Which of the following statements is an example of a testable hypothesis?

Question

Iron rust formed under water looks nicer than other types.

Iron rust will form slower in colder water.

Why does iron rust so quickly under water?

Iron rust forms too quickly under water.

Answer 1

The statement that is an example of a testable hypothesis is:

"Iron rust will form slower in colder water."

This hypothesis can be tested through experimentation by measuring the rate of rust formation at different temperatures of water. The other statements are not testable hypotheses as they are either subjective, ask a question, or make unquantifiable claims.