25.1.4—The use of standard candles to determine distances to galaxies

understand the use of standard candles to determine distances to galaxies.

Use —the use of standard candles to determine distances to galaxies to connect the rule to the data and decision in the question.

This matters because —the use of standard candles to determine distances to galaxies determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply —the use of standard candles to determine distances to galaxies to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: —The use of standard candles to determine distances to galaxies is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.