Criterion B Assessment (Acid Rain) Aim: Research question: Problem: Background information (science behind topic): Hypothesis (educated guess based on background info): Variables: - Independent variable (what you will change, units and HOW): Dependent variable (what you will measure, units and HOW): Controlled variables (what you will keep the same, units and HOW): How data will be collected: Materials/equipment (include amounts): Method (logical sequence): Safety: Bibliography (x3 sources minimum):