Sunglasses 101
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Questions and Answers

Which type of radiation has enough energy to ionize atoms such as those on DNA molecules?

  • Visible light
  • Ultraviolet B (correct)
  • Infra red
  • Radiofrequency

    • What is the speed of light in a vacuum?

  • 3 x 10^7 meters per second
  • 3 x 10^6 meters per second
  • 3 x 10^8 meters per second (correct)
  • 3 x 10^5 meters per second

    • Which type of radiation is commonly used to weld plastic?

  • Ultraviolet B
  • Visible light
  • Infra red
  • Radiofrequency (correct)

    • What is the classification given by the International Agency for Research on Cancer (IARC) to radiofrequency radiation?

    <p>Possibly carcinogenic to humans</p> Signup and view all the answers

    Which of the following is NOT a recommended type of sunscreen?

    <p>Mist</p> Signup and view all the answers

    According to the text, how much sunscreen should an average-sized adult apply to their face?

    <p>1/2 teaspoon</p> Signup and view all the answers

    What is the recommended frequency for reapplying sunscreen when outdoors?

    <p>Every 2 hours</p> Signup and view all the answers

    What type of hat is NOT recommended for sun protection?

    <p>Baseball cap</p> Signup and view all the answers

    Which of the following best describes the condition known as 'vibration white finger'?

    <p>It is caused by gripping power tools for long periods in cold conditions</p> Signup and view all the answers

    What is the risk of harm from vibration reduced by?

    <p>Both wearing gloves and modern design of machines</p> Signup and view all the answers

    How can vibration to the whole body be transmitted?

    <p>Through the seats of vehicles with hard suspensions</p> Signup and view all the answers

    Which type of radiation is classified as carcinogenic to humans?

    <p>UVB radiation</p> Signup and view all the answers

    What is the main cause of skin tanning and sunburn?

    <p>UVB radiation</p> Signup and view all the answers

    What are the three bands of UV radiation from the sun?

    <p>UV A, UV B, UV C</p> Signup and view all the answers

    What is the acronym for laser?

    <p>Laser stands for 'light amplification by stimulated emission of radiation'</p> Signup and view all the answers

    Which of the following is NOT recommended as a sun protection measure?

    <p>Using tanning beds</p> Signup and view all the answers

    What is the purpose of wearing protective clothing for sun protection?

    <p>To create a barrier between the skin and the sun</p> Signup and view all the answers

    What does the UV Index forecast indicate?

    <p>The times during the day when the UV index will reach 3 or above</p> Signup and view all the answers

    What is the recommended SPF rating for sunscreen?

    <p>SPF 30+</p> Signup and view all the answers

    Which of the following is true about direct electrical current (DC)?

    <p>DC causes severe coagulation of protein and charring of fat</p> Signup and view all the answers

    What is the main cause of tissue damage with electrical injuries?

    <p>Heat produced by the current</p> Signup and view all the answers

    What are the effects of high voltage DC, such as lightning injuries?

    <p>Causes asystole and tearing of tissues</p> Signup and view all the answers

    Which of the following is recommended by The Cancer Council Victoria for sunglasses to protect eyes from UV radiation?

    <p>Sunglasses that are marked eye protection factor (EPF) 10</p> Signup and view all the answers

    What is the purpose of using wrap-around, close-fitting, large sunglasses?

    <p>To reduce reflected UV radiation and glare</p> Signup and view all the answers

    Which type of radiation has enough energy to bring a change to the molecules in its path as it passes through?

    <p>Ionising radiation</p> Signup and view all the answers

    What is the recommended level of exposure to ionising radiation during pregnancy to avoid foetal malformations of the CNS?

    <p>More than 100 milligrays</p> Signup and view all the answers

    Which of the following is a source of heat gain for the human body?

    <p>High air temperatures</p> Signup and view all the answers

    What is the major means of dissipating heat from the body in hot conditions?

    <p>Evaporation of sweat</p> Signup and view all the answers

    What can happen to workers handling frozen foods in very cold conditions?

    <p>Develop frostbite</p> Signup and view all the answers

    Which of the following can increase the risk of Raynaud's phenomenon?

    <p>Exposure to cold and vibration</p> Signup and view all the answers

    What are the symptoms that may occur when the core body temperature falls below -30oC?

    <p>Semi-consciousness and confusion</p> Signup and view all the answers

    What is the risk associated with rough handling of a hypothermic patient?

    <p>Cardiac arrhythmia</p> Signup and view all the answers

    What can cause a fire to be sustained?

    <p>Sufficient fuel vapour and oxygen</p> Signup and view all the answers

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