Question

1. the diagram below shows equal masses of four different earth materials at different temperatures. which material has the greatest density? a) iron b) granite c) water d) dry air

Explanation:

Step1: Recall the density formula

Density formula is \(
ho=\frac{m}{V}\), where \(m\) is mass and \(V\) is volume.

Step2: Calculate density for granite

Given \(m = 10\space g\) and \(V=3.7\space mL\), then \(
ho_{granite}=\frac{10}{3.7}\approx2.70\space g/mL\)

Step3: Calculate density for iron

Given \(m = 10\space g\) and \(V = 1.3\space mL\), then \(
ho_{iron}=\frac{10}{1.3}\approx7.69\space g/mL\)

Step4: Calculate density for water

Given \(m = 10\space g\) and \(V = 10\space mL\), then \(
ho_{water}=\frac{10}{10}=1\space g/mL\)

Step5: Calculate density for dry air

Given \(m = 10\space g\) and \(V = 8300\space mL\), then \(
ho_{dry - air}=\frac{10}{8300}\approx0.0012\space g/mL\)

Answer:

A. iron