Main sequence star - Study guides, Class notes & Summaries

Please check the examination details below before entering your candidate information Candidate surname Other names Centre Number Candidate Number Pearson Edexcel International GCSE (9–1) Friday 14 June 2024 Afternoon (Time: 1 hour 15 minutes) 4PH1/2P Paper reference Total Marks Physics UNIT: 4PH1 PAPER: 2P You must have: Ruler, calculator, Equation Booklet (enclosed) Instructions • Use black ink or ball-point pen. • Fill in the boxes at the top of this page with your name, ...

A high-luminosity star... A. is always at a larger distance than a low-luminosity star B. emits more light than a low-luminosity star C. is always redder than a star with a lower luminosity D. is at a lower temperature than a low-luminosity star E. is always at a smaller distance than a low-luminosity star Answer - B If a red giant appears the same brightness as a red main sequence star, which one is further away? A. the red giant B. we cannot tell C. it depends on the phase o...

 -1.5 magnitude Sirius appears 25x brighter than 2 magnitude Polaris.  “All neutron stars are pulsars, but not all pulsars are neutron stars” FALSE  “Spectroscopic Binary” is the term given to a pair of stars that we can determine are orbiting each other only by measuring their periodic Doppler shifts.  A 6.8 solar mass neutron star does NOT exist.  A loop of gas and charged particles following the magnetic field lines between sunspot’s poles is a Prominence/...

This exam is entirely multiple choice or true/false. A=T, B=F TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 1) The photosphere is about 100 times the diameter of the Earth, and large sunspots are larger than our whole planet. 1) 2) Granulation is the most obvious proof of solar convective energy transport. 2) 3) The solar corona is much cooler than the Sun's surface, hence we must wait for a total solar eclipse to glimpse it with the naked eye. 3)...

Astro 7N All Exam Sets Combined Questions With Reviewed Correct Detailed Answers New Update!! 1. Which of the following has the smallest radius? - type A main sequence star - main sequence star w surface temp 8000k -white dwarf -neutron star -type K main sequence star - ANSWER neutron star 2. Why does the main sequence part of a stars life end? - ANSWER hydrogen in the core is exhausted the 3. Which of the following have the shortest lifetime on the main sequence? -st...

Test Bank for Horizons Exploring the Universe, 15th Edition by Michael A. Seeds, Dana Backman, Eric Wegryn. Complete chapters (Chap 1 to 21)test bank are included with answers. TABLE OF CONTENTS PART I: EXPLORING THE SKY. 1. Here and Now. Where Are We? When Is Now? Why Study Astronomy? 2. A User's Guide to the Sky. The Stars. The Sky: Its Motions and Cycles. 3. Cycles of the Sun and Moon. Cycles of the Sun. Astronomical Influences on Earth's Climate. The Changeable Moon. 4. The Orig...

Astro 7n Exam Set Questions With Reviewed Correct Detailed Answers New Update!! 1. How many stars are in our Solar System? A) 1 B) 0 C) millions D) 8 E) hundreds - ANSWER a 2. Which of the following main-sequence turnoffs indicates the oldest globular cluster? A) G2 B) O5 C) O9 D) B2 E) B7 - ANSWER a 3. What happens when the electrons in atoms of a particular chemical element jump from higher to lower energy levels? A) photons are absorbed b...

Astro 7N Exam 2 Questions and Answers | Verified Updated| Latest 2024. 1. A high-luminosity star ... A: is always at a larger distance than a low-luminosity star B: emits more light than a low-luminosity star C: is always redder than a star with a lower luminosity D: is at a lower temperature than a low-luminosity star E: is always at a smaller distance than a low-luminosity star 2. If a red giant appears the same brightness as a red main sequence star, which one is farther away? A:...

Astro 7N Exam 2 Questions and Answers | Verified Updated| Latest 2024. 1. A high-luminosity star ... A: is always at a larger distance than a low-luminosity star B: emits more light than a low-luminosity star C: is always redder than a star with a lower luminosity D: is at a lower temperature than a low-luminosity star E: is always at a smaller distance than a low-luminosity star 2. If a red giant appears the same brightness as a red main sequence star, which one is farther away? A:...

Astro 7N Exam 2 Questions and Answers | Verified Updated| Latest 2024. 1. A high-luminosity star ... A: is always at a larger distance than a low-luminosity star B: emits more light than a low-luminosity star C: is always redder than a star with a lower luminosity D: is at a lower temperature than a low-luminosity star E: is always at a smaller distance than a low-luminosity star 2. If a red giant appears the same brightness as a red main sequence star, which one is farther away? A:...