Which statement correctly describes both sound and light waves?
A. Light waves travel slower than sound waves.
B. Light waves can travel through water, sound waves cannot.
C. Light waves can travel through space, sound waves cannot.
D. Light waves travel as mechanical waves.

Option C. Light waves can travel through space, sound waves cannot.

Explanation:

Light is an electromagnetic wave which requires no Meduim for propagation. However, sound wave requires a medium for propagation. Since space is empty, sound can not travel through it.

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask

small = small current large mag large current