Page 41 - Science Course 1 (Book 2)
P. 41
Mo8-L1b: What are Mechanical and Thermal Energy?
Key Concept Electromagnetic waves often are described by their
wavelengths—the distance from one point on a wave
What are Mechanical and Thermal Energy? to the nearest point just like it.
Compare mechanical energy and thermal energy. Electric Field
Magnetic Wavelength
Field
Direction
of travel
Visible light is one form of radiant energy.
Energy Carried by Waves
A wave is a disturbance that transfers energy from
one place to another without transferring matter. Key Concept
What are Mechanical and Thermal Energy?
What two forms of energy are carried by waves?
Sound energy is carried by sound waves.
The energy carried by electromagnetic waves is
radiant energy
SUMMARY
What are Mechanical and Thermal Energy?
Mechanical energy is due to large-scale
motions and interactions in a system. Thermal
energy is due to atomic-scale motions and
interactions in particles.
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