PPT-The Nucleus and Nuclear Radiation

All matter is composed of combinations of elements There are 115 elements that have been discovered so far but only 92 elements that occur in nature The smallest piece of an element that retains it characteristics is an atom. Knowledge of subatomic particles has led to many advancements- unfortunately besides the advancements in power plants there has been costs-nuclear warfare and waste. Nuclear Decay. The nucleus-cluster of protons and neutrons-is in the centre of an atom. Is radiation dangerous? . Is nuclear power a good choice?. . What is nuclear energy?. Are nuclear energy and nuclear bombs both dangerous? . Guiding Questions. The Power of the Nucleus. Bravo – 15,000 kilotons. Nuclear physics . . what’s inside the nucleus and what . holds it together . . what is radioactivity, half-life . . carbon dating . . Nuclear energy. nuclear fission. nuclear fusion. . : 1.Introduction to Nuclear and Particle Physics . A.Das. and . T.Ferbel. 2.http. ://www.southampton.ac.uk/~ab1u06/teaching/phys3002/course/07_alpha.pdf. Alpha Decay . we have seen before, . a. -decay represents the disintegration of a parent to a daughter through the emission of the nucleus of a helium atom, the transition can be characterized as . Is radiation dangerous? . Is nuclear power a good choice?. . What is nuclear energy?. Are nuclear energy and nuclear bombs both dangerous? . Guiding Questions. Radioactive Decay. Discovered by Antoine Henri Becquerel in 1896. By. Dan Intartaglio &. Joel Skivington. History. Robert Brown. 1773-1858. -Discovered in 1831 by Scottish botanist Robert Brown. -Suggested . the nucleus played a key role in fertilization and development of the embryo in plants. Unit Test Thursday. Nuclear Radiation. Video. Marie Curie, Nobel Prize Winner . What is Radioactivity?. When nuclei of unstable isotopes gain stability by undergoing changes. These reactions:. are called nuclear reactions. nucleus is present in all eukaryotic cells and surrounded by a nuclear membrane . .This organelle has two major functions: . it stores the cell's hereditary material(DNA) . and . it coordinates the cell's activities,. WJEC Physics Unit 2 - 2.9. Nuclear Fusion. H – Deuterium nucleus. 2. 1. H – Deuterium nucleus. 2. 1. Two deuterium nuclei approach one another. The two nuclei collide. Nuclear Fusion. H –nucleus. Dr. Mamoun Ahram. Faculty of Medicine. Second year, Second semester, 2014-2014. Structure and function of a nucleus. A repository of genetic information. The nuclear membrane, known as the nuclear envelope, adds an additional level of gene regulation post-. information and serves as the center of regulatory activity . The nucleus is enclosed in a nuclear envelop. A typical interphase plant cell nucleus contains one to . several. nucleoli. lying free in the nuclear matrix. Atom structure. 1. 2. 3. What is the radius of an atom?. What is the radius of a nucleus?. 1x10. -10. m. 1x10. -15. m. Atom structure. An isotope is an element with a different number of neutrons. Isotope. L-35 Nuclear structure. what’s inside the nucleus. what holds it together. isotopes. radioactivity. half-life. L-36 Nuclear energy. nuclear fission. nuclear fusion. nuclear reactors. nuclear weapons. Structure: pancreatic acinar cells. Identification: nucleus, nucleolus, heterochromatin. Heterochromatin. Nucleus. Nucleolus. Pancreas . 158. Pancreas . 158. 32409. Nuclei with . nucleoli. 32409.