Astronomy Extension

Question 1

Recall the basic features of a Hertzsprung–Russell diagram

Answer 1

Scatterplot
X-axis: Temperature
Y-axis: Brightness

Question 2

Why can the distance to stars beyond 100 light years only be measured using spacecraft?

Answer 2

The Earth’s atmosphere make it difficult for telescopes to view and measure the distance of stellar objects of a tight angle, limiting our ability to accurately measure to 100 light years

Question 3

Recall the formula for Hubble’s Law

Answer 3

v = H_0 * d
where:
v = recessional veolcity (m/s)
H_0 = Hubble’s constant
d = proper distance (m)

Question 4

Recall the 7 spectral classes in descending order

Answer 4

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