Wisconsin CNA State Exam Vocabulary Practice

What is a common characteristic of a "Glass thermometer"?

1. A covering for the hand having separate sections for each of the fingers and the thumb

2. A glass bulb attached to a fine tube of glass with a numbered scale

3. A sealed glass bulb containing liquid that rises and falls with temperature changes

4. The varying emotional responses to grief

The correct answer is: A sealed glass bulb containing liquid that rises and falls with temperature changes

The correct answer highlights that a glass thermometer typically contains a sealed glass bulb filled with liquid, which is responsive to temperature changes. In these thermometers, as the temperature rises, the liquid expands and moves up the fine tube, and conversely, when the temperature falls, the liquid contracts and moves down the tube. This principle allows for precise temperature readings, making glass thermometers a reliable tool in clinical and laboratory settings. The other options refer to characteristics that do not apply to glass thermometers. For instance, a covering for the hand with sections for fingers relates to a glove, while a glass bulb attached to a fine tube aligns more closely with traditional thermometers but misses the key point about the liquid whose movement indicates temperature changes. Lastly, the varying emotional responses to grief is unrelated to temperature measurement altogether. This understanding of a glass thermometer's design and function is essential for anyone studying medical or nursing practices.