Electromagnetic Waves: Questions And Expert Solutions

Electromagnetic Waves: Questions And Expert
Solutions

All of the following are examples of electromagnetic waves except:
a. sound waves. b. microwaves. c. gamma rays. d. infrared light. Right Ans -
a. sound waves.

An electromagnetic wave begins when a(n):
a. atom loses an electron. b. magnet is connected to a battery. c. charged
particle vibrates. d. electron is magnetized. Right Ans - c. charged particle
vibrates.

Which of the following waves does not require a medium?
a. ocean waves b. earthquake waves c. sound waves d. radio waves Right
Ans - d. radio waves

Most of the electromagnetic radiation on Earth comes from:
a. the sun. b. radio towers. c. X ray machines. d. microwave ovens. Right
Ans - a. the sun.

Uses of electromagnetic radiation include:
a. cooking. b. communications. c. medicine. d. all of the above Right Ans - d.
all of the above

The wave-particle theory explains the difference between electromagnetic
and
mechanical waves. Right Ans - False

A vibrating electric field generates a charged particle. Right Ans - False

All electromagnetic radiation is dangerous except for light. Right Ans -
False

Electromagnetic radiation provides the energy that plants need for
photosynthesis. Right Ans - True

An electromagnetic wave gains energy as it travels across space. Right Ans
- False