Gr12 Math Lit: Ch 5.1 Scale

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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?

It remains accurate when the map is resized Signup and view all the answers

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

Multiply the measurement by the scale ratio Signup and view all the answers

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

Obtain real measurements of the area or object to be mapped Signup and view all the answers

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

One is expressed as a ratio and the other is represented graphically Signup and view all the answers

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

To suit the size of the map and the level of detail required Signup and view all the answers

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

To allow for accurate interpretation of distances and dimensions Signup and view all the answers

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

Measure the distance on the map, multiply by the 'real' part of the scale ratio, and then measure the distance using a ruler Signup and view all the answers

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

It becomes less accurate Signup and view all the answers

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

It remains accurate when the map is resized Signup and view all the answers

What is the first step in using a bar scale?

Measure the length of one segment of the bar Signup and view all the answers

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

To ensure accuracy in the scaled map 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?

The real distance Signup and view all the answers

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

The level of detail required Signup and view all the answers

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

The number scale becomes inaccurate. Signup and view all the answers

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

It remains accurate when the map is resized. Signup and view all the answers

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

Units Signup and view all the answers

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

To calculate the number of segments. 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?

The real distance is calculated. Signup and view all the answers

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

The level of detail required. Signup and view all the answers

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

It is simpler to calculate distances. Signup and view all the answers

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

Measure the distance on the map, measure the length of a segment, calculate the number of segments, multiply by the real-life distance. Signup and view all the answers