- Study guides, Class notes & Summaries

What happens to a low mass star after spending most of its life on the main sequence? - It evolves to the red giant region of the H-R diagram. Which two ways can a star generate energy? - Fusion reactions in the core of the star and gravitational contraction. How does a main sequence star become a red giant? - When H in the core is exhausted, there is no more energy generation and gravity takes over, so the He core and the surrounding H shell contract. This leads to H-fusion due to the hea...

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4 pages

Written in 2023/2024

Grade A

Lectsavvy

ASTRONOMY 110 FINAL EXAM STUDY GUIDE CH 1-14 QUESTIONS AND ANSWERS What are constellations? - CORRECT ANSWERGroups of stars that make an apparent pattern in the sky.

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15 pages

Written in 2024/2025

Grade A+

STANGRADES

Astronomy 110 Week 5 Exam Questions and Answers Fully Solved Graded A+ The middle star in Orion's sword isn't a star at all. It is called the ____________________ or ____________________. It is actually part of a gigantic interstellar cloud region called the ____________________ in which stars and planets are coming into existence. - AnswersOrion Nebula; Great Nebula of Orion; Orion Molecular Cloud Visible light gives limited astronomical information. ____________________ images provid...

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5 pages

Written in 2024/2025

Grade A+

joshuawesonga22

Grossmont Astronomy 110 Exam Bundle

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7 items

DoctorHkane

How many constellations are there? - 88 constellations lookback time - The time elapsed between when we detect the light here on Earth and when it was originally emitted by the source, is known as the 'lookback time'. Center of Milky Way - The Galactic Center (or Galactic Centre) is the rotational center of the Milky Way galaxy; it is a supermassive black hole of 4.100 ± 0.034 million solar masses, which powers the compact radio source Sagittarius A. Period- Luminosity relation - In ...

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9 pages

Written in 2023/2024

Grade A

Lectsavvy

How did the solar system form? - Nebular Theory - Our Solar System formed from a giants, swirling cloud of gas and dust What are the terrestrial and JSUN (Jovian) planets made of? - Rocks and metals condense inside frost line, hydrogen compounds (ices) condense outside frost line What is the order of the planets from closest to the Sun to farthest from the Sun? - (MVEM/JSUN) Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune What are the 2 most common elements in our solar sy...

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16 pages

Written in 2023/2024

Grade A

Lectsavvy

The declination of a star in our sky The angle between the celestial equator and the star, measured along a great circle Passing through both celestial poles. The angle between your zenith and your horizon is 90°. The Sun rises due east in the sky when viewed from any site on the Earth, but ONLY on the first day of spring and the first day of fall. Two celestial coordinates, which together describe a star's position precisely in our sky, are: right ascension and declination ...

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87 pages

Written in 2023/2024

Grade A

Lectsavvy

Which of the following distances is the greatest? - The distance from the Sun to the nearest neighboring star So called "Apollo" asteroids are distinguished because they ___. - Cross the orbit of the Earth Isotopes of the SAME element only differ in their number of ___. - Neutrons In geology, what is the so called "ring of fire"? - The perimeter of the Pacific Ocean Which of the following types of electromagnetic radiation has the highest frequency? - X-Rays According to Newto...

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4 pages

Written in 2023/2024

Grade A

Lectsavvy

Early Ideas of how Sun shines - Impacts from meteors heated the sun. Sun's shine - Nuclear Fusion Sun's Inner Layers - Core, Radiation Zone, and Convection Zone Sun's Outer Layers - Photosphere, Chromosphere, and Corona. Photosphere - Visible surface of the Sun, and it emits Visible Light. Chromosphere - Second layer, Red color is only apparent during eclipses. Emits UV Light. Corona - Aura of plasma that surrounds the Sun. Emits X-ray Light. Only layer seen during a tota...

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9 pages

Written in 2023/2024

Grade A

Lectsavvy