The Sun is mostly composed of hydrogen. About 75 percent of its mass is made up of this element. The second most common element is helium. This...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your tough...
题目The sun is a star. It gives us light and heat. Without the sun, life on Earth would not be possible. What is the sun mainly made of? A. Hydrogen and helium. B. Oxygen and nitrogen. C. Carbon and oxygen. D. Water and air. ...
Ed Sheeran-Shape of You 03:56 Daniel Powter-Free Loop 03:51 Lulleaux&Kid Princess-Empty Love 02:51 【In The Shadow Of The Sun】这是一首直击心灵的歌曲! 03:56 “听了这首歌,直接嗨起来了!~”—《Count The Hours》 02:32 Bruno Mars-Just the Way You Are 03:41 “超有力量的宝...
Farther from the Sun, where temperatures were very low. the planets attracted huge amounts of hydrogen and helium. They became the gas giants Jupiter, Saturn, Uranus and Neptune.Asteroids AND Comets Between the orbits of Mars and Jupiter is a band of space where asteroids rocks as big as ...
"A direct measure of solar activity is the number of sunspots on the surface," Reinhold said. "Finding such stars with very similar parameters as our sun but being five times more variable was surprising." The sun -made up mainly of hydrogen and helium-is an average-s...
The ultimate source of energy for humans comes from what source? What does the sun consume to produce energy and helium? How does the sun produce energy? What makes up the sun? What is the ultimate source(s) of energy that drives all processes on Earth?
The temperature of the Sun isn't the same all over. In some places where "sun spots" happen, it isn't as hot as elsewhere.It is made up of almost all of hydrogen(氢气), with a little helium(氦气) and a few heavier elements including oxygen. And there's even some iron there too...
Helium: Helium is a chemical element that has the atomic number 2. Its symbol is 'He.' Helium was first discovered in 1868 by Jules Cesar Janssen during a solar eclipse. Answer and Explanation:1 Helium is a major component of stars, such as our Sun. In fact, helium is the second most...
It is made up of almost of hydrogen(氢气), with a little helium(氦气) and a few heavier elements including oxygen. And there's even some iron there. Light from the Sun reaches the earth in just five minutes! Remember not to look directly at the Sun. You could seriously damage your...
akin toJupiter. According to NASA Space Place, the hydrogen in the sun's core is held together by a lot ofgravityresulting in high pressure. The pressure is so high that when hydrogen atoms collide with enough force they create a new element — helium — in a process called nuclear ...