IB DP Physics: SL复习笔记8.2.4 The Greenhouse Effect
Greenhouse Gases When radiation from the Sun hits the Earth, it is radiated back from the Earth's surface as long-wave radiation A greenhouse gas is a gas that absorbs this re-radiated radiation, t...
IB DP Physics: SL复习笔记8.2.3 The Solar Constant, Albedo & Emissivity
The Solar Constant Since life on Earth is entirely dependant on the Sun’s energy, it is useful to quantify how much of its energy reaches the top of the atmosphere This is known as the solar consta...
IB DP Physics: SL复习笔记8.2.2 Black-Body Radiation
Black-Body Radiation Black body radiation is the name given to the thermal radiation emitted by all bodies (objects) All objects, no matter what temperature, emit black body radiation in the form o...
IB DP Physics: SL复习笔记8.2.1 Conduction, Convection & Thermal Radiation
Conduction, Convection & Thermal Radiation Thermal energy transfers from hotter areas to cooler areas by the processes of: Conduction Convection Radiation Objects will always lose heat until th...
IB DP Physics: SL复习笔记8.1.6 Safety Issues in Nuclear Power
Safety Issues in Nuclear Power Safety Measures for Workers Several measures are in place to reduce the worker’s exposure to radiation The fuel rods are handled remotely ie. by machines The nuclear ...
IB DP Physics: SL复习笔记8.1.5 Energy Generation
Energy Generation You need to know about the main ways of generating electricity: The equipment involved The advantages and disadvantages Calculate power obtained for different setups These revisio...
IB DP Physics: SL复习笔记8.1.3 Primary & Secondary Energy Sources
Primary Energy Sources Primary energy sources are found in nature and have some stored energy capacity To be a primary energy source, there must be: No processing or refining Stored energy must occ...
IB DP Physics: SL复习笔记8.1.2 Sankey Diagrams
Sankey Diagrams Diagrams are used to represent energy transfers These are sometimes called Sankey diagrams The arrow in a Sankey diagram represents the transfer of energy: The end of the arrow poin...
IB DP Physics: SL复习笔记8.1.1 Specific Energy
Specific Energy The amount of energy that a fuel can provide for the amount of fuel used is an important consideration for the modern world In order to compare fuels by unit, either mass or volume ...
