Both electromagnetic waves and gravity waves can travel through empty space. Gravity waves travel through matter as well; some electromagnetic waves may travel through some types of matter.
Electromagnetic waves.
Electron free light.
Light travels fastest through empty space.
A type of wave that can travel through empty space as well as through matter is electromagnetic wave. Light travels fastest in empty spaces.
It is required in both that the pieces of matter are touching so that the heat travels through the matter and not empty space (Radiation)
No. As an example, the light from the Sun travels through empty space to reach us.
Convection travels through matter. It won't travel through empty space.Convection travels through matter. It won't travel through empty space.Convection travels through matter. It won't travel through empty space.Convection travels through matter. It won't travel through empty space.
Electron free light.
Light travels fastest through empty space.
A type of wave that can travel through empty space as well as through matter is electromagnetic wave. Light travels fastest in empty spaces.
Heat travels through empty spaces by radiation.
It is required in both that the pieces of matter are touching so that the heat travels through the matter and not empty space (Radiation)
No. As an example, the light from the Sun travels through empty space to reach us.
Radiation travels through empty space and substance.
One example would be X-Rays. They are stopped by Lead, but travel through other matter and empty space.
Light travels faster (up to the speed of light) in a vacuum, which is empty space. Light travels slower through a medium (matter).
slow down and refract
It depends. Is it a mechanical wave or a electromagnetic wave? Mechanical waves (for example sound waves) travel trough every state of matter and they can't exist without matter. They don't travel through vacuum. Electromagnetic waves travel trough space and get interrupted only by other electromagnetic waves.