Warm-up #1

• Provide at least 2 examples of non-renewable energy resources.– Write one advantage and one disadvantage for each.

• Provide at least 2 examples of renewable energy resources.– Write one advantage and one disadvantage for each.

• Nuclear energy is a ____________ resource.– What do you predict is an advantage or disadvantage

of nuclear energy?

Nuclear Fusion• Combining 2 atoms– Some mass changed into energy– Much more energy than fission

• Requirements– High speed collisions– High temperatures

• Occurs naturally– Sun/stars

• Limits to use– High temperatures– No container– Requires lots of energy

• Enormous potential• Future outlook– Uses:– Power cities– Transportation– Clean water

• Advantages• Disadvantages

Nuclear Fission• 1 atom split into 2– Uranium 235 + neutron– Chain reaction– Water

• Generate electricity• Where?– Reactors– Power plants– Aircraft carriers

• Issues– Waste– Control

Nuclear Power Plant• Reactor– Containment dome– Fuel rods– Control rods– Produces heat

• Moderator (boiler)– Heats other water– Creates steam

• Turns a turbine• Powers a generator

– Creates electricity

• Cooling Towers – Water cooled and reused

• Spent fuel– Radioactive– Storage issues

Nuclear Accidents• Nuclear power has been used since the 1970s• Scale – 1-7– Incidents 1-3– Accidents 4-7• 14 ever–2 level 7»Chernobyl – Ukraine – 1986»Fukishima – Japan – 2011

Nuclear Fission

Advantages DisadvantagesEES 1st

EES 4th

EES 6th EES 7th