What is an example of a scientific hypothesis?

What is an example of a scientific hypothesis?

• A. Cold water freezes faster than hot water in all situations.
• B. Ice melts slower when placed in a freezer than in room temperature.
• C. Hot water always freezes at the same rate as cold water.
• D. If ice cube trays filled with hot and cold liquid water are put in a freezer, the hot water will freeze faster than the cold water.

Answer: (D)

A scientific hypothesis is a testable prediction about how changing one variable affects another, typically written as an if-then statement. The idea that placing trays of hot and cold water in a freezer will cause the hot water to freeze faster than the cold water is a clean example because it specifies the variables (initial water temperature and time to freeze) and the condition (in a freezer) and makes a precise, testable prediction. You can design an experiment to measure which sample freezes first under identical conditions, and the result will support or refute the prediction. The other options lean on universal or absolute claims that are harder to test conclusively (for example, statements like “always” or “in all situations” or comparing conditions without a clear, falsifiable outcome), which makes them less suitable as hypotheses.

A scientific hypothesis is a testable prediction about how changing one variable affects another, typically written as an if-then statement. The idea that placing trays of hot and cold water in a freezer will cause the hot water to freeze faster than the cold water is a clean example because it specifies the variables (initial water temperature and time to freeze) and the condition (in a freezer) and makes a precise, testable prediction. You can design an experiment to measure which sample freezes first under identical conditions, and the result will support or refute the prediction. The other options lean on universal or absolute claims that are harder to test conclusively (for example, statements like “always” or “in all situations” or comparing conditions without a clear, falsifiable outcome), which makes them less suitable as hypotheses.