Star spectra gizmo - Study guides, Class notes & Summaries

1. Locate the two Cepheid variables, the stars that change in brightness over time. Star A-091 is the yellow star, and star A-171 is the white star. A. Which star reaches a greater ​apparent brightness​? ANSWER: Star A-171 is the brighter star. B. Which star takes longer to pulse? ANSWER: Star A-091 takes longer to pulse. 2. Because both stars are in the same galaxy, they are about the same distance from Earth. Based on what you see, how is the brightness of the star related ...

Big Bang Theory – Hubble’s Law. Vocabulary: absolute brightness, absorption spectrum, apparent brightness, Big Bang theory, blueshift, Cepheid variable, Doppler shift, Hubble constant, Hubble’s law, luminosity, megaparsec, period, redshift, spectrograph Gizmo Warm-up In 1912, an astronomer named Henrietta Swan Leavitt studied a class of stars called Cepheid variables. These stars change from bright to dim to bright again. Her discoveries led to a method of measuring distances to oth...

Exam (elaborations) GIZMOS Star Spectra Vocabulary: absorption spectrum, binary star, blueshift, Cepheid variable, emission spectrum, giant star, nebula, redshift, spectrum, star Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. What happens when light goes through a prism? Light bends and the visible spectrum showing the colors of the rainbow are visible. This band of colors is called a spectrum. Red, Orange, Yellow, Green, Blue, Indigo, Violet 2. A rainbow is an exampl...

Name: Date: Student Exploration: Star Spectra Vocabulary: absorption spectrum, binary star, blueshift, Cepheid variable, emission spectrum, giant star, nebula, redshift, spectrum, star Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. What happens when light goes through a prism? splits into the colours of the rainbow This band of colors is called a spectrum. 2. A rainbow is an example of a spectrum. What is the sequence of colors in a rainbow? red, orange, yellow, green, blue, ind...