Scale Drawing

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 paper, using a specific ratio or scale.

Front

What does the scale 1 in = 300 miles mean?

Back

It means that every 1 inch on the drawing represents 300 actual miles in reality.

Front

If a scale drawing shows a distance of 3 inches, how do you find the actual distance using the scale?

Back

Multiply the distance on the drawing (3 inches) by the scale factor (300 miles per inch): 3 in x 300 miles/in = 900 miles.

Front

What is a scale factor?

Back

A scale factor is a ratio that compares the dimensions of a model or drawing to the actual dimensions of the object.

Front

What does a scale factor of 1/2 indicate?

Back

A scale factor of 1/2 indicates a reduction, meaning the model is half the size of the actual object.

Front

How do you convert a measurement from a scale drawing to actual size?

Back

Multiply the measurement from the scale drawing by the scale factor to find the actual size.

Front

If a model is built at a scale of 5 in:25 ft, how do you find the actual size of a feature that is 1.5 inches wide?

Back

Use the scale to convert: 1.5 in x (25 ft / 5 in) = 7.5 ft.

Front

What is the actual length of a car if its scale drawing length is 3 cm and the scale is 1 cm:4 ft?

Back

The actual length is 3 cm x 4 ft/cm = 12 feet.

Front

What is the purpose of using scale drawings?

Back

Scale drawings help visualize large objects or areas in a manageable size while maintaining accurate proportions.

Front

What is the difference between enlargement and reduction in scale drawings?

Back

Enlargement increases the size of the drawing compared to the actual object, while reduction decreases the size.