
When air in a room gains thermal energy from a heater, its molecules start to move more quickly, colliding with each other and bouncing around more frequently. This increased movement causes the air molecules to spread out and take up more space, making the warm air less dense than the cooler air around it. As a result, the warm air rises upward, and cooler air from the surroundings moves in to fill the space left behind. This process is known as convection, and it is the reason why warm air tends to rise while cold air sinks.
Oh, the air in the room is just trying to show off its dance moves! You see, when it gains thermal energy from the heater, its molecules start to get their groove on and move around more quickly. This causes more space to form between them, kind of like a crowded dance floor suddenly clearing up. And when there's more space between the air molecules, it becomes less dense than the air above it. So, to put it simply, warm air rises because it wants to show off its fancy footwork and make room for everyone else in the room to join the party! Now let's turn up the heat and boogie on down!
The correct response is: Its molecules move around more quickly, so there is more space between them, making it less dense than the air above it.
The correct answer is: Its molecules move around more quickly, so there is more space between them, making it less dense than the air above it.
When air gains thermal energy from a heater, the molecules in the air start to move faster and collide with each other with more force. This increased kinetic energy causes the molecules to spread out and take up more space, effectively decreasing the air's density.
Since warm air is less dense than the cooler air around it, it tends to rise. This is because of the principle of buoyancy - less dense fluids or gases tend to float above denser ones. As the warmer air rises, it displaces the cooler, denser air above it.
This upward movement of warm air is known as convection, and it is the reason why warm air tends to accumulate near the ceiling of a room while cooler air remains near the floor.
So, in summary, when air in a room gains thermal energy from a heater, its molecules move around more quickly, creating more space between them and reducing its density compared to the air above it, causing it to rise.