See more ideas about middle school science, earth science and 8th grade science. Determining the sizes of stars using the hr diagram. This is a great point to begin talking about star size. Some of the worksheets displayed are work stars and hr diagram, plotting variable stars on the h r diagram activity, work stars and the h r diagram, hr diagram student guide, h r diagram spread enter the data the plot, name date period lab the h r diagram stellar, properties of. By comparing the radii of different stars you will then find out. Use of informational texts relevant to student inquiries as part of the literacy development a is inherently interesting to most students, b motivates further reading, c builds.
Astrophysicists observe numerous stars at various stages in their evolutionary history to determine their changing properties and probable evolutionary tracks across the hr diagram. Our sun, also called sol, is included in the main sequence stars. Please click on the document you would like to download. This activity focuses on plotting pulsating variable stars. The color tells us the temperature of each star s surface. More luminous intrinsically bright stars lie at the top of the diagram and lower luminosity intrinsically faint stars lie at the bottom of the diagram. Whether it was a massive star some 5 or more times the mass of our sun or whether it was a low or. Color each star with the appropriate color and then cut them out. Beside that, we also come with more related ideas like gizmo answer key coastal winds and clouds, blank hr diagram and stars and the hr diagram worksheet answer key. The hertzsprungrussell diagram a graph of the temperature and luminosity of stars is called the hertzsprungrussell diagram hr diagram, which is named after two famous astronomers. It is important to note that the location of a star on the hr diagram does not relate to its position in space. Then you are going to use a relationship called stephans law to calculate the stars radii. This lab gives the kids a chance to practice plotting stars on the hr diagram.
From this diagram you can determine star properties as well as its life stage. The hertzsprungrussell hr or colourmagnitude diagram is used for understanding the properties of stars. If you would prefer your students to plot the bright and nearby stars themselves before plotting the variable stars, a blank hr diagram and the star data tables are available separately to download. Luminosity is a measure of howmuch energy leaves a star in a certain period of time. Hr diagram answer key displaying top 8 worksheets found for this concept some of the worksheets for this concept are work stars and hr diagram, objective students will plot label and interpret the, creating a hertzsprung russell diagram, pulsating variable star and h r diagram activity summary, answer keys for naap labs, cd o c x c o o o cd o o o o luminosity low o. The hertzsprungrussell diagram is actually a graph that illustrates the relationship that exists between the average surface temperature of stars and their absolute magnitude, which is how. Distance measurements are critical to understanding stellar properties. Jewels of the night is an excellent and effective activity that you can download and printout. What happens next in the life of a star depends on its initial mass. Classifying stars the hertzsprungrussell diagram there are a few hundred billion stars in our galaxy, the milky way and billions of galaxies in the universe.
Understanding the hr diagram lesson and assignment. Hw diagram for people the heightweight diagram was for one person. The hertzsprungrussell diagram hertzsprung and russell had the idea of plotting the luminosity of a star against its spectral type. Displaying all worksheets related to naap hr diagram. Phy111 5 the hr diagram power output, but in terms of stellar evolution they are not the samered giant stars are fusing hydrogen to helium in a shell around an inert helium core, whereas red clump stars are fusing helium to carbon inside the core. Some of the worksheets displayed are work stars and hr diagram, hr diagram work answer key pdf, f6 the hertzsprung russell diagram, h r diagram spread enter the data the plot, plotting variable stars on the h r diagram activity, lesson plan g2 the stars, properties of stars, the hertzsprung russell diagram. Luminosity is a measure of how much energy leaves a star in a certain period of time. Use your textbook to define the following terms in your glossary. Give each student a hertzsprungrussell diagram worksheet. Einar hertzsprung was a danish astronomer, and henry norris russell was. Describe the pattern made by the stars on your graph. Plot the stars listed in the data table at right on the graph paper provided.
The hr diagram is an important astronomical tool for understanding how stars evolve over time. Life cycle of stars and the hertzsprungrussell diagram. Hr wall diagram what types of stars are in our universe. Worksheets are work stars and hr diagram, hr diagram naap answers background information pdf, lab 8 stellar classification and the h r diagram 1, chapter 10 hertzsprung russell diagrams and distance to stars, objective students will plot label and interpret the, earth motions practice 1 answers, solar panels, 4415295 the. But a plot of luminosity vs color or spectral type or temperature is called a hertzsprungrussell. Russell publishes an article in nature in 1914 where he. Stars the hr diagrams displaying top 8 worksheets found for this concept some of the worksheets for this concept are work stars and hr diagram, plotting variable stars on the h r diagram activity, excercise draw hr diagram of star cluster 1, pulsating variable star and h r diagram activity summary, objective students will plot label and interpret the, creating a. The hr diagram changes also so the hr diagram can also be thought. Some of the worksheets for this concept are work stars and hr diagram, plotting variable stars on the h r diagram activity, lesson plan g2 the stars, creating a hertzsprung russell diagram, pulsating variable star and h r diagram activity summary, objective students will plot label and interpret the. The pink numbers give the main sequence lifetime in years for stars at that point in the main sequencee. Stars and the hr diagram worksheet answers free printables. Objective students will plot, label and interpret the.
