What was the main element in the early universe according to the Big Bang theory? A. Oxygen B. Helium C. Hydrogen D. Carbon 相关知识点: 试题来源: 解析 C。解析:根据大爆炸理论,早期宇宙的主要元素是氢。大爆炸之后,最初形成的元素就是氢,然后通过核聚变等过程才逐渐形成其他元素。选项A氧不是...
What is the most common chemical element in the universe?How are all the other chemical elements formed?Define the terms:Galaxy,nebula,black hole,supernova,comet,asteroid,meteorite(这题必须用英文答)How and when is earth thought to have formed?Do the magnetic poles of the earth change?How do...
Most Abundant Element in the Universe Right now, the most abundant element in the universe is hydrogen. In stars, hydrogen fuses into helium. Eventually, massive stars (around 8 times more massive than our Sun) run through their supply of hydrogen. Then, the core of helium contracts, supply...
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The first element formed in the universe is most likely the first element of our periodic table: Hydrogen. This element was synthesized when the... Learn more about this topic: Big Bang Theory | Overview & Evidence from Chapter 15/ Lesson 2 ...
Element A basic constituent part of a physical or abstract system. Oxygen is a crucial element for life. 11 Aspect A particular part or feature of something. One interesting aspect of the city is its architecture. 10 Element A natural environment; atmospherically severe. They climbed the mountain...
What is the most important element to predict chronic daily headache A.The experience of severe pressure. B.An age of over 40 years old. C.Too many job changes in the past. D.The problems related to children. 你可能感兴趣的试题
4.Dilemma(or crisis, according toStory Grid). This is the most important element, what you've been building toward, the moment when a character is put into a situation where theymustmake an impossible choice.Learn more in our fulldilemma guide here. ...
Hydrogen is the lightest and most common element in the universe, consisting of just a single proton and a single electron, with the chemical symbol H. It is colorless and odorless, and exists as a gas at everyday temperatures. However, most of the hydrogen on the Earth is bound up with...
Sulfur is one of the most common elements in the universe - learn the sulfur definition, explore sulfur facts, and describe the characteristics of sulfur. Related to this Question Which chemical element has the symbol As? Which chemical element has the symbol Be?