AVIA 400 Quiz: Gases in the Cockpit
Covers the Learn material from Module 1: Week 1 — Module 2: Week 2.
- A prickling, tingling, or itching of the skin caused by altitude decompression sickness (DCS) is called
- 9 percent of the atmosphere’s mass lies below approximately 164,000 feet MSL, while ________ percent lies below 53,000 feet MSL.
- At what altitude does water within the body begin to boil?
- Law states that the amount of gas dissolved in a solution is directly proportional to the pressure of the gas over the solution.
- Compared to cones during the day, rods are more sensitive to ________ light and less sensitive to light at night.
- The ________ shift describes what happens to color sensitivity when transitioning from photopic vision to scotopic vision.
- is the inability to use or understand words and can occur with DCS.
- A gas under enough pressure will __________ , and when the pressure is reduced it will back into gaseous form.
- is a pilot’s most important sense when it comes to obtaining information needed to safely y an aircraft.
- Half the weight of the earth’s atmosphere (i.e., 50 percent of its mass) lies below _________ feet MSL.
- The physiological deficient zone extends from ________ feet to 50,000 feet.
- Focusing on an object involves changing the shape of the lens of the eye, a process
- The creeps is the most common symptom of decompression sickness among aircrew.
- The ___________ (neurological manifestations) are the least common symptoms of DCS but are very serious and can result in death.
- DCS is normally only a problem above _________ feet but occasionally can occur as low as 18,000 feet.
- The __________ involve N2 bubbling into the joints and muscles of the knees, shoulders, elbows, wrists or hands, ankles or feet, and rarely the hips.
- Less than 1 percent of DCS symptoms occur at 18,000 feet.
- is a nearsightedness that occurs at high altitudes, in reduced visibility, and at night.
- A loss of vision in part of the visual eld due to DCS, is known as
- The process of breathing in oxygen and breathing out carbon dioxide is called
- As light levels drop, the cones stop functioning while the rods continue increasing their sensitivity until the eyes can better see with lower light intensities. This process is called
- Your best visual acuity is only good up to a maximum of one to two degrees from the center of the fovea in daylight conditions, which corresponds to size of a ________ held at arm’s length.
- If sea-level pressure is 1,000 mb (or hPa), the partial pressure of oxygen (O2) is approximately __________ hPa (mb).
- The air we breathe consists mainly of _________.
- The altitude at which water within the blood “boils” or changes into water vapor is known as __________ Line.