4.04 Engineering Scales And Ratio

Why are scales useful in engineering?

• To ensure that models are built to a consistent size

• To increase the weight of the engineering drawings

• To make the drawings look more artistic

• To reduce the cost of printing large drawings

Tags

CCSS.7.G.A.1

To find the height and width of the car in metres, to which unit should the measurement be corrected?

• To the nearest inch

• To the nearest foot

• To the nearest centimetre

• To the nearest millimetre

Tags

CCSS.2.MD.A.3

What can the scale on a map be used to estimate?

• The population density of an area

• The area of locations on a map

• The number of people in a location

• The weather conditions of an area

Which of the following is an example of what you can estimate using the scale of a map?

• The distance between two cities

• The height of a building

• The depth of a river

• The GDP of a country

Tags

CCSS.5.G.A.2

If an average walking speed is estimated at 1.4 m/s, what additional calculation can be made using scale maps?

• The time taken to fly between points on a map

• The time taken to walk between points on a map

• The time taken to drive between points on a map

• The time taken to swim between points on a map

Tags

CCSS.7.RP.A.2C

What does a ratio show in terms of quantity distribution?

• A) A ratio shows the difference between two quantities.

• B) A ratio shows how a quantity can be shared into 2 or more pieces.

• C) A ratio shows the sum of two quantities.

• D) A ratio shows the division of a quantity by a single number.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

How can you identify a ratio in a given context?

• A) By the '+' symbol between the numbers.

• B) By the '-' symbol between the numbers.

• C) By the ':' symbol between the numbers.

• D) By the '=' symbol between the numbers.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

What is the ratio used to make the colour 'pure pink' according to the example?

• A) 2 : 1

• B) 1 : 2

• C) 1 : 1

• D) 1 : 3

A block of wood is to be cut into 3 pieces in the ratio 4 : 6 : 5. If the piece of wood is 3 m long, how long is each piece when cut?

• 0.8 m, 1.2 m, 1 m

• 0.6 m, 0.9 m, 0.75 m

• 1.2 m, 1.8 m, 1.5 m

• 0.4 m, 0.6 m, 0.5 m

What does a 1:100 scale mean when used in a drawing?

• 1 centimeter on the drawing represents 100 meters in real life

• 1 meter on the drawing represents 100 centimeters in real life

• 1 inch on the drawing equals 100 feet in real life

• 1 foot on the drawing equals 100 inches in real life

Tags

CCSS.7.G.A.1