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Time to Fly – Science Olympiad 2016-2017 – Boyceville Invitation
Written by 1st Lt. Jack Owen and Capt. Mike Scott (CFII) – Eau Claire Civil Air Patrol Composite Squadron.
Matching, T/F, and multiple choice – each correct answer is worth 1 point for this section.
1. The four forces acting on an airplane in flight are
a. Lift, Weight, Gravity and Thrust
b. Lift, Gravity, Power and Friction
c. Lift, Weight, Thrust and Drag
d. Wind, Gravity, Power and Angle of Attack.
2. The term “angle of attack” is defined as the angle between the
a. Airplane’s center line and the relative wind
b. Chord line of the wing and the relative wind
c. Compass heading of the wind and the compass heading of the runway
d. Airplane’s longitudinal axis and that of the air striking the airfoil
3. Bernoulli’s principle states, “As a fluid’s speed ___________, the pressure within the fluid
decreases.”
a. Decreases
b. Stays constant
c. Increases
d. None of the above
4. Generally, the less dense the air, the less lift is available. (True or False)
5. The left turning tendency of an airplane caused by P-factor is the result of the
a. Propeller blade descending on the right, producing more thrust than the ascending blade of
the left.
b. Gyroscopic forces applied to the rotating propeller blades acting 90 degrees in advance of
the point the force was applied.
c. Clockwise rotation of the engine and the propeller turning the airplane counterclockwise.
d. The left wing pitched at a slightly steeper angle than the right.
6. One weather phenomenon which will always occur when flying across a front is a change in the
a. Type of precipitation
b. Stability of the air mass
c. Wind direction
d. None of the above
7. What conditions are necessary for the formation of thunderstorms?
a. Lifting force, moist air, and extensive cloud cover
b. High humidity, lifting force, unstable conditions
c. Warm air, low humidity, high winds
d. High humidity, high temperature, and cumulus clouds.
8. During the lifecycle of a thunderstorm, which stage is characterized predominately by
downdrafts?
a. Mature
b. Cumulus
c. Dissipating
d. None of the above
9. Which weather phenomenon is always associated with a thunderstorm?
a. Hail
b. Heavy Rain
c. Lightning
d. Fog
10. One in-flight condition necessary for structural icing to form is
a. Stratiform clouds
b. Small temperature/dew point spread
c. Visible moisture
d. Low dew point
11. What is the process by which moisture is added to unsaturated air?
a. Heating and condensation
b. Evaporation and sublimation
c. Supersaturation and evaporation
d. None of the above
12. The amount of water vapor which air can hold depends on the
a. Air temperature
b. Dew point
c. Stability of the air
d. All of the above
13. Which conditions result in the formation of frost?
a. The temperature of the collecting surface is at or below freezing when small droplets of
moisture fall on the surface.
b. The temperature of the collecting surface is at or below the dew point of the adjacent air
and the dew point is below freezing.
c. The temperature of the surrounding air is at or below freezing when small droplets of
moisture fall on the collecting surface.
d. None of the above
14. The suffix “nimbus” used in naming clouds means
a. A middle cloud
b. A rain cloud
c. A cloud with extensive vertical development
d. A high, thin cloud
15. Clouds are divided into four families according to
a. Size
b. Composition
c. Height
d. Shape
16. What is a characteristic of stable air?
a. Stratiform clouds
b. Unlimited visibility
c. Cumulus Clouds
d. None of the above
17. How many Global Positioning System (GPS) satellites are required to yield a three-dimensional
position (latitude, longitude, and altitude) and time solution?
a. Three
b. Four
c. Five
d. Six
18. How many satellites make up the Global Positioning System (GPS)?
a. 18
b. 25
c. 24
d. 22
19. The angular difference between true north and magnetic north is
a. Magnetic Variation
b. Compass acceleration error
c. Magnetic Deviation
d. None of the above
20. When converting from true course to magnetic heading, a pilot should
a. Subtract westerly variation and add right wind correction angle.
b. Subtract easterly variation and tight wind correction angle.
c. Add westerly variation and subtract left wind correction angle
d. No conversion is needed.
21. An aircraft departs an airport in the central standard time zone at 0845CST for a 2-hour flight to
and airport located in the mountain standard time zone. The landing should be at what
coordinated universal time?
a. 1745 Z
b. 1645 Z
c. 1545 Z
d. 1445 Z
22. What is true Altitude
a. The height above the standard datum plane
b. The vertical distance of the aircraft above the surface
c. The vertical distance above sea level
d. None of the above
23. Every physical process of weather is accompanied by or the result of, a
a. Movement of air
b. Heat exchange
c. Due to the moons gravity
d. Pressure differential
24. Wing tip vortices are created only when an aircraft is
a. Developing lift
b. Heavily loaded
c. Operated at high air speeds
d. None of the above
25. How does the wake turbulence vortex circulate around each wingtip?
a. Inward, upward and around each wingtip
b. Inward, upward and counterclockwise
c. Inward, upward and clockwise
d. Outward, upward and around each wingtip
26. Wingtip vortices created by large aircraft tend to
a. Have no effect on small aircraft
b. Sink below the aircraft generating turbulence
c. Rise into the traffic pattern
d. Rise into the takeoff or landing path of a crossing runway
27. If a flight is made from an area of low pressure into an area of high pressure without an
altimeter setting being adjusted, the altimeter will indicate
a. Lower than the actual altitude above sea level
b. The actual altitude above sea level
c. Higher than the actual altitude above sea level
28. During flight, when are the indications of a magnetic compass accurate?
a. During turns if the bank does not exceed 18 degrees
b. As long as the airspeed is constant
c. Only when there is a low tide
d. Only in straight and level unaccelrated flight
29. Which basic flight maneuver increases the load factor on an airplane as compared to straight
and level flight.
