Question

How is hotter air different than colder air?

A. Hotter air consists of different molecules than colder air.
B. In hotter air, the molecules are closer together and moving more slowly.
C. In hotter air, the molecules are farther apart and moving more rapidly.
D. Hot air is denser than colder air.

Answer 1

C.

Step-by-step explanation:

The molecules in hot air are moving faster than the molecules in cold air. Because of this, the molecules in hot air tend to be further apart on average, giving hot air a lower density. That means, for the same volume of air, hot air has fewer molecules and so it weighs less.

Answer 2

Question:-

How is hotter air different than colder air?

Options:-

1. A. Hotter air consists of different molecules than colder air.
2. B. In hotter air, the molecules are closer together and moving more slowly.
3. C. In hotter air, the molecules are farther apart and moving more rapidly.
4. D. Hot air is denser than colder air.

Answer:-

Option C :- In hotter air, the molecules are farther apart and moving more rapidly.

Explanation :-

1. When temperature rises Kinetic energy of the gases increase when helps them to overcome there interatomic molecules so they move further away from each other
2. Due to increase in Kinetic energy there Velocity ( net ) also increase which helps them to move fast
3. As the particles moves far away there density also decrease as less mass of the gas is present in same volume or we can say same mass as larger volume then the colder one
4. With change in temperature only there energies got changed so we can say hotter and colder air has same molecules is same gas heated or chilled