Scale Drawings Flashcard

Front

What is a scale drawing?

Back

A scale drawing is a representation of an object or area that is proportionally reduced or enlarged to fit on a smaller or larger scale, allowing for accurate measurements and comparisons.

Front

How do you calculate the actual distance using a scale?

Back

To calculate the actual distance, multiply the distance on the scale drawing by the scale factor. For example, if the scale is 1 cm to 30 meters, and the distance on the drawing is 3 cm, the actual distance is 3 cm x 30 m/cm = 90 meters.

Front

What is the formula for calculating the perimeter of a rectangle?

Back

The perimeter P of a rectangle is calculated using the formula P = 2(length + width).

Front

If a scale is 1 inch to 5 miles, how do you find the actual distance between two points on a map?

Back

Multiply the distance in inches on the map by the scale factor. For example, if two cities are 3 inches apart, the actual distance is 3 inches x 5 miles/inch = 15 miles.

Front

What does a scale of 1:100 mean?

Back

A scale of 1:100 means that 1 unit on the model or drawing represents 100 units in reality.

Front

How do you convert a scale measurement to actual size?

Back

To convert a scale measurement to actual size, multiply the measurement by the scale's denominator. For example, if a model is 2 feet tall at a scale of 1:100, the actual height is 2 feet x 100 = 200 feet.

Front

What is the significance of scale in maps and blueprints?

Back

Scale is significant because it allows for accurate representation and measurement of distances and sizes in a manageable format.

Front

How do you determine the actual length of an object from a blueprint?

Back

To determine the actual length, multiply the length on the blueprint by the scale factor. For example, if the blueprint shows a length of 9 inches at a scale of 1 inch to 20 feet, the actual length is 9 inches x 20 feet/inch = 180 feet.

Front

What is the relationship between scale and real-world measurements?

Back

The relationship is that the scale provides a ratio that translates measurements on a drawing or map to actual distances or sizes in the real world.

Front

If a map scale indicates that 1/4 inch equals 10 miles, how many miles does 1 inch represent?

Back

1 inch represents 40 miles because if 1/4 inch = 10 miles, then 1 inch (which is 4 times 1/4 inch) = 4 x 10 miles = 40 miles.