In answering this question, the big bang theory removes the need for a creator. The big bang theory gcse gorillaphysics gcse and a. The big bang theory suggests how our universe was created. Describe the evidence for the big bang theory and expanding universe. Due to the extreme conditions and the violence of its very early stages, it arguably saw more activity and change during the first second than in all the billions of years since. His work was once ridiculed, but the name big bang stuck and today this theory of the first moments of our universe is a major part of. Hazel goes through the entire astronomy topic for the edexcel 91 gcse, including our solar system, circular orbits, the big bang and steady state theories, life cycles of stars and methods of. They have used their observations to develop a theory called the big bang. Bbc site on the big bang theory it contains links to programs on the subject. In this video, we look at what is meant by redshift and how this supports the big bang theory. According to the big bang model of how the universe began, the universe. A secondary education revision video to help you succeed in your science gcse. The earliest stages of the big bang focus on a moment in which all the separate forces of the universe were part of a unified force.
Gcse science physics high school the universe what is. Gcse science physics high school the universe big bang. Timeline of the big bang the big bang and the big crunch. It was hotter and denser than anything we can imagine. A quick run through of the key things you need to know about the big bang theory for gcse physics. As astrophysicist ethan siegel wrote in his recent book beyond the galaxy. Astronomers think that the universe started with the big bang. The universe would contract at an ever increasing rate until all the matter collided at the tiny point which started it all. What is the big bang the big bang is the most widely accepted theoryexplaining how the universe began the theory suggests that a long time ago about 14 billion years the universe started as a big explosion. At that time, the entire universe was inside a bubble that was thousands of times smaller than a pinhead. Although this type of universe was proposed by russian. His ideas led to the theory of the big bang, which began the expansion of the universe and influenced the creation of the first stars and galaxies. Im taking a guess here, but i think your understanding of the scientific method and what constitutes evidence for the big bang needs clarification.
The origin of the universe the big bang theory gcse physics. The big bang theory gcse physics single science revision bbc. This is because cosmogony the study of the origin of the universe is an area where science and theology meet. At its simplest, it talks about the universe as we know it starting. Edwin hubble, the namesake of the hubble space telescope, was one of the first scientists to observe and measure this expansion. This section describes flowcharts one of the techniques used to describe an algorithm. Theories about the universes development, such as the big bang theory, are based on astronomical observations such as redshift and cosmic microwave background radiation. Science inspiring resources for k12 from cells to the solar system, boardworks science products contain a wealth of high quality, readyprepared resources for your interactive whiteboard or classroom projector that are mapped to your state standards and help you teach extraordinary lessons. He was a belgian physicist, who was also a catholic priest. First, the scientific method is a very general process for investigating and explaining any phen. Expanding universe and big bang gcserevision, physics. Learn about and revise redshift, the expanding universe, the big bang theory and the future of the universe with gcse bitesize physics.
The big bang theory started as a hypothesis a suggested explanation thought up creatively to account for the data. Subsequent calculations have dated this big bang to approximately. The big bang theory scientists have gathered a lot of evidence and information about the universe. Astronomy gcse physics revision edexcel gcse 91 youtube. While many people believe that the big bang theory refers to an explosion, it actually refers to the expansion of the universe. It is a relatively small star when compared to other stars in the universe. The big bang and the origin of the universe lab quiz. The second theory, the main exponent of which was fred hoyle, stated that the universe has the same overall density, and always has had, but that as it expands, new matter is created in the spaces left by galaxies receding from one another. The big bang theory the expanding universe ocr gateway.
Space exploration uses a variety of manned spacecraft, space probes and. Theories about the development of the universe, such as the big bang theory, are based on astronomical observations and ideas such as redshift and dark energy. From the birth of the cosmos in the big bang to the formation of life on earth. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The fact that the universe is expanding is strong evidence for the fact that it started as a small point. The big bang is how astronomers explain the way the universe began.
Starting from today and working backwards scientists calculate that the universe began with a big bang about 14 thousand million years ago. Georgeshenri lemaitre was the first scientist to figure out the basics of how our universe was created. Any discussion of the big bang theory would be incomplete without asking the question, what about god. This was nicknamed rather scathingly the big bang theory. It involves concepts that contradict the way we perceive the world. The big bang theory is the leading explanation about how the universe began. The mathematical underpinnings of the big bang theory include albert einsteins general theory of relativity along with standard theories of fundamental particles. At gcse you do not need to know all of the stages but they are fascinating to read. Is the theory of the 4th dimension similar to something like the void. The big bang theory is a scientific approach to answering the question of how the world began. Big bang theory the expanding universe aqa gcse physics.
