Which of the following describes a difference between electromagnetic waves and mechanical waves?

SAT

2 answers:

Evgesh-ka [11]3 years ago

7 0

Answer:

I believe it is A

Explanation:

Apex:))

JulijaS [17]3 years ago

5 0

Answer:

B) Only mechanical waves require a liquid, solid, or gas to travel.

Explanation:

The Electromagnetic Wave is a wave that is capable of transmitting its energy through a vacuum (i.e., empty space). Electromagnetic waves are produced by the vibration of charged particles (for example, light waves).

A mecanical wave is a wave that is not capable of transmitting its energy through a vacuum. Mechanical waves require a medium (liquid, solid, or gas) in order to transport their energy from one location to another (an example of this is water waves)

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Frozen water is less dense than liquid water, allowing lake organisms to survive winter. true false

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<h3>Density of Frozen water and Liquid water</h3>

By definition, density is the mass per unit volume of a substance, a property which is characteristic to each substance.

By convention, solid state of a substance are said to be denser than liquid state of the same substance. Hence, it follows that frozen water is denser than liquid water and does not allow lake organisms to survive.