Earth & Space Science
You get to learn all about galaxies, including our own Milky Way galaxy. Learn about the formation and expansion of the universe, including the big bang theory.
After completing this tutorial, you will be able to complete the following:
What is the definition of a star?
~ Stars are luminous celestial bodies that generate energy and heat from within.
What makes some stars brighter than others?
~ The brightness of a star is determined by its size, temperature, and age.
The Hertzsprung-Russell diagram below is incomplete. Complete the diagram by adding white dwarves, supergiants, and giants in their correct location.
What does the Hertzsprung-Russell diagram illustrate?
~ The Hertzsprung-Russell diagram illustrates the brightness of various stars compared to the sun's brightness, as well as the stars' temperatures. It also indicates the names given to the various categories of stars. These categories include the main sequence of stars, white dwarfs, supergiants, and giants.
What are nebulae?
~ Nebulae are large clouds of gas and dust. The gravitational pull that these particles of gas and dust have on each other causes nebulae to form stars.
What is the name of our galaxy? What does it contain?
~ The universe is full of galaxies. The name of our galaxy is the Milky Way. It contains the eight planets in our solar system, stars, gas, and dust, all of which are all bound together by gravity.
|Approximate Time||2 Minutes|
|Pre-requisite Concepts||Students should be able to define dwarf, Ejnar Hertzsprung, and galaxy.|
|Course||Earth & Space Science|
|Type of Tutorial||Animation|
|Key Vocabulary||dwarf, Ejnar Hertzsprung, galaxy|