Not only particles and fields of force had to come into being at the big bang, but the laws of physics themselves, and this by a process as higgledypiggledy as genetic mutation or the second law of thermodynamics. To this very day, there is no other model that is both consistent with general relativity and explains the hubble expansion of the universe. In 1929, he was studying the spectra, or rainbows, of distant galaxies by allowing the light from these objects to pass through a prism on his telescope. Learn about and revise redshift, the expanding universe and the big bang theory with gcse bitesize physics. The big bang theory gcse and a level physics revision. How the big bang theory works howstuffworks science. At its simplest, it says the universe as we know it started with a small singularity, then inflated over the next. Opinions expressed by forbes contributors are their own. Bigbang model, widely held theory of the evolution of the universe. The big bang theory states that the earth began,700 million years ago in an explosion of matter which formed everything in the universe as we know it today. New ideas and advances in technology have given rise to new theories. Big bang theory for kids sciencing for all things science. Explained s1 e3 science, religion, and the big bang.
Most astronomers believe the universe began in a big bang about 14 billion years ago. A singularity is another word for the miniscule volume possessed by the mass of the universe at the start of the big bang. The short and skinny on the big bang howstuffworks. This theory was born of the observation that other. In the 1920s the big bang theory was proposed as a possible scientific explanation for the creation of the universe. Evidence for the big bang national schools observatory. The big bang big bang explained in 2 minutes universe. The big bang theory says that the cmb would be mostly the same, no matter where you look. It is the idea that the universe began as just a single point, then expanded and stretched to grow as large as. The bestsupported theory of our universes origin centers on an event known as the big bang. A timeline of everything we know about the origins of our universe.
The origins of the universe facts and information science. That is, it took place outside of the natural realm. Big bang quotes 40 quotes on big bang science quotes. It is a video clip and science article analysis activity. The laws of science begin to break down the further back you look. The big bang wasnt the beginning, after all forbes. The timeline of the big bang and everything we know. The big bang theory represents cosmologists best attempts to reconstruct the 14 billion year story of the universe based on the sliver of existence visible today. All the energy and matter which exists today came from this original explosion the evidence for this theory comes from two observations. All you need to know at gcse is that current evidence suggests that the universe is expanding see red shift and that matter and space expanded violently and rapidly from a very small initial point. He began writing online in 2010, offering information in scientific, cultural and practical topics. If the forces which pull matter together are weaker. Big bang theory explains how the universe was formed and why it is still expanding.
He has taught science, math and english at the university level, both in his native canada and in japan. Particle physicist dr david krofcheck of the university of auckland is featured in the video clips where he describes the relationship between big bang theory and experiments being conducted at the large hadron collider. What are some science experiments that have been shown on. Comprehensive gcse computer science uk teacher revision resources for ks3 key stage 3, ks4, ks5 a level. Understanding of how the universe began, useful for students studying science. Science quiz on planets, galaxies, big bang theory. The big bang theory the universe gcse physics single. Students were treated to appearances from dr simon singh who explained the big bang theory.
Its essential feature is the emergence of the universe from a state of extremely high temperature and densitythe socalled big bang that occurred. Some scientists used to believe in the steadystate theory. I mean, is the universe expanding into nothing, or does the universe create space as it. Cosmologists have predicted that stars didnt form for another 180 million years. The big crunch is one of the scenarios predicted by scientists in which the universe may end. For almost a century, the term has been bandied about by scholars and nonscholars alike. Examining the cmb also gives astronomers clues as to the composition of the universe. The big bang theory is supported by evidence that space is expanding, including the redshift of light from distant galaxies and the existence of cosmic background radiation in all directions. According to the big bang model of how the universe began. We then look at how the expansion of the universe is accelerating. The big bang is the best theory we have to explain the birth and existence of the universe.
The big bang theory describes the development of the universe from the time just after it came into existence up to today. Just like many others, it is based on einsteins theory of general relativity. Two of these theories are called the big bang and the steadystate. The universe is out there, waiting for you to discover it.