A science student creates this table contrasting the four outer planets.

\begin{tabular}{|c|c|c|c|}
\hline
Jupiter & Saturn & Uranus & Neptune \\
\hline
Largest & Second largest & Third largest & Smallest \\
\hline
\begin{tabular}{l}
Second fastest \\
rotation
\end{tabular} & Fastest rotation & Slowest rotation & \begin{tabular}{l}
Third fastest \\
rotation
\end{tabular} \\
\hline
\begin{tabular}{l}
Hydrogen and \\
helium \\
atmosphere
\end{tabular} & \begin{tabular}{l}
Hydrogen and \\
helium \\
atmosphere
\end{tabular} & \begin{tabular}{l}
Methane \\
atmosphere
\end{tabular} & \begin{tabular}{l}
Methane \\
atmosphere
\end{tabular} \\
\hline
\end{tabular}

Where is the error in the student's table?

A. The planet sizes are switched.
B. The rotation speed of Uranus and Saturn are switched.
C. The rotation speed of Jupiter and Saturn are switched.
D. The atmospheric compositions are switched.



Answer :

Let's examine the table provided to identify any errors related to size, rotation speed, and atmospheric composition of the planets.

### 1. Size of Planets:
- Jupiter: Largest
- Saturn: Second largest
- Uranus: Third largest
- Neptune: Smallest

These rankings are correct as per the known data about the outer planets.

### 2. Rotation Speed:
- Jupiter: Second fastest rotation
- Saturn: Fastest rotation
- Uranus: Slowest rotation
- Neptune: Third fastest rotation

However, upon checking the facts:
- Jupiter is actually the fastest rotating planet.
- Saturn is the second fastest rotating planet.
- Uranus rotates slower than both Jupiter and Saturn.
- Neptune has a rotation speed ranking below Jupiter and Saturn but above Uranus.

So, the rotation speeds provided in the table are incorrect. Specifically:
- The rotation speed ranks of Jupiter and Saturn are switched.
- Uranus does indeed have one of the slowest rotation rates but the exact rank isn't accurate without fixing Jupiter and Saturn.

### 3. Atmospheric Composition:
- Jupiter: Hydrogen and helium atmosphere
- Saturn: Hydrogen and helium atmosphere
- Uranus: Methane atmosphere
- Neptune: Methane atmosphere

These atmospheric types are consistent with known compositions. No error here.

### Error Identification:
To identify the correct errors in the student's table:
- The size of planets is correct.
- The atmospheric composition is correct.
- The rotation speed of Jupiter and Saturn are switched.

### Correct Answer:
- The rotation speed of Jupiter and Saturn are switched.