Umhlaba
Ikhaya lethu: iplanethi eyaziwayo kuphela enempilo kanye nama-oceans amanzi abandayo emkhathini wayo.
NASA
Izwe elilodwa esiyazi ngezilwandle eziphezulu, umoya ophefumulayo nokuphila.
Iplanethi i-Earth iyiplanethi enkulu kunazo zonke futhi eqinile kakhulu. Ingxenye engaphezu kuka-71% yeplanethi ifakwe amalwandle, futhi i atmosfera yayo ye-nitrogen-oxygen nendawo yamakhemikhali ivikela impilo kusuka emithonjeni eminingi yokukhanya okubi kwelanga.
I-spin axis yayo ihamba ngama-23.4 ° ku-orbit yayo, obangela amasimu. I-Satellite ejwayelekile eyodwa, iMhlaba. I-orbit data lapha yiyo ye-Earth-Moon barycenter, indawo yokulinganisela yeqembu.
Inyanga ezindaweni zolwazi
Amasu
Amathuluzi nama-lessons asebenzisa amamodeli alula ukufundela kuphela. Akufanele asetshenziswa ukuhlola, ukuhlela umsebenzi noma noma yiluphi ukhetho lokusebenzela. Izitifiketi zimahhala futhi aziqinisekisiwe. Funda isichazamazwi sezinto ezifundiswayo