Gr12 Math Lit: Ch 5.1 Scale

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Questions and Answers

What is the primary purpose of using scales in maps and plans?

  • To make the map more aesthetically pleasing
  • To create a more detailed map
  • To interpret distances and dimensions accurately from a scaled representation to real-life measurements (correct)
  • To make the map more compact

What does a number scale of 1:50 represent?

  • 50 units on the map represent 1 unit on the ground
  • 1 unit on the map is equal to 50 units on the ground
  • 1 unit on the ground represents 50 units on the map
  • 1 unit on the map represents 50 units on the ground (correct)

What is the disadvantage of using a number scale?

  • It becomes inaccurate if the map is resized (correct)
  • It is only used for small-scale maps
  • It is complex to use
  • It requires measuring the length of a segment

What is the advantage of using a bar scale?

<p>It remains accurate when the map is resized (C)</p> Signup and view all the answers

How do you calculate the real distance using a number scale?

<p>Multiply the measurement by the scale ratio (C)</p> Signup and view all the answers

What is the first step in drawing a scaled map from real dimensions?

<p>Obtain real measurements of the area or object to be mapped (C)</p> Signup and view all the answers

What is the primary difference between a number scale and a bar scale?

<p>One is expressed as a ratio and the other is represented graphically (D)</p> Signup and view all the answers

Why is it important to choose an appropriate scale when drawing a scaled map?

<p>To suit the size of the map and the level of detail required (D)</p> Signup and view all the answers

What is the role of a scale in a map or plan?

<p>To allow for accurate interpretation of distances and dimensions (A)</p> Signup and view all the answers

What is the correct sequence of steps to use a number scale?

<p>Measure the distance on the map, multiply by the 'real' part of the scale ratio, and then measure the distance using a ruler (D)</p> Signup and view all the answers

What happens to a number scale when the map is resized?

<p>It becomes less accurate (C)</p> Signup and view all the answers

What is the advantage of using a bar scale over a number scale?

<p>It remains accurate when the map is resized (A)</p> Signup and view all the answers

What is the first step in using a bar scale?

<p>Measure the length of one segment of the bar (B)</p> Signup and view all the answers

What is the purpose of obtaining real measurements when drawing a scaled map?

<p>To ensure accuracy in the scaled map (C)</p> Signup and view all the answers

What is the result of multiplying the measurement by the 'real' part of the scale ratio when using a number scale?

<p>The real distance (A)</p> Signup and view all the answers

What is the primary consideration when choosing a scale for a map or plan?

<p>The level of detail required (C)</p> Signup and view all the answers

What is the consequence of resizing a map with a number scale?

<p>The number scale becomes inaccurate. (B)</p> Signup and view all the answers

What is the primary reason for using a bar scale over a number scale in certain situations?

<p>It remains accurate when the map is resized. (C)</p> Signup and view all the answers

What is the unit of measurement used in a number scale ratio?

<p>Units (A)</p> Signup and view all the answers

What is the purpose of measuring the distance on the map in centimeters when using a bar scale?

<p>To calculate the number of segments. (C)</p> Signup and view all the answers

What is the result of multiplying the measurement by the 'real' part of the scale ratio when using a bar scale?

<p>The real distance is calculated. (D)</p> Signup and view all the answers

What is the primary consideration when choosing a scale for a map or plan?

<p>The level of detail required. (A)</p> Signup and view all the answers

What is the advantage of using a number scale over a bar scale in certain situations?

<p>It is simpler to calculate distances. (D)</p> Signup and view all the answers

What is the correct sequence of steps to use a bar scale?

<p>Measure the distance on the map, measure the length of a segment, calculate the number of segments, multiply by the real-life distance. (A)</p> Signup and view all the answers

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