Cepheid variable Study guides, Class notes & Summaries

What observational measurement is required to determine the distance to a Galaxy using Hubble's Law? - ANSWER-Redshift What were the conditions of the early universe? - ANSWER-Hot and very dense True or False: If Light traveled for 5 billion years, then the distance between the two galaxies must have been less than 5 billion light years when the light began its journey because the distances between galaxies are always increasing in the expanding universe - ANSWER-True If our universe is...

What observational measurement is required to determine the distance to a Galaxy using Hubble's Law? - ANSWER-Redshift What were the conditions of the early universe? - ANSWER-Hot and very dense True or False: If Light traveled for 5 billion years, then the distance between the two galaxies must have been less than 5 billion light years when the light began its journey because the distances between galaxies are always increasing in the expanding universe - ANSWER-True If our universe is...

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

ASTRON final exam Questions and answers, VERIFIED. Ch 17- What do we use medthods of stand candles? - -Astronomers cannot use parallax to measure vast distances because the angle by which the galaxy's position changes as we move around the sun is too tiny to be detected, so astronomers must use this method to find distance How do we use standard candles? - -if we know the luminosity we can use the inverse-square law to deduce its distance from how bright it looks to us Cepheids - -ar...

GIZMOS Student Exploration: Big Bang Theory – Hubble’s Law 2021 Answered. Student Exploration: 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 Prior Knowledge Questions (Do these BEFORE using the Gizmo.) Standing by the side of a lonely highway at night, you see two motorcycl...

What observational measurement is required to determine the distance to a Galaxy using Hubble's Law? - ANSWER-Redshift What were the conditions of the early universe? - ANSWER-Hot and very dense True or False: If Light traveled for 5 billion years, then the distance between the two galaxies must have been less than 5 billion light years when the light began its journey because the distances between galaxies are always increasing in the expanding universe - ANSWER-True If our universe is...

1) The Hertzsprung-Russell Diagram plots ________ against the spectral type or temperature. A) brightness or apparent magnitude B) mass C) distance D) size or density E) luminosity or absolute magnitude 1) 2) Which event marks the birth of a star? A) formation of the planetary nebula B) collapse of an interstellar cloud C) formation of a photosphere D) instability in an interstellar cloud E) fusion of hydrogen atoms into helium atoms 2) 3) Dr. Smith believes that the Hubble constan...

The disk of the galaxy is older than the halo. - F The density wave theory explains spurs and branches along the spiral arms. - F Giant molecular cloud complexes are located in spiral arms. - T Shapley found the distance to the center of the galaxy by studying the distance to open clusters - F The center of our galaxy is located in the direction of the constellation of Orion - F The rapid rotation in the outer disk suggests that our galaxy is more massive than previously thought. - T S...

Science Bowl Astronomy Study Guide Exam Questions With Complete Solutions (Verified And Updated) Albedo - answerAmount of sunlight that is reflected by the surface of a planet or a satellite, such as the Moon. Aphelion - answerThe point in an orbit in which an object is at its farthest possible distance from the Sun. Apogee - answerThe point in an orbit in which an object is at its farthest possible distance from the Earth. Astronomical Unit (AU) - answerMean distance from the Earth to ...

Gizmo: Star Spectra Vocabulary: absorption spectrum, binary star, blue shift, 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? It forms a 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, indigo, violet. Gizmo Warm-up The inte...