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Anya recorded the temperatures of four different smooth materials after they were placed under a heat lamp for thirty minutes.

\begin{tabular}{|l|l|}
\hline \multicolumn{1}{|c|}{ Material } & \multicolumn{1}{|c|}{ Temperature [tex]$\left({ }^{\circ} F \right)$[/tex]} \\
\hline W & 87 \\
\hline X & 99 \\
\hline Y & 75 \\
\hline Z & 105 \\
\hline
\end{tabular}

Which conclusion is best supported by the information in the chart?

A. Material W is less absorbent than material Z.
B. Material Y is the least reflective.
C. Material X is more reflective than material W.
D. Material Z is the least absorbent.

Sagot :

GinnyAnsweridn
To determine which conclusion is best supported by the information in the chart, let's break down each statement with respect to the temperatures recorded:

1. Material W is less absorbent than material Z.
- Absorbance relates to how much heat a material takes in. If a material has a higher temperature under the same conditions, it likely absorbs more heat.
- Material W: 87°F
- Material Z: 105°F
- Since material Z has a higher temperature than material W, material Z is more absorbent than material W.
- Therefore, this statement is false.

2. Material Y is the least reflective.
- Reflectiveness generally means the ability to reflect heat rather than absorb it. A material that reflects more heat will have a lower temperature.
- Material Y: 75°F
- Since material Y has the lowest temperature, it is more likely to reflect the most heat.
- Therefore, the statement that material Y is the least reflective is false (it is actually the most reflective).

3. Material X is more reflective than material W.
- Comparing the reflectiveness, a lower temperature indicates higher reflectiveness.
- Material X: 99°F
- Material W: 87°F
- Since material W has a lower temperature, material W is more reflective than material X.
- Therefore, this statement is false.

4. Material Z is the least absorbent.
- The least absorbent material would have the lowest temperature because it absorbs the least amount of heat.
- Material Z: 105°F
- Since material Z has the highest temperature, it is the most absorbent, not the least.
- Therefore, this statement is false.

After evaluating all the statements, the one that aligns correctly with the provided temperatures is:

Material Z is indeed the least absorbent.

Given the context and comparisons made, the answer to the question is clearly [tex]\(4\)[/tex].
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