Question

the graph below shows the results of adding thermal energy to equal amounts of two materials, a and b. use the graph to answer questions 5-9. heating materials a and b graph with material a (blue) and material b (red) temperature over time 5) if we add thermal energy to materials a and b, which will heat up faster? a) material a b) material b c) neither material a or b

Explanation:

Step1: Analyze the graph's slope

The slope of the temperature - time graph represents the rate of temperature increase (heating rate). A steeper slope means a faster heating rate.
For Material A (blue line) and Material B (red line), we observe the slope in the heating phase (from \(t = 0\) until the peak). The blue line (Material A) has a steeper slope than the red line (Material B) in this phase. This means that for the same amount of time, Material A's temperature increases more than Material B's.

Step2: Determine the faster - heating material

Since the slope of Material A's temperature - time graph is steeper, it means that when thermal energy is added, Material A's temperature rises at a faster rate. So Material A heats up faster.

Answer:

a) Material A