Take away concepts
- Electromagnetic waves occur in a continous spectrum based on their wavelength.
- EM waves of a particular range of wavelengths are give names such as infrared and visible.
- Unlike mechanical waves such as sound or earthquake waves, EM waves can travel through empty space.
- EM waves are used for communication with satellites and for observing the Earth from space.
- Sunlight is made up of EM waves.
Educational Object Link