Shared Flashcard Set

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Level 2 exam ski Prep
Flashcards covering the PSIA Tech manual and Core Concepts +
153
Other
Not Applicable
07/29/2016

Additional Other Flashcards

 


 

Cards

Term
Skiers responsibility code #1: Always stay . . .
Definition
Always stay in control, and be able to stop or avoid other people or objects.
Term
Skiers responsibility code #2: People ahead . . .
Definition
People ahead of you have the right of way. It is your responsibility to avoid them.
Term
Skiers responsibility code #3: You must not stop . . .
Definition
You must not stop where you obstruct a trail, or are not visible from above.
Term
Skiers responsibility code #4: Whenever starting . . .
Definition
Whenever starting downhill or merging into a trail look uphill and yield to others.
Term
Skiers responsibility code #5: Always use . . .
Definition
Always use devices to help prevent runaway equipment.
Term
Skiers responsibility code #6: Observe all . . .
Definition
Observe all posted signs and warnings Keep off closed trails and out of closed areas.
Term
The Skills concept serves as the technical model of American Ski Instruction. It is based on the knowledge that three skills are integral to all turns, and they are essential for maintaining balance. What are the three skills?
Definition
Rotational control, edge control, and pressure control.
Term
This skill refers to turning the skis about the vertical axis of the body. Skiers use this action to affect the directions their skis point.
Definition
Rotational Control
Term
This skill refers to tipping the skis relative to the length or longitudinal axis of the skis. Skiers use this action to increase or decrease the ski-to-snow angle.
Definition
Edge control
Term
This skill relates to managing forces acting on the skis, transfer pressure from one ski to the other, and adjust the overall magnitude of the force acting on the skis.
Definition
Pressure control
Term
__________ refers to the essential actions of the skis and the basic body movements that are present in all skiing, regardless of terrain, snow conditions, pitch of the slope, and speed of decent.
Definition
Mechanics
Term
The _________ refers to the way skiers move, or the methods they use to apply the mechanics of skiing. Different techniques provide movement options for how skiers affect or react to the action of the skis on the snow.
Definition
technique
Term
The strategic choices skiers make in order to achieve a goal.
Definition
Tactics
Term
It is said that he helped revolutionize the alpine skiing world, especially in America, with his teaching techniques and is credited with the innovation of “aerials.” Also known as the father of free style skiing.
Definition
Stein Eriksen

SteinEriksenSkifilms.com
Term
The ability of a skier to control the direction the skis point (toward the left, right, or straight ahead).
Definition
Rotational control

PSIA Alpine technical Manual pg. 17
Term
What control is used to turn skis?
Definition
Rotational Control
Term
What control is used to tip skis?
Definition
Edge control
Term
What control is used to create and manage the forces acting on skis?
Definition
Pressure Control
Term
Rotational control originates from _________ locations within the body.
Definition
Different
Term
Rotational input changes the direction the skis _______ ?
Definition
Point
Term
Defined as movement of the lower body to affect the direction the skis point.
Definition
Leg rotation
Term
Leg rotation includes what elements of rotation?
Definition

Elements of rotation from the femur in the hip socket and lower leg(below the knee) rotation.

 

 

 

 

pg. 18 PSIA Alpine Technical Manual 2014

 

Term
What is required to make rotational action effective?
Definition
The rotational action of the legs requires a strong ("stable" or "quiet")upper body to turn against.
Term
The acronym DIRT.
Definition
Duration, intensity, rate, and timing.
Term
What is the most versatile, and, therefore, most effective source of rotational input in most skiing applications?
Definition

Leg rotation

 

