33 Questions
Which type of radiation has enough energy to ionize atoms such as those on DNA molecules?
Ultraviolet B
What is the speed of light in a vacuum?
3 x 10^8 meters per second
Which type of radiation is commonly used to weld plastic?
Radiofrequency
What is the classification given by the International Agency for Research on Cancer (IARC) to radiofrequency radiation?
Possibly carcinogenic to humans
Which of the following is NOT a recommended type of sunscreen?
Mist
According to the text, how much sunscreen should an average-sized adult apply to their face?
1/2 teaspoon
What is the recommended frequency for reapplying sunscreen when outdoors?
Every 2 hours
What type of hat is NOT recommended for sun protection?
Baseball cap
Which of the following best describes the condition known as 'vibration white finger'?
It is caused by gripping power tools for long periods in cold conditions
What is the risk of harm from vibration reduced by?
Both wearing gloves and modern design of machines
How can vibration to the whole body be transmitted?
Through the seats of vehicles with hard suspensions
Which type of radiation is classified as carcinogenic to humans?
UVB radiation
What is the main cause of skin tanning and sunburn?
UVB radiation
What are the three bands of UV radiation from the sun?
UV A, UV B, UV C
What is the acronym for laser?
Laser stands for 'light amplification by stimulated emission of radiation'
Which of the following is NOT recommended as a sun protection measure?
Using tanning beds
What is the purpose of wearing protective clothing for sun protection?
To create a barrier between the skin and the sun
What does the UV Index forecast indicate?
The times during the day when the UV index will reach 3 or above
What is the recommended SPF rating for sunscreen?
SPF 30+
Which of the following is true about direct electrical current (DC)?
DC causes severe coagulation of protein and charring of fat
What is the main cause of tissue damage with electrical injuries?
Heat produced by the current
What are the effects of high voltage DC, such as lightning injuries?
Causes asystole and tearing of tissues
Which of the following is recommended by The Cancer Council Victoria for sunglasses to protect eyes from UV radiation?
Sunglasses that are marked eye protection factor (EPF) 10
What is the purpose of using wrap-around, close-fitting, large sunglasses?
To reduce reflected UV radiation and glare
Which type of radiation has enough energy to bring a change to the molecules in its path as it passes through?
Ionising radiation
What is the recommended level of exposure to ionising radiation during pregnancy to avoid foetal malformations of the CNS?
More than 100 milligrays
Which of the following is a source of heat gain for the human body?
High air temperatures
What is the major means of dissipating heat from the body in hot conditions?
Evaporation of sweat
What can happen to workers handling frozen foods in very cold conditions?
Develop frostbite
Which of the following can increase the risk of Raynaud's phenomenon?
Exposure to cold and vibration
What are the symptoms that may occur when the core body temperature falls below -30oC?
Semi-consciousness and confusion
What is the risk associated with rough handling of a hypothermic patient?
Cardiac arrhythmia
What can cause a fire to be sustained?
Sufficient fuel vapour and oxygen
Test your knowledge on choosing the right sunglasses to protect your eyes from UV radiation. Learn about the recommended features and standards to look for when selecting sunglasses.
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