Sketch, on the axes in Figure 1, the light curve for a typical type 1a supernova - AQA - A-Level Physics - Question 4 - 2017 - Paper 4
Question 4
Sketch, on the axes in Figure 1, the light curve for a typical type 1a supernova. Label the axes with suitable scales.
Figure 1
absolute magnitude
time/days
Worked Solution & Example Answer:Sketch, on the axes in Figure 1, the light curve for a typical type 1a supernova - AQA - A-Level Physics - Question 4 - 2017 - Paper 4
Step 1
Sketch the Light Curve
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Answer
Begin by drawing a graph on the axes provided in Figure 1.
Y-axis (Absolute Magnitude): Label this axis with values getting more negative as you move upward, ranging from -20 to -18 for the peak, noting that this scale is logarithmic.
X-axis (Time in Days): Label this axis with time, ranging from 0 to approximately 400 days.
Curve Representation: Sketch a curve that rises steeply, reaching the peak absolute magnitude between -18 and -20. After reaching the peak, the light curve should decrease gradually, illustrating the characteristic decline of a type 1a supernova light curve.
Step 2
Labeling the Axes
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Answer
Ensure both axes are clearly labeled. The Y-axis should be labeled as 'Absolute Magnitude' and the X-axis as 'Time (days)'. Include suitable markers on both axes for clearer interpretation.
Step 3
Peak of the Light Curve
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Answer
Draw a clear line to indicate the peak of the curve. This peak should be represented at the highest point on the graph, reflecting when the brightness of the supernova is at its maximum.
