Uv rays - Study guides, Revision notes & Summaries

As of what date did it become unlawful to release Class 1 and Class II refrigerants to the atmosphere? a. July 1, 1992 b. July 1, 1993 c. November 14, 1994 d. January 1, 1996 - a. July 1, 1992 What is the ozone layer and why is it important to us on Earth? a. Thin layer of R-22 in the atmosphere that filters UV. b. Protective shield for Earth from the sun's harmful ultraviolent (UV) rays in the stratosphere layer that extends about 6 to 30 miles above earth c. Thin layer of CFC and H...

Describe laser - Correct Answer ️️ -Monochromatic (single color), coherent (organized), collimated (tight, parallel beam) What 3 parts does a laser need in order to work properly? - Correct Answer ️️ -Energy source, active medium, & optical cavity What is a unit that measures the wavelength of light? - Correct Answer ️️ -Nanometer What light is outside of the visible spectrum? - Correct Answer ️️ -Ultraviolet Why do UV rays damage the skin? - Correct Answer ️️ -The rays...

As of what date did it become unlawful to release Class 1 and Class II refrigerants to the atmosphere? a. July 1, 1992 b. July 1, 1993 c. November 14, 1994 d. January 1, 1996 - answer-a. July 1, 1992 What is the ozone layer and why is it important to us on Earth? a. Thin layer of R-22 in the atmosphere that filters UV. b. Protective shield for Earth from the sun's harmful ultraviolent (UV) rays in the stratosphere layer that extends about 6 to 30 miles above earth c. Thin lay...

When should a service be refused to a client? - Answer when they have an inflamed skin disorder When is it okay to do a service on a client with a skin disorder? - Answer client has a physicians note permitting them to receive services What checklist does the American Cancer Society use to recognize skin cancer and what does each letter represent? - Answer A- asymmetry B- border C-color D-diameter E-evolving What % of skin aging is believed to be caused by exposure to the s...

As of what date did it become unlawful to release Class 1 and Class II refrigerants to the atmosphere? a. July 1, 1992 b. July 1, 1993 c. November 14, 1994 d. January 1, 1996 - ANSWER a. July 1, 1992 What is the ozone layer and why is it important to us on Earth? a. Thin layer of R-22 in the atmosphere that filters UV. b. Protective shield for Earth from the sun's harmful ultraviolent (UV) rays in the stratosphere layer that extends about 6 to 30 miles above earth c. Thin layer ...

CIBTAC Theory Questions and Answers with Complete Solutions What is the primary function of the skin? The primary function of the skin is to act as a protective barrier, shielding the body from harmful elements like bacteria and UV rays. What are the three main layers of the skin? The three main layers of the skin are the epidermis, dermis, and subcutaneous layer. How does the body regulate temperature through the skin? The body regulates temperature through sweating and the dila...

What steps does the Project Team need to follow to successfully achieve WELL? Register project on WELL Online, Gather project information and prepare documentation, Submit for Documentation Review, Schedule Performance Verification Light exposure in the __________ will shift our circadian rhythm ___________. Evening; back (phase delay) Under Feature 89, Adaptable Space, areas greater than 1,860 m2 (20,000 ft2) must provide a designated quiet space that meets what criteria for mechanical syst...

WCC Final Exam 110 Questions with Verified Answers Which of the following can disrupt the acid mantle? - CORRECT ANSWER Use of alkaline soaps What is the function of melanin? - CORRECT ANSWER UV radiation protection Other than the skin, what two organs are part of the metabolic pathway for the production of Vitamin D? - CORRECT ANSWER Liver and kidney What term is used to describe to temperature maintenance by the body? - CORRECT ANSWER Thermoregulation What environmental element ...

MIG Welding Safety Quiz Latest Update Graded A+ What is the most important personal protective equipment (PPE) for MIG welding? A welding helmet with proper shade to protect the eyes from harmful UV rays and sparks is the most important PPE for MIG welding. Why should you wear flame-resistant clothing during MIG welding? Flame-resistant clothing prevents burns from sparks and spatter, which can ignite regular clothing and cause serious injury. What can happen if you touch the ele...

First Law of Thermodynamics correct answers energy is neither created nor destroyed, may be converted from one form to another. Second Law of Thermodynamics correct answers when energy is changed from one form to another, some useful energy is degraded into lower quality energy (usually heat). Energy correct answers the ability to do work. Units of energy: joules, calories, kilocalories, British thermal units (BTUs), Kilowatt-hours (kWh) Power correct answers the rate of doing work (wor...