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The table shows the specific heat of four substances—brick, dry soil, paper, and water. If all four substances were exposed to sunlight for the same amount of time, which substance would heat up the slowest?

\begin{tabular}{|l|c|}
\hline
Substance & Specific Heat [tex]$\left(\frac{J}{g \cdot ^{\circ}C}\right)$[/tex] \\
\hline
brick & 0.9 \\
\hline
dry soil & 1.26 \\
\hline
paper & 1.336 \\
\hline
water & 4.18 \\
\hline
\end{tabular}

A. water
B. dry soil
C. paper
D. brick



Answer :

GinnyAnswer
To determine which substance heats up the slowest when exposed to sunlight for the same amount of time, we need to consider the concept of specific heat. Specific heat is the amount of energy required to raise the temperature of 1 kilogram of a substance by 1 degree Celsius. Substances with higher specific heat require more energy to increase in temperature and therefore heat up slower.

Let's analyze the specific heat values given in the table:

- Brick: 0.9 J/g°C
- Dry soil: 1.26 J/g°C
- Paper: 1.336 J/g°C
- Water: 4.18 J/g°C

From this table, water has the highest specific heat value of 4.18 J/g°C. This means water requires the most energy to raise its temperature by 1 degree Celsius compared to the other substances listed.

Therefore, water will heat up the slowest when all four substances are exposed to sunlight for the same amount of time.

The correct answer is:
A. water

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