Students focus on the crosscutting concept of Scale, Proportion, and Quantity as they learn that different stars range in size, brightness, and distance from Earth. Discussion Questions:
Watch the first three videos below... | Big Ideas:
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Optional Class Discussion or Student Exploration:
The following text screenshots are from this article: http://www.universetoday.com/24299/types-of-stars/
A nebula, which comes from the Latin word for mist or cloud,[1] is an interstellar cloud of dust, hydrogen, helium, plasma, and other gases. A nebula is usually made up of hydrogen gas and plasma. It may be the first stage of a star's cycle, but it may also be one of the last stages. Many nebulae or stars form from gravity pulling gases and dust together. As the cloud gets denser and denser, massive stars may form in the center. Examples of these types of nebulae are the Rosette nebula and the Pelican nebula. The size of these nebulae varies depending on the size of the original cloud of gas. These are sites where star formation occurs. Some nebulae are formed as the result of supernova explosions from massive, short-lived stars. One of the best examples of this is the Crab nebula, in Taurus. The supernova event was recorded in the year 1054. The compact object that was created after the explosion lies in the center of the Crab Nebula and is a neutron star. Other nebulae may form as planetary nebulae. This is the final stage of a small star's life, like our Sun. Stars with a mass up to 8-10 solar masses eventually turn into red giants, which end with a small "poof" called a nova. The material left behind is called a planetary nebulae. Source: http://wiki.kidzsearch.com/wiki/Nebula |
Optional Class Discussion or Student Exploration:
The following screenshots are from: https://owlcation.com/stem/Different-Types-of-Stars-in-the-Universe
Student-Led Component:
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Reflection Video:
Lebron and Trina are talking about our sun and other stars. Trina argues that the sun is much larger than all the other stars in the sky. She also explains that most of the other stars are about the same size as each other and the same distance from Earth. Lebron disagrees. He explains that the sun looks larger than the other stars because it is closer. He also argues that the other stars vary a great deal in size and distance from Earth. Who is correct? Explain your answer. | A star's brightness is determined by its DISTANCE: A star's brightness is determined by its TEMPERATURE: A star's brightness is determined by its SIZE: |