Asteroids, comets and meteors
These three short online lessons discuss asteroids, comets and meteors.
These three short online lessons discuss asteroids, comets and meteors.
Other objects in the solar system are discussed in this online textbook viz. asteroids, meteorites, comets and dwarf planets.
This YouTube video explains how river basins are formed.
This YouTube documentary highlights the ecological and socio-economic importance of the Tana River Basin in Kenya.
This diagram, Vernier scale use 0.02 scale measurement is 19.44 mm, illustrates how to read the length of the given object using vernier calliper.
This 32 minute long YouTube video investigates the water contamination problems in Tanzania, with specific focus on Dar Es Salaam.
This 11 minute long YouTube video describes the various causes and types of water pollutants.
This YouTube video investigates what water pollution is and some examples and effects of water pollution.