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11. The most dangerous type of light in the universe is; a. microwave c. Xray b. gamma ray d. ultraviolet wave 12. The color with the longest wavelength is: a.yellow b. red c. orange d. blue 13. Which color has the longest waves? a. yellow b. red c. orange d. blue 14. Which color has the lowest frequency? a. yellow b.red c. orange d. blue 15. If a material absorbs all frequencies of light waves EXCEPT green, what color will be perceived by the observer? a. yellow b. indigo C. orange d.green 16. The wavelength from red to violet is: a. increasing C. can't be determine b. decreasing d. the same _17. The frequency from red to violet is: a. increasing C. can't be determine b. decreasing d. the same 18. Which of the following is NOT a unit of temperature, a. Calorie C. Celsius b. Fahrenheit. d. Kelvin
Explanation:The most dangerous frequencies of electromagnetic energy are X-rays, gamma rays, ultraviolet light and microwaves. X-rays, gamma rays and UV light can damage living tissues, and microwaves can cook them.
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