# Swimming Australia Teacher Unit 2 Exam "Practical Biomechanics" by asctaACCREDITATION

## Unit 2 Exam - Practical Biomechnics

• Upwards
• Downwards
• Sideways
• Forwards

• Buoyancy
• Gravity
• Propulsion
• Resistance

• Buoyancy
• Gravity
• Propulsion
• Resistance

• True
• False

• True
• False

### A buoyant force is determined by measuring the ...?

• The weight of the water displaced by a swimmer
• The weight of the swimmer in the water
• The weight of one litre of water
• The amount of water displaced in litres

### If a swimmer took a deep breathe whilst floating on the surface of the water, which one of the following would increase?

• The gravitational force
• The bouyant force
• The centre of buoyancy
• The resistance forces

• Body fluids
• Muscle
• Fat
• Air

• Body fluids
• Muscle
• Fat
• Bone

### A swimmer can move the centre of gravity closer to the centre of buoyancy by...?

• Keeping the arms in the water and raising them above the head
• Stretching the legs out straight
• Taking a deep breathe of air
• Keeping the hands by the upper legs

• True
• False

### With a kickboard extended out in front, a learner is most likely to have their legs...?

• Float higher in the water
• Sink lower in the water
• Not change in position
• Freestyle kick with the knees straighter

### If the pathway of your hand through the water makes a sudden change in direction your hand speed will...?

• Move faster
• Slow down
• Not change speed at all
• Accelerate

### If your hand through the water makes a gradual change in direction your hand speed will...?

• Continue at the same speed or slow marginally
• Slow down dramatically
• Stop
• Increase dramatically

### Resistance is the name given to the type of forces that...?

• Slow a swimmer down
• Help a swimmer go faster
• Lift a swimmer higher in the water
• Give momentum for movement

• Frontal
• Surface
• Eddy
• Bernoulli

### Frontal resistance increases if a swimmer...?

• Lifts their arms out of the water
• Has their legs lower in the water
• Streamlines
• Slows down

### The correct sequence for recovery from a front float is...?

• Lift the head, scull down with the hands, bend the knees and place the feet on the pool floor and stand up
• Bend the knees, lift the head, scull down with the hands, place the feet on the floor of the pool, and stand up
• Scull down with the hands, lift the head, bend the knees and place the feet on the pool floor and stand up
• Lift the head, bend the knees, scull down with the hands and place the feet on the pool floor and stand up

### The correct sequence for recovery from a back float is...?

• Bend the knees, lift the head, scull the hands towards the feet, place the feet on the floor of the pool and stand up
• Lift the head, scull down with the hands, bend the knees and place the feet on the pool floor and stand up
• Scull down with the hands, lift the head, bend the knees and place the feet on the pool floor and stand up
• Lift the head, bend the knees, scull down with the hands and place the feet on the pool floor and stand up

### The first area of movement taught in the water away from the edge is usually...?

• Kicking
• Gliding
• Arms
• Stroke Timing

### When floating or gliding, a better body balance can be achieved by...?

• Moving slower through the water
• Positioning the arms and legs wider apart
• Not kicking

### It is important when practicing any kicking that...?

• All kicking is practised at a fast speed
• The kickboard is positioned forward of the swimmers head
• The face is out of the water
• The body position of the learner mimics that of a swimmer

• Freestyle
• Breaststroke
• Backstroke
• Butterfly

• Freestyle
• Backstroke
• Breaststroke
• Butterfly

• Freestyle
• Backstroke
• Breaststroke
• Butterfly

• Freestyle
• Breaststroke
• Backstroke
• Butterfly

• Freestyle
• Backstroke
• Breaststroke
• Butterfly

• Freestyle
• Breaststroke
• Backstroke
• Butterfly

• Freestyle
• Breaststroke
• Backstroke
• Butterfly

• True
• False

• True
• False

### As the forward speed of a swimmer increases, their...?

• Body lifts higher in the water
• Body gets lower in the water
• Body flattens out on the water
• Face looks down more

### Frontal resistance is evidenced by...?

• Swirling water around the feet of the swimmer
• A bow wave from the swimmer's hips
• The feet low in the water
• A bow wave from the front of the swimmer's head

• Freestyle
• Breaststroke
• Backstroke
• Butterfly

• Freestyle
• Breaststroke
• Backstroke
• Butterfly

### A swimmer may reduce surface friction by...?

• Wearing a stinger suit
• Wearing a swim cap
• Kicking harder

### Swimming can be improved by...?

• Decreasing the length of the arm stroke thus increasing the distance travelled per stroke
• Improving the grip on the water by fine tuning the angle of the hand in the water
• Increasing resistances

### Frontal resistance may increase if...?

• The legs are kept as much as possible within the line of the body
• The body stays near the surface of the water in a relatively horizontal position
• In Freestyle and Backstroke the body remains aligned and rolls along an axis down the middle of the body from head to feet
• The head is kept high

### Eddy resistance may increase if...?

• The feet are kept in a streamlined position near the surface of the water
• The legs are kept as much as possible within the line of the body
• The hips are low in the water
• Ensuring the knees do not bend more than necessary

### Surface friction may increase if...?

• An increased amount of clothing is worn
• Lightweight, body hugging swimsuits are worn
• Excess hair is shaved off (in elite swimmers at speed)
• A swim cap is worn

### Swimming aids should be used...?

• After weighing up the needs of the individual Student
• For the majority of any lesson
• Regardless of the likely benefit
• Every lesson

• True
• False

### When swimming aids are used they...?

• Provide too much confidence to beginners
• Must be used under close adult supervision at all times
• Increase the chance of drowning at a later time
• Should only be got out of storage immediately prior to use