In this diagram, a neutron is absorbed by a uranium-235 nucleus, as a result, it turns of a small period of time to an excited uranium-236 nucleus, with the excitation energy provided by the kinetic energy of the neutron plus the forces that bind to the neutron. The uranium-236 then splits into two, smaller, lighter, fast-moving elements (these are known as fission products) and releases three free neutrons as well as gamma rays. Fusion and fission are nuclear reactions. Fusion is the binding of two atoms to produce a heavier atom while fission is splitting of an atom. Fusion releases more energy than fission and powers the stars.
To begin with, the size of a planet determines the amount of dimming during a transit. Larger planets block more of the star, and therefore the dip in brightness is larger. Knowing the size of Trappist 1, the astronomers could measure the transit dimming due to each planet to determine its size. (According to the Planetary society Transit dimming is a method for Finding Earth 's. This method detects distant planets by measuring the minute dimming of a star as an orbiting planet passes between it and the Earth.
As the elements begin to clump together, the gravity of the clumps grow. This causes the mass to form a spinning cloud disk, known as a protoplanetary disk with a protostar in the center. As the protostar’s temperature increased due to the increased gravity and therefore kinetic energy, the disk continued to spin faster and get flatter. Once the temperature reached 10 million degrees Kelvin, the hydrogen and helium begin to undergo nuclear fission. This is where atoms will collide and fuse together to form larger and heavier elements.
Hydrogen bombs are more than 1000 times more powerful than the very common atomic bomb. The explosion is from nuclear fusion which is when hydrogen nuclei (plural of nucleus) are joined to form helium nuclei, releasing great destructive energy and radioactive fallout. When the nuclei combine there is a split second where there is nothing and then there is the explosion. An atomic bomb is the trigger or the smaller bomb of what sets off the hydrogen bomb. We have to be careful with the hydrogen bomb because, if used, it will cause a major catastrophe far greater than the damage done by the atomic bomb.
“The total mass of all eight planets is around 2.67 x 1027 kg. The sun 's mass is 1.989×1030 kilograms (2.2×1026 short tons), approximately 330,000 times the mass of Earth. It accounts for about 99.86% of the total mass of the Solar System.” (space.com). In this situation, the sun has a lot greater mass than all the planets, so it can carry the planets’ force, so it doesn’t move. This shows that the magnitude of the planets in the orbit around the
Supervolcanoes are even more powerful than regular volcanoes. This explosion is so powerful that it will destroy most of the northern United States. It would also launch one thousand cubic kilometers (six hundred twenty one cubic miles) of ash into the sky. This is the equivalent of four
June 30th, 1908 marks the date of a vicious asteroid impacting near the Tunguska River in Siberia. This event, known as the Tunguska Event, came into Earth’s atmosphere traveling at an extremely high speed and at a height of about 8500 meters the asteroid blew up due to the high temperature and pressure and it is said to have released so much energy that it would be equivalent to 185 Hiroshima nuclear bombs going off (Phillips). Over 800 square miles of forest was destroyed in the blast and there are even accounts of people being blown away by the shockwaves and feeling immense heat while being over 40 miles from the place of explosion (Phillips). Tunguska was a display of how powerful and dangerous a NEO can be to Earth and another large NEO impact was more recent on February 15, 2013. Although not as large as the Tunguska Event, the Chelyabinsk meteor still released more energy than a nuclear explosion and it was actually more fatal than the former as over 1,200 people were injured by the shockwave coming from the asteroid as it broke apart over the Russian city of Chelyabinsk (Howell).
Nuclear energy What is nuclear energy: Nuclear energy is a nuclear power that released by nuclear reaction to generate heat. the energy released. nuclear energy uses fuel made from mined and processed uranium to make steam and generate electricity by two ways. nuclear fusion and nuclear fission. In nuclear fusion, energy is released when atoms are combined or fused together to form a larger atom.
‘The Big Bang theory’ is a theory that has become widely accepted because of its proficiency in simply explaining the three major cosmological observations. Those three observations are: the expansion of the universe as measured by the redshift of light released from galaxies, the presence of the cosmic background radiation and, the comparative amounts of hydrogen, helium, and deuterium in the universe. The vast majority of astronomers believe that the Universe started with the Big Bang around 14 billion years ago. Before the Big Bang, it is theorised that the whole Universe was inside a ‘bubble’ that was hundreds of times smaller than a pinhead. This bubble was feverishly hot and much denser than the universe we know now.
The different gravitational pulls of the four types of stars show the different effects on space-time. The first star is our star in th center of the solar system referred to as the sun. The last star is a neutron star. Neutron stars are extremely dense star with a gravitational pull of two hundred billion times that of Earth. If a person lived on the sun in the center of our solar systems, and then traveled to a neutron star and lived there for one year, when the person went back to the sun he left, hundreds of years would have passed.
Starburst Galaxies Formation and Facts Starburst galaxies form stars much faster than normal galaxies. They can create new stars 1,000 times faster than regular galaxies. They are triggered when two galaxies pass by each other. Other ways that they can be created include galactic merging and if the galaxy has a galactic bar. All galaxies have a black hole in their center, and when they are extremely active, this can trigger rapid star formation.
Located 12.2 billion lightyears away, the Baby Boom Galaxy was discovered by the Spitzer Science Center at the California Institute of Technology. The Baby Boom galaxy is not only a starburst galaxy, but it is known for being the world record holder for brightest starburst galaxy in the distant universe. Brightness is the measure of its extreme star formation rate. Nicknamed “the extreme stellar machine,” the galaxy produces stars at a measured rate of up to 4,000 stars per year, or one every 2.2 hours. Compared to the Milky Way Galaxy, where the Earth is located, which produces 10 stars per year on average.
The third instance is after the chain of dominoes collapse and send the marble rolling down the inclined plane. The speed of the changes the distance it will go, therefore it had to be the exact acceleration in order for it to land into the cup. Negative Acceleration is shown when again in the pulley system whereby the string and force of the cup the second cup is pulled up as the same direction of the nvelocity. It then slows down showing two indications of a negative
B.) Observing the shadows C.) A partial solar eclipse 2. What is a constellation? A. Mixtures of ice, rock and dust cluster B. billions of stars held together by the force of gravity - C. a group of stars that form a picture 3. How many planets make planets make up our solar system?
Answer # 2: In general we can see from the above graph carbon diffusivity in iron is much faster as compared to aluminum diffusivity in aluminum. At about 5000C diffusivity of carbon in iron and Al in Al as shown below: Diffusing Specie Host Metal Diffusivity (m2/sec) Carbon α- Fe 2.4E-12 Carbon - Fe 1.7E-10 Al Al 4.2E-14 Question # 2: Part B At around 900oC, why is there a jump in the diffusivity value of carbon in iron? Answer # 2: During a diffusion jump, the interstitial atom transfers from one octahedral place to another. Midway between these two places, it is bounded by 4 atoms all at equivalent spaces from the foreign atom. The 4 atoms form a tetrahedron with the foreign atom at the center.