Question

a(n___ rarely changes over time and is usually expressed as a mathematical equa
○ scientific theory
○ scientific method
○ experiment
○ scientific law

Explanation:

• A scientific theory is an explanation of natural phenomena that can be revised with new evidence, so it's not the answer.
• The scientific method is a process for experimentation, not a statement with a mathematical equation, so it's incorrect.
• An experiment is a procedure to test hypotheses, not a statement with a mathematical equation, so it's wrong.
• A scientific law is a statement that describes a natural phenomenon, rarely changes over time, and is often expressed as a mathematical equation (e.g., Newton's laws, the law of gravity).

Answer:

D. scientific law