No, not all square roots are irrational numbers. In fact, some square roots are rational.
The square root of a number is considered rational if it can be expressed as a fraction of two integers. For example, the square root of 4 is 2, which is a whole number and can be written as 2/1. Similarly, the square root of 1 is 1, which is also rational.
However, the square roots of most non-perfect squares, like 2 or 3, result in irrational numbers. The square root of 2 is approximately 1.41421356…, and it cannot be expressed as a fraction of two integers. Therefore, it is classified as an irrational number.
In summary, while some square roots yield rational numbers (like perfect squares), there are many that do not, making them irrational.