Question

which tool is most appropriate for measuring the mass of a small feather?
○ pan balance
○ meter stick
○ graduated cylinder
○ digital scale

question 4 (multiple choice worth 2 points)
(12.04 lc)
which amount is greater than 12 grams?
○ 1,200 milligrams
○ 1,300 milligrams
○ 12,000 milligrams
○ 13,000 milligrams

Explanation:

First Question (Measuring mass of a small feather)

• A pan balance is used for comparing masses, not ideal for small, light objects like a feather.
• A meter stick measures length, not mass.
• A graduated cylinder measures volume of liquids.
• A digital scale can measure small masses with precision, suitable for a small feather.

Step1: Recall gram - milligram conversion

We know that \(1\) gram \( = 1000\) milligrams. So to convert grams to milligrams, we use the formula \(m_{mg}=m_{g}\times1000\). For \(12\) grams, converting to milligrams: \(12\times1000 = 12000\) milligrams.

Step2: Compare each option with 12000 milligrams

• \(1200\) milligrams: \(1200<12000\)
• \(1300\) milligrams: \(1300<12000\)
• \(12000\) milligrams: \(12000 = 12000\) (not greater)
• \(13000\) milligrams: \(13000>12000\)

Answer:

Digital scale

Second Question (Which amount is greater than 12 grams)