Question

which of the following statements concerning models are correct? i. models are always smaller than the actual systems. ii. models are often used by scientists to predict future events. iii. models can be made of systems that are not directly observed. iv. models are always made to scale. i and iii only i, ii, and iv ii, iii, and iv ii and iii only

Explanation:

• Statement I is incorrect as models can be larger than the actual systems (e.g., a model of a small micro - organism).
• Statement II is correct as models help scientists predict future events by representing real - world systems in a simplified way.
• Statement III is correct as models can represent unobservable systems like sub - atomic particles or future climate scenarios.
• Statement IV is incorrect as not all models are made to scale; some are conceptual and not geometrically accurate in terms of scale.

Answer:

D. II and III only