Does sound travel faster in a warm room or a cold room?

Let's establish two things first.

Sound is a form of energy.  

Waves are made by the oscillation (up, down and sideways movement) of partials. When partials oscillate, they transfer energy by bumping into each other.

Sound wave are waves that are created by the oscillation of air particles and carry sound energy from point A to point B.  

In a warm room, the air particles have higher energy compared to a cold room. Hence, they bump into each other more frequently.

This allow them to transfer the sound energy quickly and easily from one partial to another.  

Hence, sound travels faster in warm room then in cold room.

the aurora is formed when charged particles emitted from the sun during a solar flare penetrate the earth's magnetic shield and collide with atoms and molecules in our atmosphere. these collisions result in countless little bursts of light, called photons, which make up the aurora.

auroras are generated by charged solar particles hitting molecules in earth's atmosphere. this usually happens in high latitudes, because our planet’s magnetic field tends to funnel these particles toward the poles. that’s why it can be experienced in northern ohio.