Question

When shopping in a supermarket, which of the following are SI units that you might use, and which are non-SI units you may see on product packages?

a) SI Units: Kilograms and Meters; Non-SI Units: Pounds and Inches
b) SI Units: Liters and Grams; Non-SI Units: Cups and Ounces
c) SI Units: Fahrenheit and Miles; Non-SI Units: Celsius and Kilometers
d) SI Units: Yards and Pints; Non-SI Units: Meters and Quarts

Answer 1

In a supermarket, SI units include Kilograms and Meters, and non-SI units include Pounds and Inches. Option (a) is the correct answer. Conversion factors can relate Imperial units to SI units.

Step-by-step explanation:

When shopping in a supermarket, the SI units that you might use are Kilograms and Meters, and the non-SI units you may see on product packages are Pounds and Inches. This means that the correct answer is option (a): SI Units: Kilograms and Meters; Non-SI Units: Pounds and Inches. SI units are metric and values can be calculated by factors of 10, with prefixes to adjust the scale appropriately. For example, liters is a volume unit derived from the meter (cubic meter), and kilograms is the unit for mass.

The Imperial or English units such as pounds and inches are used primarily in the United States, while SI units are used worldwide and are preferred in scientific communication. It's important to note that non-SI units can be tied to SI units through conversion factors. For instance, 1 pound is equivalent to 0.453592 kilograms and 1 inch is equivalent to 0.0254 meters.