QCM : Introduction to Basic Science Principles — 5 questions

Explication

Observation involves describing and noticing phenomena carefully, forming the basis for understanding. A hypothesis is a proposed explanation based on initial evidence that guides further investigation. They serve different roles: observation is about gathering data, while hypothesis is about explaining data to test ideas.

Explication

The key feature of the scientific method that ensures the reliability of results is controlling variables to test only one factor at a time. This prevents confounding factors from affecting the outcome and allows for accurate conclusions, as explicitly stated in the source.

Explication

The course content explicitly defines force as 'A push or pull that can change the motion of an object,' making option one the correct answer. The other options describe related but different concepts: energy transfer, Newton's second law formula, and friction, respectively.

Explication

Dmitri Mendeleev is credited with organizing elements into the periodic table, which is a fundamental framework in chemistry that helps understand atoms, molecules, and their relationships. The other options are notable scientists; John Dalton contributed to atomic theory, Marie Curie studied radioactivity, but Mendeleev is specifically known for the periodic table organization.

Explication

The course outline lists 'Scientific Method' as the second topic, immediately following 'Introduction to Science,' which is the first topic.