Flashcards on Practical Math: Geometry, Scales, and Plans
Practical Math: Geometry, Scales, & Plans Explained for Students
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Scale and Maps
7 cards
Card 1
Question: What does 'scale' on a map represent?
Answer: The relationship between a distance on the map (picture) and the actual distance in real life (actual).
Card 2
Question: What two things are being compared by a map scale?
Answer: Picture (map) distance : Actual (real life) distance.
Card 3
Question: What does a bar (linear) scale look like and what does it represent?
Answer: A visual line or bars divided into equal parts that represent fixed real distances.
Card 4
Question: List the basic steps to use a bar scale to find a real distance.
Answer: 1) Measure the length of the whole bar scale; 2) Note the actual distance the bar scale represents; 3) Measure the distance on the map; 4) Use proport
Card 5
Question: Write the proportion formula given for converting a map distance using a bar scale.
Answer: (Map distance ÷ length of bar scale) × (real value of bar scale) (used to find the real distance corresponding to the map measurement).
Card 6
Question: Give one advantage of using a bar scale.
Answer: Easy and quick to use, no complicated calculations needed, and it remains accurate when the map is resized.
Card 7
Question: Give one disadvantage of using a bar scale.
Answer: Requires careful measurement and can be inaccurate if measured poorly (wrong ruler use); you must have a bar scale present.