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FREE PHYSICAL SCIENCE AND STUDY GAMES ABOUT 8TH
GRADE CHAPTER 17 EXAM QUESTIONS
Actual Qs and Ans Expert-Verified Explanation
This Exam contains:
-Guarantee passing score -20 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation
Question 1: fluorescent bulbs
Answer:
are coated on the inside with a powder
Question 2: infrared rays
Answer:
can be sensed by humans
Question 3: waves with some electrical properties and some magnetic properties
Answer:
are electromagnetic waves
Question 4: ultraviolet rays
Answer:
help your body produce vitamin D
Question 5: an incandescent light bulb
Answer:
glows when a filament inside it gets hot
Question 6: gamma rays
Answer:
electromagnetic waves with the highest frequencies
Question 7: electromagnetic waves can transfer energy
Answer:
without a medium
Question 8: microwaves
Answer:
kind of waves that cellular telephones use to transmit and receive signals
Question 9: photon
Answer:
a packet of light energy
Question 10: speed of an electromagnetic wave
Answer:
equal to wavelength times frequency
Question 11: ultraviolet rays
Answer:
can be used to kill bacteria
Question 12: electromagnetic spectrum
Answer:
the range of electromagnetic waves placed in a certain order
Question 13: radio waves
Answer:
electromagnetic waves with the longest wavelengths and lowest frequencies
Question 14: neon light bulbs
Answer:
commonly used in advertising signs and decoration
Question 15: in a vacuum, all electromagnetic waves
Answer:
have the same speed
Question 16: polarized light
Answer:
light that has passed through a polarizing filter
Question 17: electromagnetic waves
Answer:
transfer electromagnetic radiation
Question 18: FM signals travel
Answer:
as changes in the frequency of the wave
Question 19: thermograms
Answer:
the images made by an infrared camera
Question 20: spectroscope
Answer:
an instrument used to view different colors of light produced by each type of light bulb
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