The main sequence includes stars of all masses, ranging from cool red dwarfs to massive blue giants. Most stars in the solar neighborhood are fainter and cooler than the sun. Stellar evolution can not be studied by observing individual stars as most changes occur over millions and billions of years. A powerpoint lesson on the hertzsprungrussell diagram, binary stars, and nuclear fusion. Measure the diameter of each star and place them in the hr diagram graph according to their size and color.
Most stars occupy the region of the hr diagram along a band called the main sequence. Label each star s data point with the name of the star. The student hr diagram worksheet has bright and nearby stars already plotted. One important technique in science is to try and sort or classify things into groups and seek out trends or patterns. Take a look at 4 red stars from different parts of the hr diagram. Use the color that fits the section of the hr diagram where the star is located. Two new categories appear here the red giants and the blue giants. If we plot lots of stars on the hr diagram, they fall into groups. Understanding the hr diagram lesson and assignment understanding the hr diagram lesson and assignment introduction. From the location of a star on the diagram, its luminosity, spectral type, color, temperature, mass, age, chemical composition and evolutionary history are known. Students will be asked to locate specific stars on an hr diagram and measure their temperature and luminosity.
Stars and the hr diagram c o o r d i n a t e d s c i e n c e 1 background. Stars and the hr diagram worksheets lesson worksheets. Follow the instructions below to create your own hr diagram on the. Hot stars inhabit the left hand side of the diagram, cool stars the right hand side.
Most stars are classified by surface temperature spectral. Group c m versus temperature for the bright star set in table c. This can be understood in the context of the stellar evolution models, and used to test them. Hr diagram showing top 8 worksheets in the category hr diagram. Pulsating variable star and hr diagram activity summary. A plot of the nearest stars on the hr diagram is shown below. Bright stars at the top, faint stars at the bottom. Write down 3 observations about what you see so far.
The hertzsprungrussell diagram or hr diagram is constructed in logarithmic coordinates. Making a hertzsprung russell diagram esign pdf with. Draw a curve as best you can that joins the data points. The hr diagram plots stellar luminosity against surface. Most of the stars on the hr diagram are classified as what type of star. In short, this module provides a fairly indepth tutorial in reading hr diagrams. Draw the stars where they would go on the blank hr diagram. Hr diagram simulator allows you to place 1, 10 or 100 stars on the main sequence then compare their evolution off the main sequence either in steps or as a movie. Hertzsprungrussell diagram national schools observatory. If you have more than one star that looks alike in diameter and color, group them in a small area on the graph. Displaying top 8 worksheets found for stars and the h r diagram.
Note that the temperature axis is reversed with hotter stars on the left and colder stars to the right. Determining the sizes of stars using the hr diagram exercise in this exercise, you are going to use an hertzsprungrussell diagram to determine the luminosity and temperature of stars. You should use colored pencils or crayons for this activity. Most of the stars on the hr diagram are classified as which type of star. A8 mark on the diagram the hottest star label it h and the coolest star label it c.
This worksheet requires students to plot stars on hr diagram and then answer a few analysis questions. Physics hertzsprungrussell diagram teaching resources. Our main purpose is that these h r diagram worksheet answers images gallery can be a guide for you, give you more examples and most important. Star color is on the horizontal axis and star temperature is on the vertical axis. On the left is a well known schematic diagram combining the hr diagrams of star clusters of different ages. Note that the red x appears initially at the position where the sun resides. Main sequence, red giant, supergiant, and white dwarf. The hertzsprungrussell diagram is a graph that plots the temperature of a star against its absolute magnitude or luminosity. Draw a circle around each grouping of stars on your graph. They also believe that one day, our star will become a white dwarf star, but not for at least another 5 billion years. What type of star has a high temperature, but a low luminosity. Stars span an enormous range of luminosity, temperature, and size, and these parameters. Part 1 comprehension visualization demonstration 20 minutes.
It provides background theory and tables of bright and nearby stars for you to plot on the accompanying hr plot and frequency plot. Life cycle of a star worksheet a star is born stages common to all stars all stars start as a nebula. Hr applet mcgraw hill is an online applet showing stellar evolution on the hr diagram. Get this resource as part of a bundle and save up to 79%. Beginning with main sequence stars, i ask students to outline this section of the diagram with a black marker. These stars are fusing helium into carbon or heavier elements in the core and hydrogen into helium in a shell surrounding the core. The astronomy department from the university of nebraskalincoln hosts a great website with various educational resources, one of which is a very informative interactive hr diagram. Work together to put the rest of the stars on the hr diagram. Hr diagram activity group stars that have similar temperature and luminosity.
