7th Grade: Scale Drawing & Scale Factor Flashcard

Front

What is a scale drawing?

Back

A scale drawing is a representation of an object that is proportional to its actual size, using a specific ratio or scale.

Tags

CCSS.7.G.A.1

Front

What is a scale factor?

Back

A scale factor is a number that scales, or multiplies, some quantity. It is the ratio of the dimensions of the drawing to the dimensions of the actual object.

Tags

CCSS.7.G.A.1

Front

If the scale factor is 1:2, what does it mean?

Back

It means that every 1 unit in the drawing represents 2 units in the actual object.

Tags

CCSS.7.G.A.1

Front

What does reduction mean in scale drawings?

Back

Reduction means that the scale drawing is smaller than the actual object, indicated by a scale factor less than 1.

Tags

CCSS.7.G.A.1

Front

What does enlargement mean in scale drawings?

Back

Enlargement means that the scale drawing is larger than the actual object, indicated by a scale factor greater than 1.

Tags

CCSS.7.G.A.1

Front

How do you find the actual length of an object from a scale drawing?

Back

Multiply the length in the scale drawing by the scale factor.

Tags

CCSS.7.G.A.1

Front

If a tree in a scale drawing is 2 inches tall and the scale is 1 inch:5 feet, what is the actual height of the tree?

Back

10 feet (2 inches x 5 feet/inch = 10 feet).

Tags

CCSS.7.G.A.1

Front

What is the formula to find the missing side in similar figures?

Back

The formula is: (length in drawing)/(length in actual) = (missing side in drawing)/(missing side in actual).

Tags

CCSS.7.G.A.1

Front

If a model is built to a scale of 1:20 and the model is 4 feet long, how long is the actual object?

Back

80 feet (4 feet x 20 = 80 feet).

Tags

CCSS.7.G.A.1

Front

What is the purpose of using scale drawings?

Back

Scale drawings are used to represent large objects in a manageable size, making it easier to visualize and understand their dimensions.

Tags

CCSS.7.G.A.1