To find out how many square kilometers the oil spill will cover in 2 hours, we first need to determine the rate of coverage.
The oil spill covers 4 square kilometers in \( \frac{1}{4} \) of an hour. To find the rate of coverage per hour, we can scale this up:
\[ \text{Rate} = \frac{4 \text{ square kilometers}}{\frac{1}{4} \text{ hour}} = 4 \text{ square kilometers} \times 4 = 16 \text{ square kilometers per hour} \]
Now, we can calculate how much area it will cover in 2 hours:
\[ \text{Area covered in 2 hours} = \text{Rate} \times \text{Time} = 16 \text{ square kilometers per hour} \times 2 \text{ hours} = 32 \text{ square kilometers} \]
Thus, the oil spill will cover 32 square kilometers in 2 hours.