ch 2 quiz physics

Question 1

all electromagnetic radiation is made up of two different fields. identify the two types of fields, and briefly explain how the two fields are arranged relative to each other

Answer 1

electric field- caused by charged objects
magnetic field-caused by moving charges

Question 2

explain one drawback and one benefit of ultraviolet radiation

Answer 2

drawback- cancer-causing agent, causes sun burn and maybe later skin cancer
benefit- production of vitamin D

Question 3

explain one benefit of refracting telescopes

Answer 3

cheap, durable, and easy to care for

Question 4

explain one disadvantage of refracting telescopes

Answer 4

poor image

Question 5

which grouping lists the individual bands of the electromagnetic spectrum from high frequency to low frequency
a) x-rays, gamma rays, radio waves, infrared
b) gamma rays, infrared, radio waves, x-rays
c) gamma rays, x-rays, infrared, radio waves
d) infrared, radio waves, gamma rays, x-rays

Answer 5

c) gamma rays, x-rays, infrared, radio waves

Question 6

which grouping lists the individual bands of the electromagnetic spectrum according to increasing wavelength
a) radio waves, ultraviolet light, visible light, x-rays
b) radio waves, visible light, ultraviolet light, x-rays
c) x-rays, ultraviolet light, visible light, radio waves
d) visible light, ultraviolet light, radio waves, x-rays

Answer 6

c) x-rays, ultraviolet light, visible light, radio waves

Question 7

which of the following in the same value for all types of EMR
a) frequency
b) speed
c) wavelength
d) size

Answer 7

b) speed