 

pg. 18 PSIA Alpine Technical Manual 2014

Term
This rotation describes the movement when the upper body turns in one direction as the lower body (legs) turn in the opposite direction.
Definition
Counter rotation
Term
What rotation is the most effective in situations requiring immediate, strong rotational input to the skis.
Definition
Counter rotation
Term
What rotation can be described as an instant but short lived source of rotational input?
Definition
Counter rotation
Term
What rotation is most effective in short turns?
Definition
Counter rotation
Term
What rotation is useful when skis are very light, either on or off the snow?
Definition
Counter rotation
Term
Why is a cambered ski a rougher ride in chopped up snow?
Definition
A cambered ski is a rougher ride in chopped up snow because the tip doesn't float on top like a rockered ski, it wants and will cut through.
Term
What is camber?
Definition
This is the traditional profile for skis and snowboards. Camber is a slight upward curve in the middle of a ski or board, with the contact points - where an unweighted ski or board contacts the snow - close to the ends. Camber requires more precise turn initiation and offers superb precision with plenty of power on groomed terrain and harder snow. The rider's weight puts an even and concentrated pressure on the edge from tip to tail, resulting in increased edgehold and better "pop". Racers and high level park riders often prefer camber.
Term
what is rocker?
Definition
Rocker (also called reverse-camber) is just as it sounds – camber turned upside down. All skis and snowboards, rockered or cambered, when put on edge and weighted in a turn achieve reverse-camber. Cambered skis and boards produce more pressure on the snow at the tip and tail since they have to flex further to achieve this curve. The term rocker is borrowed from watersports where rocker is common. Rocker skis and snowboards offer superior float in the soft snow and increased ease of turn initiation with less chance of "catching" an edge. As skis in general get wider, rocker helps keep the new shapes maneuverable for a wider range of skiers. Wide ski and board shapes designed primarily for powder are often rockered.
Term
What is a flat ski?
Definition
Flat is often found between the tip and the tail of the ski/snowboard. Flat means flat – if you lay the ski or board on a table with no weight on it, there won’t be any space between the base and the table. Completely flat technology is more common with snowboards than with skis, and it is much more common to see skis that are almost flat underfoot with rocker in the tip and sometimes tail. Flat makes easy transitions, with better edge grip than rocker and better maneuverability than camber.
Term
Explain your own ski construction, mine is a RTM 84 Volkyl ski.
Definition
The TRM 84, 84-mm wide flagship of the RTM series is built to be Volkl's highest-performing, most versatile frontside/all-mountain ski (except for perhaps the carbon-rich, premium-priced V-Werks version of it). It gets Volkl's most powerful and precise XTD construction and two sheets of Titanal for grippy, damp performance at speed. Binding options include a 14 or 12 DIN. Hardpack is its natural habitat, but its 84-mm width gives it a measure of soft-snow versatility. It's part of the seven-model RTM ("Ride the Mountain") series of frontside, all-conditions skis - the all-mountain heart of the Volkl collection. Waist widths range from 84 mm down to 73 mm, with performance and price decreasing along with width. Higher end models (the 84, 81, 80 and 77) are subtly rockered from tip to tail for soft snow performance. Lower end models (75 IS, 75, and 73) get tip and tail rocker (with camber underfoot) for easy pivoting and skidding and are generally more forgiving and groomer oriented. The RTM collection features Volkl's XTD constructions, which are built with extra mass stacked over the edges for extra stability and edge bite. In lower-end RTM models, these XTD rails decrease in size and mass to give those skis more forgiving performance. All but the value-priced RTM 73 have wood cores. All are sold with bindings.
Term

What does anticipation in skiing refer to?

 

 

Definition
Anticipation describes a position, or anticipatory movement in preparation for turning, in which the upper body actively turns to face down the hill rather than across the hill in the direction the skis are pointing. Or the skis can continue to actively turn across the hill as the upper body remains facing down the hill, with the skier in an anticipated position. These movements create counter. Pg.19
Term
Anticipation is?
Definition
* A preparatory move that transfers strong rotational input to the skis when the edges are released.

