Which property is unique to electromagnetic waves?
A.) They can shake structures on Earth.
B.) They can be controlled by the pull of gravity.
C.) They can travel on the surface of water.
D.) They can travel in a vacuum
D. They can travel in a vacuum.
The correct answer is D.) They can travel in a vacuum.
To determine the unique property of electromagnetic waves, we need to consider the characteristics of each option:
A.) They can shake structures on Earth.
This property is not unique to electromagnetic waves. Mechanical waves, such as seismic waves or sound waves, also have the ability to shake structures on Earth.
B.) They can be controlled by the pull of gravity.
This property is not unique to electromagnetic waves either. Many other objects, such as physical objects or particles, can also be influenced by the pull of gravity.
C.) They can travel on the surface of water.
This property is specific to surface waves, which are a type of mechanical wave. Electromagnetic waves do not exhibit this behavior.
D.) They can travel in a vacuum.
This property is unique to electromagnetic waves. Unlike mechanical waves, electromagnetic waves do not require a medium, such as air or water, to propagate. They can freely travel through empty space (a vacuum) at the speed of light.
Therefore, option D is the correct answer as it describes the unique property of electromagnetic waves