what is the difference between pwr and bwr
Boiling water reactor The boiling water reactor (BWR) is a type of light water nuclear reactor used for the generation of electrical power. It is the second most common type of electricity-generating nuclear reactor after the pressurized water reactor (PWR), also a type of light water nuclear reactor. The main difference between a BWR and PWR is that in a BWR, the reactor core heats water, which turns to steam and then drives a steam turbine. In a PWR, the reactor core heats water, which does not boil. This hot water then exchanges heat with a lower pressure water system, which turns to steam and drives the turbine. The BWR was developed by the Idaho National Laboratory and General Electric (GE) in the mid-1950s. The main present manufacturer is GE Hitachi Nuclear Energy, which specializes in the design and construction of this type of reactor.
IB Primary Years Programme The International Baccalaureate Primary Years Programme (PYP) is an educational programme managed by the International Baccalaureate (IB) for students aged 3 to 12.[1] While the programme prepares students for the IB Middle Years Programme, it is not a prerequisite for it. The subject areas of the PYP are language, social studies, mathematics, science and technology, arts, and personal, social and physical education. Students are required to learn a second language during the programme. Assessment is carried out by teachers according to strategies provided by the IB, and with respect to guidelines to what the students should learn specified in the curriculum model.