*Commonly used in short-radius turns with a blocking pole plant to help stabilize upper body. Pg.19
Term
If upper body rotation is typically an inefficient movement in which the upper body turns first, followed by the legs turning in the same direction. Inexperienced skiers commonly use this type of rotational movement. The upper body produces all of the rotational input and the legs simply follow until they stop. Question: When would a person need to use upper-body rotation?
Definition
A skier may use upper-body rotation effectively for tactical purposes, such as skiing heavy or wind-affected snow. In wind-crusted conditions, where it is difficult to release the sis from the snow, upper-body rotation may be used to generate the initial rotational input. Upper body rotation is: Generally not a preferred method for turning the skis, Used most often at turn initiation, most effective as a tactical source of rotational input. Pg. 20
Term
What refers to the rotational action of the skis relative to the surface of the snow?
Definition
Turning. It is the muscular input used to change the direction the skis point. This term, as well as "turn," is also used to describe a skiers curved path of decent, or change in direction of travel. Pg. 20
Term
What is a skier's curved path of decent, or change in direction of travel?
Definition
A turn. Pg. 20
Term
What does steering refer to?
Definition
Steering refers to actively directing the skis along the intended arc by turning (using muscular action) an edged ski (using the edge ski design). The rotational component of steering combines with forward movement of the skis and at least a minimal degree of edge angle, causing the skis to flow the curve path of a turn. Commonly referred to as guiding, these terms describe the action of the skis resulting from a blend of tipping the skis while turning the legs. Pg. 20
Term
Edge angle causes what?
Definition
Edge angle causes the skis to follow the curved path of a turn. Pg. 20
Term
What is pivoting?
Definition
Pivoting refers to rotating a ski about an axis perpendicular to the surface of the snow.
Term
What is a pivot point?
Definition
The pivot point is generally at the center if the skis, pivoting about a vertical axis of the body. pivoting can also occur about the tips or the tail of the skis. Pg.20
Term
What is a pivot slip?
Definition
A pivot slip is a maneuver in which a descending skier quickly pivots the skis to slip sideways while continuing to travel in the same direction as before. Pg. 21
Term
What terms define the resulting ski performance?
Definition
Turning, Steering, Pivoting. Pg. 21
Term
When rotational movements of the body are transmitted effectively to the skis . . .
Definition
the rotation occurs about the vertical axis of the body and balance is not disturbed. Pg. 21
Term
Where should the skis rotate under normal circumstances?
Definition
It is important that the skis rotate around an axis near the center of the skis. A skier may choose a tactical application where the skis rotate about the tips and tails, however this will compromise performance and balance. Pg. 21
Term
What is rotational balance?
Definition
Rotational balance describes the relationship of the body parts as they move relative to each other. Rotating on part of the body with respect to another alters the biomechanical alignment of joints and muscles, and can greatly affect the body's ability to move efficiently and maintain balance. Pg. 22
Term
What is Edge control?
Definition
Edge control is the ability to tip the skis onto its edge and adjust the angle between the base of the ski and the snow. Pg.22
Term
Edge control has a significant impact on both ________ and ______________?
Definition
Speed and direction of travel. Pg. 22
Term
A low edge angle results from?
Definition
Tipping the ski slightly on edge. Pg. 22
Term
A high edge angle results when the ski is tipped . . . ?
Definition
more on edge, increasing the angle between the base of the ski and the snow. Pg. 22
Term
Effective edge control involves what?
Definition
Using only the amount of edge angle necessary to accurately affect the path of the ski through a turn, promoting a gliding action of the skis. Pg. 22
Term
Inclination and ________________ are terms that are commonly used to describe body movements relative to the edge-control skill.
Definition
Angulation
Term
What is Inclination?
Definition
Inclination occurs when the skier deviates from a vertical position. In skiing, inclination is the general term for any lateral movement of a skier toward the inside of a turn. Some degree of inclination is always present in order to balance against the forces in a turn.
Term
The amount a skier inclines depends on the . . .
Definition
magnitude of force, which is influenced by edge angle, turn radius, pitch of the hill, snow condition, and speed of decent. Pg. 22
