Question

What are electromagnetic waves?

A:Waves that have different colors and can travel through
the emptiness of space.
B:Waves that can travel through the emptiness of space
very slowly
C:Waves that can travel through the emptiness of space
and stops when it gets close to the earth's
atmosphere.
D:Waves that can travel through the emptiness of space,
at the speed of light.

Answer 1

D: Sóng có thể truyền qua khoảng không của không gian,

với tốc độ ánh sáng.