Question

which are characteristics of electromagnetic waves? check all that apply. they travel only through matter. waves with a higher frequency have a shorter wavelength. waves with a higher frequency have a longer wavelength. they all move at the same speed. they can travel through space.

Explanation:

Electromagnetic waves can travel through a vacuum (space) as well as matter. The relationship between frequency ($f$) and wavelength ($\lambda$) is given by $c = f\lambda$, where $c$ is the speed of light (constant). So higher - frequency waves have shorter wavelengths. All electromagnetic waves move at the speed of light in a vacuum.

Answer:

• Waves with a higher frequency have a shorter wavelength.
• They all move at the same speed.
• They can travel through space.