Term
This term refers to the movements that create angles between body parts.
Definition
Angulation
Term
What two type of angulation are commonly used in skiing?
Definition
Hip angulation and knee angulation.
Term
[image] What type of angulation is this?
Definition
Knee Angulation
Term
[image]
Definition
Hip Angulation
Term
What kind of angulation refers to the angle created at the hip joint.
Definition
Hip angulation!
Term
What kind of angulation can occur by tilting the pelvis?
Definition
Hip Angulation
Term
Hip angulation refers to what angle?
Definition
The angle created at the hip joint.
Term
The greatest degree of hip angulation comes from a combination of . . .
Definition
leg rotation, abduction, and adduction of the femurs and torso flexion, primarily at the hip joint.
Term
Leg rotation at the hop joint creates a separation between the . . .
Definition
upper and lower body.
Term
Explain what a separation between the upper an lower body does for your alignment.
Definition
this allows the upper body to remain more upright, or bend toward the outside ski, as the lower body tips to the inside of the turn. The combination of movements creates strong, stable alignment. It allows a skier to adjust edge angles maintaining balance toward the outside ski as forces increase in a turn.
Term
Hip angulation is most apparent through what phases of a turn?
Definition
shaping and finish phase.
Term
What is knee angulation?
Definition
Knee angulation refers to the angles created at the knee joint.
Term
Does the knee joint have lateral movement?
Definition
The knee joint has little lateral movement, especially when the leg is straight.
Term
Knee angulation is mostly a result of what?
Definition
Knee angulation is mostly the result of lateral and rotational motion of the leg combined with the bending the knee joint.
Term
Is knee angulation mostly present in long or short turns?
Definition
Short turns. Where forces are not long-lasting, or in instances when greater edge angles are required at slower speeds. pg. 23
Term
As forces increase due to greater speed, what can hip angulation be used for?
Definition
Hip angulation keeps the body in stronger alignment, although slight adjustments in knee angulation can be used to fine-tune edge angle.
Term
What is banking?
Definition
Banking describes movement of a relatively straight body leaning toward the inside of a turn. Typically, with insufficient pressure on the outside ski, the edge cannot grip the snow effectively, and the ski slips or slides. Pg. 23
Term
The movements a skier chooses to use to edge the skis depends upon
Definition
experience level, desired turn shape, pitch of hill, terrain, snow condition, speed of decent, and desired action of the skis. Pg. 23
Term
Skis are designed to turn when?
Definition
They are on edge. Pg. 24
Term
What is sliding?
Definition
Sliding is the forward travel of a flat ski as demonstrated in a straight run down a slope.
Term
What kind of path does a sliding ski leave in the snow?
Definition
A straight path as wide s the ski's width. Subtle edge angel adjustments may be necessary to keep the skis flat on the snow. Pg. 24
Term
In which direction do flat skis travel?
Definition
Straight ahead. Pg. 24
Term
What is slipping?
Definition
Slipping is also known as side slipping, refers to the action of the skis as they travel in a direction sideways to the length of the ski.
Term
Where can slipping action occur?
Definition
Straight down the hill or in a forward or backward side slip in which the skis slip sideways whiled traveling diagonally down a hill.
Term
What does the edge angle do during a side slip?
Definition
The edge angle adjusts the speed of decent without creating a turning force. Pg. 24
Term
During a side slip, a higher edge angle does what?
Definition
A higher edge angle slows the decent, while a lower edge angles allow speed to increase. Pg. 24
Term
The degree in which a skier banks or angulates is a function of what?
Definition
The degree in which a skier banks or angulates is a function of balance relative to the angle of the skis. Pg. 24
Term
Slipping will leave a path on the snow that is as wide as what?
Definition
The length of the skis. Pg. 24
Term
The function of the edge angle is to slow or increase the speed of decent with out what?
Definition
Creating a turning force. Pg. 24
Term
Inclination is required to do what?
Definition
Balance on an edged ski. Pg. 24
Term
What is skidding?
Definition
Skidding blends forward and sideways action of the skis. Pg. 24
Term
What is the most common interaction between the skis and the snow?
Definition
Skidding Pg. 24
Term
What kind of path does skiing leave in the snow?
Definition
Skidding may leave either a wide path in the snow or a very narrow path, depending on the degree of sideways travel through the turn. Pg. 24
