https://padlet.com/sebmart2009/6o7vqr34u9g0dc5g Hecho con magia y amor en-us 2021-06-22 14:08:46 UTC 2021-06-22 14:29:05 UTC hello@padlet.com sebmart2009 https://padlet.com/sebmart2009/6o7vqr34u9g0dc5g/wish/1619734707 stars are giant spheres of superhot gas made up mostly of hydrogen and helium. Stars get so hot by burning hydrogen into helium in a process called nuclear fusion. This is what makes them so hot and bright. Our Sun is a star.


]]> 2021-06-22 14:10:06 UTC https://padlet.com/sebmart2009/6o7vqr34u9g0dc5g/wish/1619734707 sebmart2009 https://padlet.com/sebmart2009/6o7vqr34u9g0dc5g/wish/1619735022 Stars are born within the clouds of dust and scattered throughout most galaxies. Turbulence deep within these clouds gives rise to knots with sufficient mass that the gas and dust can begin to collapse under its own gravitational attraction. As the cloud collapses, the material at the center begins to heat up.

1. STAGE 1: AN INTERSTELLAR CLOUD.
2. STAGE 2: A COLLAPSING CLOUD FRAGMENT.
3. STAGE 3: FRAGMENTATION CEASES.
4. STAGE 4: A PROTOSTAR.
5. STAGE 5: PROTOSTELLAR EVOLUTION.
6. STAGE 6: A NEWBORN STAR.
7. STAGE 7: THE MAIN SEQUENCE AT LAST.

]]> 2021-06-22 14:10:14 UTC https://padlet.com/sebmart2009/6o7vqr34u9g0dc5g/wish/1619735022 sebmart2009 https://padlet.com/sebmart2009/6o7vqr34u9g0dc5g/wish/1619749716 Types of Stars There are many different types of stars. Stars that are in their main sequence (normal stars) are categorized by their color. The smallest stars are red and don't give off much of a glow. Medium size stars are yellow, like the Sun. The largest stars are blue and are hugely bright. The larger the main sequence star, the hotter and brighter they are. Dwarfs - Smaller stars are called dwarf stars. Red and yellow stars are generally called dwarfs. A brown dwarf is one that never quite got large enough for nuclear fusion to occur. A white dwarf is the remnants of the collapse of a red giant star. Giants - Giant stars may be main sequence stars like a blue giant, or stars that are expanding like red giants. Some supergiant stars are as big as the entire Solar System! Neutrons - A neutron star is created from the collapse of a giant star. It's very tiny, but very dense.]]> 2021-06-22 14:17:46 UTC https://padlet.com/sebmart2009/6o7vqr34u9g0dc5g/wish/1619749716 alanrobertogb https://padlet.com/sebmart2009/6o7vqr34u9g0dc5g/wish/1619764552 Most of the stars in the universe are red dwarfs. They twinkle because of movement in the Earth's atmosphere. Many stars come in pairs called binary stars. There are some groupings with up to 4 stars. The smaller they are the longer they live. Giant stars are bright, but tend to burn out fast. The nearest star to Earth is Proxima Centauri. It is 4.2 light-years away, meaning you would have to travel at the speed of light for 4.2 years to get there. The Sun is around 4.5 billion years old. Activities

Read more at: https://www.ducksters.com/science/star.php

]]> 2021-06-22 14:25:08 UTC https://padlet.com/sebmart2009/6o7vqr34u9g0dc5g/wish/1619764552 alanrobertogb https://padlet.com/sebmart2009/6o7vqr34u9g0dc5g/wish/1619771180 It consists of a central nucleus, convective and radiative zones, the photosphere, the chromosphere, and the corona. The core of the star is where all the nuclear fusion reactions occur to power the star.]]> 2021-06-22 14:28:31 UTC https://padlet.com/sebmart2009/6o7vqr34u9g0dc5g/wish/1619771180