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.
Warm air always rises.
Warm air always rises.
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.
Its molecules move around more slowly, so there is more space between them, making it less dense than the air above it.
1 answer
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.
As air gains thermal energy from a heater, the molecules move faster and spread apart, resulting in a decrease in density. This less dense warm air rises above the cooler, denser air surrounding it.