Term
When skidding what is similar to slipping.
Definition
Sideways travel. Pg. 24
Term
When skidding what is similar to carving?
Definition
The skis moving forward along their length and having only a small amount of sideways travel.
Term
Edge angle contributes to the shape of the turn affecting what?
Definition
The skier's speed of decent. Pg. 24
Term
What is carving?
Definition
Carving refers to the action of an edged ski traveling forward along the length of the ski with very minimal to no sideways travel. Pg. 26
Term
Explain what a high edge angle allows when carving?
Definition
A high edge angle allows the bend of the ski to create the arc of the turn, as the tail follows in the path cut by the tip.
Term
Explain inclination in reference to carving.
Definition
As the turn develops, the skier increases inclination (angulation) to maintain balance wit the forces that build, and to keep the ski carving through the snow.
Term
What type of track does a carving ski leave in the snow?
Definition
A very narrow track.
Term
Explain the term "arcing."
Definition
The term arcing is used to describe the action of the tail following precisely in the path cut by the tip.
Term
What is the function of the edge angle?
Definition
The function of the edge angle is to access the turning force (centripetal) and minimize the braking force (friction). Pg. 26
Term
What is the arc of the turn created by?
Definition
The design of the ski? Pg. 26
Term
Higher edge angles and greater degrees of inclination (angulation) will be present with greater ________ and _____?
Definition
Speeds and forces. Pg. 26
Term
Any lateral movement a skier uses to increase or decrease the angle if the skis on the snow affects _______?
Definition
Balance. Pg 26
Term
If a skier moves too far to the inside of a turn and the corresponding edge angles are too high, what will happen?
Definition
The skis will tend to go straight and not continue in a curved path, and /or the skier will fall onto his or her hip. Pg. 27
Term
If a skier does not move far enough to the inside of a turn and the corresponding edge angles are too low, what happens?
Definition
The skis won't hold their intended path; they will slip or skid sideways, compromising balance. Pg. 27
Term
Pressure control requires movements to manipulate what?
Definition
Forces. Pg. 27
Term
What are the three distinct functions of pressure control?
Definition
1. To control the distribution of pressure from the tip of the ski to the tail. 2. Control the distribution of pressure from one ski to the other. 3. Control the magnitude of pressure acting in the base or edge of the skis. Pg. 27
Term
Skiers have primarily three means of distributing pressure along the length of the ski, all that require a forward or backward adjustment between the skier's center of mass and the base of support. What are the three means?
Definition
1. A skier may move the BOS forward or backward relative to the BOS. 2. Move the CM forward or backward relative to the BOS. Both actions produce the same relult, adjusting pressure forward and backward on the skis. 3. Move the COM and BOS in opposite directions, allowing for a quicker adjustment in pressure along the skis. Pg. 27
Term
Fore and aft movement of the CM is most effective when it originates and is controlled by flexing and extending what?
Definition
The ankles. Pg. 27
Term
Flexing or closing the the ankle joints can move the CM in which way?
Definition
Forward relative to the feet. Pg 27
Term
Extending or opening the ankle joints can move the CM back relative to the feet, move pressure where?
Definition
To the waist or tail of the ski. Pg. 28
Term
The for and aft adjustment of pressure should be controlled with the range of motion in what joint first?
Definition
Ankles Pg. 28
Term
Flexing the knee joint alone moves the CM which way?
Definition
Backwards. Pg. 28
Term
Flexing the hip joint alone moves the CM which way?
Definition
Forward. Pg. 28
Term
Extending at the hip joint moves the CM which way?
Definition
Backward. Pg. 28
Term
Effectively adjusting the base of support involves shifting the position of the feet forward or backward underneath the what?
Definition
Center of mass. Pg. 28
Term
Flexing and extending the ankles is the primary movement used to move what?
Definition
The BOS, Base of support.
Term
Ankle flexion can be used to pull the feet backward, underneath the body, this moves pressure which way?
Definition
Forward Pg. 28
Term
Ankle extension can be used to push the feet forward, moving pressure toward which way?
Definition
Toward the back of the ski. Pg 28
Term
In a combination movement, the skier shifts the CM and BOS in opposite directions when?
Definition
At the same time. Redistribution of pressure along the ski happens more quickly.
Term
Pressure on the outside ski controls the ________ of the turn?
Definition