In this graphic construction, each star is a point marked on the ordinate by its brightness luminosity or absolute magnitude and on the abscissa by its spectral type or surface temperature. Plotting variable stars on the hr diagram activity. Hr diagram worksheet an hr diagram shows the relationship between a stars surface temperature and its absolute magnitude. Our sun is a fairly average star and sits near the middle. Hr diagram worksheet an hr diagram shows the relationship between a star s surface temperature and its absolute magnitude. Spectral classes in hr diagrams are described in table 1. The hertzsprungrussell diagram is actually a graph that illustrates the. These groups indicate types of stars, or stages in the. Use the data from table g2a to plot each of the 12 stars on the hr diagram. It was created by astronomers ejnar hertzsprung and henry norris russell about 1910, and can be used to chart the life cycle or evolution of a star most stars, including the sun, can be found in the main sequence of stars a prominent band running from the topleft.
Worksheets are work stars and hr diagram, plotting variable stars on the h r diagram activity, creating a hertzsprung russell diagram, pulsating variable star and h r diagram activity summary, objective students will plot label and interpret the, excercise draw hr diagram of star cluster 1, lesson plan. The hr diagram to the left is for a cluster in the large. Scientists believe they are the leftover centers of old stars. A protostar is the earliest stage of a star s life. Chart of main sequence stars, super giant stars, and dwarf stars see attached sheet. The hertzsprungrussell diagram worksheet has 27 questions to help students understand and interpret information about stars. The star expands to larger than it ever was during its lifetime a few to about a hundred times bigger. List the color of the stars from hottest to coldest. The color tells us the temperature of each stars surface. Describe the differences between the stars 2 points. A few nearby stars are more luminous than the sun, but most are much less luminous. These categories are main sequence stars, red giants, and white dwarfs. Nov 27, 2016 a powerpoint lesson on the hertzsprungrussell diagram, binary stars, and nuclear fusion. You can specify a stars parameters and watch it evolve.
The picture below shows the hertzsprungrussell diagram of a stellar cluster. When the absolute magnitude mv intrinsic brightness of stars is plotted against their surface temperature. We found some images about stars and the hr diagram worksheet answers. Stars and the h r diagram worksheets teacher worksheets. A perfect assignment to have students complete as the hr diagram is being introduced. A perfect assignment to have students complete as the hr diagram. Classifying stars we now have two properties of stars that we can measure. The next concentration of stars on the hr diagram is the horizontal giant branch. Look at the chart below and you will see that our sun is a medium yellow star. Then apparent brightness vs spectral type is basically the same as luminosity vs temperature. The hertzsprungrussell diagram is actually a graph that illustrates the relationship that exists between the average surface temperature of stars and their absolute. The site has accompanying explanations and background information. List all the types color and size of stars that are found in the main sequence. Displaying all worksheets related to stars and the hr diagram.
The hertzsprungrussell diagram is a scatter graph of stars showing the relationship between the stars brightness and their relative ages. How is it possible for white dwarf stars to have lower luminosity than the sun even though the sun is cooler than white dwarfs. Luminosity colorsurface temperature using these two characteristics has proved extraordinarily effective in understanding the properties of stars the hertzsprungrussell hr diagram. The darkened curve is called the main sequence, as this is where most stars are. What is the approximate surface temperature of the sun. Showing top 8 worksheets in the category stars and the h r diagram. Gravity can pull some of the gas and dust in a nebula together. Stars are classified according to their brightness and temperature. The hertzsprung\u20russell diagram, abbreviated as h\u20r diagram, hr diagram or hrd, is a scatter plot of stars showing the relationship between the stars absolute magnitudes or luminosities versus their stellar classifications or effective temperatures. The naap hr diagram lab explores the hertzsprungrussell diagram and those areas necessary to understand the diagram such as but not limited to the different kinds of spectrum, spectral classification, and luminosity class. This process occurs in older stars and causes them to swell up, making them brighter, but also cooler and redder at the surface.
There are a few hundred billion stars in our galaxy, the milky way and billions of galaxies in the universe. Students are asked to explain the relationship between surface temperature and color as well as brightness and size. Clearly, the brightest stars in the sky appear bright because of their enormous luminosities, not their proximity. Some of the worksheets displayed are work stars and hr diagram, plotting variable stars on the h r diagram activity, lesson plan g2 the stars, creating a hertzsprung russell diagram, pulsating variable star and h r diagram activity summary, objective students will plot label and interpret the, the.