Universe age - Study guides, Class notes & Summaries

APSC 151 – midterm UPDATED Exam Questions and CORRECT Answers Compared to the age of the Universe of about 14 billion years, the currently accepted age of Earth is about ________ years as determined by using radioactivity for dating rocks and minerals. A) 4.6 thousand B) 4.6 billion C) 5.4 million D) 13.7 billion - Correct Answer- B The ________ division of the geologic time scale is an era of the Phanerozoic Eon. A) Paleocene B) Paleozoic C) Permian D) Proterozoic - Correct Ans...

Which of the following is the smallest? a) 1 AU b) Size of a typical planet c) 1 light-month d) Size of a typical star - b) Size of a typical planet How are galaxies important to our existence? a) Without galaxies, the universe could not be expanding b) Without galaxies, there could not have been a big bang c) Galaxies provide the gravity that prevents us from falling off Earth d) Galaxies prevent planets from leaving their orbits around stars; e.g., our galaxy prevents Earth from lea...

List the current scientific consensus of the age of the a) Universe, b) Earth, and c) Moon, and explain how scientists have calculated these ages - a) Age of the Universe: 13.77 +/- 0.04 billion years old (Measured by calculating how fast our universe is and has been expanding since the Big Bang) b) Age of the Earth: 4.54 +/- 0.05 billion years old (Measured by radiometric dating of meteorites that formed at the same time as Earth.) c) Age of the Moon: 4.425 +/- 0.025 billion years old (M...

CRRN flashcards Questions and Answers 2023 ethical dilemma When a person or group is forced to choose between 2 equally difficult actions because they are both right or they are both wrong, or both contain uncertainty Code of Ethics Established by ANA; Provides a framework for nurses to use in ethical analysis and decision making; 9 provisions living will Legal document that allows a person to make his or her wished regarding medical care, illness or conditions that result in i...

How does the hypothesis of inflation account for the existence of the "seeds" of density from which galaxies and other large structures formed? Ans- Inflation would have caused random, microscopic quantum fluctuations to grow so large in size that they became the seeds of structure. Why do virtually all the galaxies in the universe appear to be moving away from our own? Ans- Expansion causes all galaxies to move away from nearly all others. Suppose we observe a Cepheid variable in a ...

Cosmic Address, from small to large Ans- Earth, solar system, Milky Way Galaxy, Local Group, Local Supercluster, universe The Universe is expanding means that... Ans- The average distance between galaxies is growing with time If stars existed but galaxies did not... Ans- We would not exist because we are made of material that required recycling in galaxies. Could we see a galaxy 20 billion light years away? Ans- No, because it would be beyond the bounds of our observable universe The...

Late Bronze age (Mycenaean Age)() - Mycenae takes over Crete, destroyed Knossos, and becomes central power in 1450. Early Dark Age(1250-900): - -Mycenae was destroyed, which resulted in cultural and literary decline. -Then mainland Greeks resettle in Ionia, Dorians take over. -1250 marks Trojan war. Late Dark Age (900-750): - -Population growth and new trade. -800-Greek alphabet, 776-First Olympic Games 700- Greeks settle in Magna Graecia, S. Italy (Siciliy) Archaic (750-480) - -Rise of ...

Galileo Galilei Created the first handmade telescope Galileo wasn't only interested in the beauty of nature however .... he wanted to know how nature worked. Galileo made observations using his telescope, which could magnify objects to more than .... 32 times their actual size. His observations and conclusions led to discoveries that intrigued and fascinated some people. Others were enraged because his findings ... contradicted the beliefs of the Catholic Church at that...

Geology 101 Review Practice Test. The Principle of _ state that the physical, chemical, and biological processes at work shaping the Earth today have also operated in the geologic past. - CORRECT ANSWER uniformitarianism What is the accepted age of the Earth? - CORRECT ANSWER 4.6 billion years What percentage of the Earth is covered by oceans? - CORRECT ANSWER 71% What is though to be the date of the formation of the universe? - CORRECT ANSWER 13.7 billion years What is the defi...

Galileo Galilei Created the first handmade telescope to the sky Galileo wasn't only interested in the beauty of nature however .... he wanted to know how nature worked. Galileo made observations using his telescope, which could magnify objects to more than .... 32 times their actual size. His observations and conclusions led to discoveries that intrigued and fascinated some people. Others were enraged because his findings ... contradicted the beliefs of the Catholic Chu...