Arc Pg. 28
Term
A ski that is farthest from the center of the turn's circle is the _________ ski.
Definition
Outside
Term
Th ski closest to the center of the turn's circle is the __________ ski.
Definition
Inside
Term
Redistribution of pressure from ski to ski requires releasing pressure from the old outside ski establish pressure on the new outside ski. This cna be done in the following way . . .
Definition
1. Flexion if Outside leg with Extension of New outside leg.
2. Extension of both legs.
3. Flexion of both legs.
Pg. 30
Term
Up unweighting is what?
Definition
A quick extension of the legs produces a momentary reduction in pressure when the skier's CM slows or reaches the top of its movement.
Term
Down Unweighting is what?
Definition
A quick flexion of the legs produces a monetary reduction of pressure as the skier;s center of mass drops.Pressure returns as the CM reaches the bottom of its movement. Down weighting is used to lighten pressure.
Term
What is a retraction movement?
Definition
Actively pulling up (lifting) the legs can lighten the connection between the skis and the snow, momentarily reducing pressure.
Term
In what ways can a retraction movement be used?
Definition
To clear an obstacle. Pull skis out of heavy snow. Facilitate transition in dynamic short-radius turns on steep terrain.
Term
What is absorption in skiing?
Definition
Allowing the muscles to relax and give in to the forces pushing on the skis creates a momentary reduction in forces.
Term
The rate of flexion occurs more slowly with absorption rather than _________ and _________.
Definition
Unweighting and retraction.
Term
Absorption is used to regulate pressure over varied terrain such as what?
Definition
Round bumps or rolls.
Term
A skier makes adjustments to increase, decrease, or maintain pressure on the ski by adjusting their stance to remain in ______?
Definition
Balance
Term
In skiing the forces that act upon a skier are _____________ and ____________.
Definition
Gravity and Enertia.
Term
Equilibrium denotes opposing forces are in a state of ______________.
Definition
Equilibrium. Pg. 33
Term
The forces that act on the skis are ___________ and __________.
Definition
Centripetal and friction. Pg. 33
Term
Force of Tension = Force of Centripetal. Ft = Fc.
Definition
Ft can equal any force that causes an object to go into centripetal motion. Ex. Centripetal force on the sun to orbit is gravity.
Term
Centrifugal force means a center fleeing force or ________________.
Definition
A force directed away from the center.
Term
A body in balance is in a state of _____________?
Definition
Equilibrium
Term
An athletic stance is defined by . . .
Definition
the ability of the athlete to move in any direction at any time.
Term
In an athletic stance, how should the feet be positioned?
Definition
The feet are approximately hip-width apart to provide a BOS.
Term
In athletic stance all major joints are _______?
Definition
Flexed.
Term
In an athletic stance, weight and balance is toward . . .
Definition
the balls of the feet.
Term
In an athletic stance the arms are ...
Definition
Raised slightly above the waist, with the elbows just in front of the body and the hands positioned slightly wider that the elbows.
Term
In an athletic stance the pelvis is . . .
Definition
neutral (with the lower back neither arched nor the tailbone tucked.)
Term
In an athletic stance the head . . .
Definition
is up with vision forward.
Term
What is the goal of an athletic stance in skiing?
Definition
To align the body to have maiximum access to the three basic skills, while maintaining balanced relationship between the CM and the BOS.
Term
The basic stance for a skier includes ...
Definition
Flexion of the ankles, knees, hips, and spine.
Term
From a side view, the slant of the lower leg is parallel or nearly parallel to the slant of the ___ ____.
Definition
Upper body.
Term
Balance is an outcome of?
Definition
Effective movement.
Term
What is the Skills Concept?
Definition
The technical model of American Ski Instruction. It is based on the knowledge that three skills - rotational control, edge control, and pressure control - are integral to all turns, and essential for maintaining balance.
Term
What is the fall line?
Definition
A ball rolling down a hill, or a ski without a skier, will seek the fall line, referring to the path of least resistance down a hill.
Term
What is the Apex when describing turn shape?
Definition
The apex is the place in the turn where the skis point straight down the fall line. This is approximately at the midpoint of the turns arc. Apex is also used to indicate the peak of forces in a turn.
Term
The curvature of a ski is know as its ________?
Definition
Sidecut
Term
Three phases of a turn ____ _____ ____.
Definition
Initiation, shaping, and finish.
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