The photograph shows cars parked in a street - Scottish Highers Human Biology - Question 9 - 2018
Question 9
The photograph shows cars parked in a street.
The judgement of distance depends on visual cues.
Explain how the following visual cues allow a person to judge how fa... show full transcript
Worked Solution & Example Answer:The photograph shows cars parked in a street - Scottish Highers Human Biology - Question 9 - 2018
Step 1
Size
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Answer
The size of objects plays a significant role in depth perception. Cars or objects that are further away appear smaller than those that are closer. This allows the observer to judge distance based on apparent size; if a car looks big, it is likely closer, whereas a smaller car is perceived to be further away.
Step 2
Superimposition
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Answer
Superimposition occurs when one object overlaps another. This cue can indicate distance; if a car is partially blocked by another object, the observer can infer that the obstructed car is further away. Hence, objects that are in front of others are perceived to be closer.
Step 3
State the term used for the ability of the brain to judge the distance of an object based on the different images received by each eye.
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Answer
The term for this ability is 'binocular disparity.'
Step 4
Calculate the missing distance for attempt 9.
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Answer
The missing distance for attempt 9 is calculated to be 16.
Step 5
Suggest a reason why the coin was randomly placed for each attempt.
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Answer
The coin was randomly placed to prevent the student from learning the position of the coin, which could bias the results. This ensures that each attempt provides a reliable random measure of distance.
Step 6
State another conclusion which can be drawn from the results.
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Another conclusion is that the results consistently show that the left eye is more accurate than the right eye in judging distance, and that using both eyes significantly improves accuracy.
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