Apogee kick motor Apogee kick motor An apogee kick motor (AKM) refers to a rocket motor that is regularly employed on artificial satellites to provide the final impulse to change the trajectory from the transfer orbit into its final (most commonly circular) orbit. For a satellite launched from the Earth, the rocket firing is done at the highest point of the transfer orbit, known as the apogee, thus giving the engine its name. An apogee kick motor is used, for example, for satellites launched into a geostationary orbit. As the vast majority of geostationary satellite launches are carried out from spaceports at a
Word sort - their spelling or orthography - the more efficient and fluent their reading will be. Word sorts place instructional emphasis on the exploration of patterns that can be detected in the sound, structure, and meaning features of words. Thus, word sorts contribute to orthographic or spelling knowledge, the engine that drives efficient reading as well as efficient writing. There are three different types of word sorts: sound sorts, picture sorts, and word sorts. Sound sorts can take on many forms in a primary classroom and this is essential because sound is the first layer of English orthography. Sound study can