Download Chapter 30 Graphing skills worksheet

Name ______________________________ Class __________________ Date __________________
Skills Worksheet
Graphing Skills – Chapter 30
Line Graphs and the Surface Temperature of Stars
Astronomers can determine the temperature of individual stars based on their
color. The temperature of the star is higher as you move across the spectrum from
red to blue. The data that shows this is found in the table below.
Surface Temperature of Stars (C)
Color
red
less than 3,500
orange
3,500-5,000
yellow
5,000-6000
Yellow-white
6,000-7500
white
7,500-10,000
Blue-white
10,000-30,000
blue
Above 30,000
This data can be plotted using a line graph to create a visual display. The line
graph that follows was constructed using this data. The x axis was chosen for the
spectrum so the graph will show the increase in temperature as you move across
the spectrum from red to blue. A choice that was made was to plot the low end of
each temperature range on the y axis. The arbitrary value of 3000°C was chosen
for red.
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Earth Science
27
Stars, Galaxies and the Universe
Name ______________________________ Class __________________ Date __________________
Graphing Skills continued
PRACTICE
Use the line graph on the previous page to answer the following questions.
1. What is the low end of the range of surface temperatures for white stars?
_______________________________________________________________
2. What is the low end of the range of surface temperatures for blue-white stars?
_______________________________________________________________
3. What is the color of stars that have a temperature of around 6,000°C at the low
end of their temperature range?
_______________________________________________________________
4. What is the color of stars that have a temperature of around 3,500°C at the low
end of their temperature range?
_______________________________________________________________
5. Suppose you want to show the upper end of the temperature ranges for a few
stars using a line graph. Use data from the table below to create your graph.
Color
Surface Temperature of Star (C)
orange
yellow
Yellow-white
white
5,000
6,000
7,500
10,000
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Earth Science
28
Stars, Galaxies and the Universe
ANSWER.KEY
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Earth Science
58
Stars, Galaxies and the Universe