a. Stalls
b. Climbs
c. Turns
d. Takeoffs
30. An airplane has been loaded in such a manner that the Center of Gravity is located aft of the
Center of Gravity limit. One undesirable flight characteristic a pilot might experience with this
airplane would be
a. Difficulty in recovering from a stalled condition
b. Stalling at a higher than normal air speed
c. Longer take off run
d. Difficulty breaking on landings
31. What is the purpose of the ruder on an airplane?
a. To control yaw
b. To control overbanking tendency
c. To control roll
d. To control the pitch of the propeller
32. What force makes an airplane turn?
a. The horizontal component of lift
b. The vertical component of lift
c. Centrifugal force
d. Coriolis Force
33. Deviation error of the magnetic compass is caused by
a. Certain metals and electrical systems within the aircraft
b. Northerly turning error
c. The difference in location in the true north and magnetic north
d. The gravity of the moon
34. “Force is equal to the change in momentum per change in time. For a constant mass, force
equals mass times acceleration.”
a. Newtons first law
b. Newtons second law
c. Bernoulli’s principle
d. Newtons third law
35. “For every action, there is an equal and opposite reaction.”
a. Newtons first law
b. Newtons second law
c. Bernoulli’s principal
d. Newtons third law
36. “Every object persists in its state of rest for uniform motion in a straight line unless it is
compelled to change that state by forces impressed on it.”
a. Newtons first law
b. Newtons second law
c. Bernoulli’s principal
d. Newtons third law
37. Our atmosphere is made up of many layers. The layer from sea level to 20,000 ft.?
a. Mesosphere
b. Thermosphere
c. Troposphere
d. Stratosphere
38. True or False, the Coriolis force is created by the rotation of the earth?
39. Isobars that are close together indicate?
a. Large temperature changes
b. A steep moisture gradient
c. A steep wind gradient and strong winds prevail
d. A steep terrain
40. True or False, Hypoxia means “reduced oxygen”
41. A Terminal Aerodrome Forecast (TAF) is a weather report established for the ______ statute
mile radius around an airport.
a. 100
b. 50
c. 25
d. 5
Matching Questions – today we will be looking at clouds – Match the closest description – each answer
is only used once.
42.
43.
44.
45.
46.
47.
48.
49.
Cumulus______________
Cirrus ______________
Castellanus ___________
Stratus _______________
Alto__________________
Nimbus________________
Fracto_________________
Lenticularus_____________
A. Rain Bearing
B. Lens shaped, formed over mountains in strong winds
C. Ragged or broken
D. Heaped or piled clouds
E. Formed in layers
F. High also middle clouds existing at 5,000-20,000 ft
G. Common base with separate vertical development, castle-like
H. Ringlets, fibrous clouds, also high level clouds above 20,000 ft
50. The Wright brothers made history by being the first to demonstrate sustained flight of a heavierthan-air machine under the complete control of a pilot on this date?
a.
b.
c.
d.
December 3rd 1917
December 7th 1903
December 17th 1909
December 17th 1903
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Map questions based on using the Green Bay Sectional Aeronautical Chart provided. You will use the
Plotter and E6B Manual Mechanical Flight Computer that you brought with you to solve the following
problems worth 4 pts for each correct answer. The test proctor will assign each team equal map time.
51. Using the Green Bay Sectional Aeronautical chart – What does the large blue 23 figure northeast
of Boyceville Wisconsin and near the Chetek Wisconsin airport indicate?
You are planning to fly from the Boyceville airport to the Rusk County airport at a True Airspeed of
110 knots. Winds long your route are showing as 100 degrees at 13 knots on the weather reports.
52. What is your distance from Boyceville to the Rusk County Airport?
53. What Compass Heading (ignoring deviation) do you need to fly in order to go directly from
Boyceville to Rusk County Airport?
54. How long will it take you to fly from Boyceville to Rusk County Airport?
55. If your aircraft burns fuel at 8 gallons per hour, how many gallons will it take to fly from
Boyceville to the Rusk County Airport?
56. How long is the longest runway at Rusk County Airport in feet?
57. What is the Field Elevation of the Rusk County Airport?
58. What is the height in MSL of the tallest tower within 8 nautical miles of the Rusk County airport?
Thank you for your effort in “Time to Fly.” We hope that this helps students see some of the scientific
concepts used in the field of aviation. We wish you “Good Luck” in all your events at this competition.
1st Lt Jack Owen and Captain Mike Scott (CFII) –Civil Air Patrol - Eau Claire Composite WI-161