Astr 100 - Study guides, Class notes & Summaries

A star has an apparent brightness of -2 and an absolute brightness of 1. What must be true? Select one: a. The star is further than 10 parsecs b. The star is at 10 parsecs c. The star is closer than 10 parsecs d. The star is close to exploding - c What is special about electromagnetic waves? Select one: a. We can see all of them b. They do not need a medium to travel c. They only exist near stars d. Each color travels at a different speed - b A star that has a smaller absolute bright...

Human technology seems on the verge of providing something on earth that the stars use all the time: thermonuclear reactions. This would give us a virtually inexhaustible supply of energy, but we face one particularly difficult problem namely: - we need to contain the hot hydrogen somehow. Since it has to be a temperature of several million degrees, ordinary material containers will not do it When we speak of the 'uniform' expansion of the universe - the behaviour is best understood as a ...

We have learned that the centre of the milky way contains a very massive black hole. We developed this understanding by: - Monitoring the orbital motions of many individual stars in the very central parts of the Milky Way If the sun were to be squashed down small enough to become a black hole, then: - The planets in the solar system would orbit the Sun in unchanged fashion (but would receive no light from it) The first stellar mass black hole identified, Cygnus X-1, was found in 1973. The n...

ASTR 102 Final Lecture Questions | 100% Correct Answers | Verified | Latest 2024 Version Q1.1: If every star in the universe was a grain ofsand, which of the following would be filled ~4meters deep in sand? A. This classroomB. Cal Poly campusC. SLO countryD. CaliforniaE. Continental US - SLO Q3.2: If you walk out of this building and face directly south, which direction is east? A. Slightly to the rightB. Slightly to the leftC. Directly rightD. Directly leftE. Behind you - D Q4.1...

ASTR 1000 Test 3 Questions With Answers 100% Correct ASTR 1000 Test 3 Questions With Answers 100% Correct ASTR 1000 Test 3 Questions With Answers 100% Correct ASTR 1000 Test 3 Questions With Answers 100% Correct ASTR 1000 Test 3 Questions With Answers 100% Correct ASTR 1000 Test 3 Questions With Answers 100% Correct ASTR 1000 Test 3 Questions With Answers 100% Correct ASTR 1000 Test 3 Questions With Answers 100% Correct ASTR 1000 Test 3 Questions With Answers 100% Correct ASTR 1000 Test 3 Questi...

order of red giant's life - Red Giant → Planetary Nebula → White Dwarf → Black Dwarf or Red Giant → Type II Supernova → Neutron Star or Red Giant → Type II Supernova → Black Hol The eventual fate of our Sun is to - become a steadily cooling white dwarf.

Quiz Not good place to build Observatory? - Australia (because of fire disaster) Best Location for an Observatory - 1. Big Island of Hawaii 2. Andes Mtn Chile 3. San Diego Dots - Stars in our galaxies blobs - Typically galaxies, 10% could be dead stars Light - Acts as 1. Weight 2. A Particle

Q1.1: If every star in the universe was a grain ofsand, which of the following would be filled ~4meters deep in sand? A. This classroomB. Cal Poly campusC. SLO countryD. CaliforniaE. Continental US - SLO Q3.2: If you walk out of this building and face directly south, which direction is east? A. Slightly to the rightB. Slightly to the leftC. Directly rightD. Directly leftE. Behind you - D Q4.1: Imagine that from your current location you observe a star rising directly in the east.When this s...

Rank the following from earliest to latest: protostars, dark globule, star cluster, supernova - Dark globule, protostars, supernova, star cluster Which type of light will be most affected by interstellar extinction? - Ultraviolet Globular clusters formed _______________ the gas from which our galaxy formed had time to collapse into a disk. - before The first stage of stellar evolution is the ___________________ phase - protostellar Time moves slower the _____________ you're moving - faste...

QUESTIONS AND ANSWERS