Question

special activity: hertzsprung - russell diagram constructed response
9 /10 points possible
written portion (+2): using the hertzsprung - russell diagram (h - r diagram), determine if the following statements made by each student is correct.
a. amanda: \all of the main sequence stars have high absolute brightness.\
b. brad: \barnards star and mira are similar in they both are the color red, but are different in absolute brightness.\
c. carl: \deneb is an extremely bright star, white in color, with a surface temperature of about 10,000 degrees fahrenheit.\
d. darlene: \betelgeuse is a giant, and therefore is much larger and more massive than barnards star, a small main - sequence star. barnards star will last much less than betelgeuse, since its mass is much less.\

1. art (+2): draw and label (name and group) four different stars.
2. color (+2): color the diagram, star (circles) accordingly, and add to your artwork.
3. reflection (+2) in 3 - 5 sentences, create your own statement based on the h - r diagram and support it with evidence. prepare to share with the class.
4. excellent (+2) reflect and share a thoughtful and accurate statement

Explanation:

a. Main - sequence stars vary in absolute brightness, not all have high absolute brightness.
b. Barnard's star and Mira can be compared on H - R diagram for color and absolute brightness.
c. Characteristics of Deneb can be verified on H - R diagram.
d. Larger stars like Betelgeuse are more massive and have shorter lifetimes compared to small main - sequence stars like Barnard's star.

Answer:

a. False
b. True
c. True
d. False