This unit helps students understand the relationship between a star's color and its temperature. During class the teacher will demonstrate with a light bulb, the relationship between color and temperature. The light bulb is in the front of the room. The correct answer is orange. Here the right answer is yellow.
Students also look at six well known stars and their visual colors.
Using the information from observing the light bulb, students are asked to arrange the stars from coldest to hottest . Here are the stars and their colors. So students now understand that red means the star is cold and blue-white means the star is hot. This is known as a continuous spectrum . With this method, students can make more observations about color and temperature.