Question

A) Which type of wave needs a medium to travel? (1 point)
light waves, because they travel by oscillating molecules
light waves, because they travel by oscillating electromagnetic fields
sound waves, because they travel by oscillating molecules
sound waves, because they travel by oscillating electromagnetic fields
A) What do both sound and light waves transfer? (1 point)
air
electricity
matter
energy

Answer 1

A) **Sound waves, because they travel by oscillating molecules** need a medium to travel.

B) Both sound and light waves transfer **energy**.