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Nuclear Energy. Chapter 12 Section 3. Standard. S 6.6.a Students know the utility of energy sources is determined by factors that are involved in converting these sources to useful forms and the consequences of the conversation process

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nuclear energy

Nuclear Energy

Chapter 12

Section 3

  • S 6.6.a Students know the utility of energy sources is determined by factors that are involved in converting these sources to useful forms and the consequences of the conversation process
  • S 6.6b Students know different natural energy and material resources and how to classify them as renewable and non-renewable
language of the discipline
Language of the Discipline
  • Nucleus
  • Nuclear fission
  • Reactor vessel
  • Fuel rod
  • Control rod
  • Meltdown
  • Nuclear fusion
anticipatory set
Anticipatory Set
  • Line up 15 dominoes to form a triangle
  • Knock over the first one
  • What happened?
  • Set it up again and remove the 3rd line
  • Knock them over
  • What happened now?
nuclear fission
Nuclear Fission
  • Central core of an atom that contains a proton and neutron is a nucleus
  • Nuclear reactions convert matter into energy
  • E=mc2
  • E is energy
  • M represents mass
  • C is the speed of light
nuclear fission1
Nuclear Fission
  • The splitting of an atom’s nucleus into 2 smaller nuclei
  • When the neutron hits the U-235 nucleus, the nucleus splits apart into 2 smaller nuclei and 2 or more neutrons
  • If any neutrons strikes another nucleus, the fission reaction is repeated
  • More neutrons and more energy are released
  • Becomes a chain reaction (like the dominoes)
nuclear fission2
Nuclear Fission
  • If a nuclear chain reaction is not controlled, it creates a huge explosion.
  • Atomic bomb
  • A few kilograms of matter explode with more force that thousands tons of dynamite
  • If it is controlled, it can be used to generate electricity
  • Read Summary on page 494-495
nuclear power plants
Nuclear Power Plants
  • Heat released from fission is used to change water into steam. The steam then turns the blades of a turbine to generate electricity.
  • Uranium fuel is used to power these plants
  • Nonrenewable resources
  • Reactor vessel: where nuclear fission occurs
  • Fuel Rods: holds pellets of uranium
  • Control Rods: inserted between fuel rods to slow the speed of chain reactions.
pros and cons
Pros and Cons
  • Safety concern
  • Meltdowns of fuel rods
  • Caused a series of explosions
  • Radioactive materials in environment
  • Don’t pollute the air
  • Help solve the problem of global warming
  • Read summary on page 496-497
quest to control fusion
Quest to Control Fusion
  • 2 hydrogen nuclei combine to create a helium nucleus, which has slightly less mass than 2 hydrogen nuclei. The lost mass is converted to large amounts of energy.
  • Nuclear Fusion: combining of 2 atomic nuclei to produce a single larger nucleus
  • Sun produces energy
  • Water is a source of its fuel
  • Renewable resource
  • Only happens at extremely high pressure and temperature
  • Read Summary on page 498
checking of understanding
Checking of Understanding
  • What happens in a nuclear chain reaction?
  • What is the purpose of a control rod?
  • What is nuclear fission?
guided practice independent practice
Guided PracticeIndependent Practice
  • Worksheet/workbook
  • Stop! Have your answers checked by teacher!
  • Study Guide problems