SPM Science Blog
Question 3:Figure 2 shows different types of satellite orbits labelled A, B, C and D. (a) Label the types of orbits in Figure 2 with the following abbreviations. GEO HEO LEO MEO (b) Based on Figure 2, name the type of orbit for GPS satellites. Answer:(a) A: HEOB: MEOC: LEOD: GEO (b) MEO Question … Read more
Question 1:Figure 1 shows an example of the orbit for satellite X which has an orbital period of 12 hours.(a) Based on Figure 1, name the type of satellite X. (b) Give one example of application of satellite X. Answer:(a) GPS satellite (b) For navigational purposes Question 2:(a) State three features of a GPS satellite. … Read more
Question 1:What is the meaning of Global Positioning System (GPS)? Answer:Global Positioning System (GPS) is a navigation system which gives information on location and time to its users in all weather conditions. Question 2:How does GPS function? Answer:In GPS,• Control segment sends signals using Earth’s antenna found in the control station to GPS satellites in … Read more
Question 1:State five types of satellite orbits. Answer:• Low Earth Orbit (LEO)• Medium Earth Orbit (MEO)• High Earth Orbit (HEO)• Geostationary Orbit (GEO)• Geosynchronous Orbit (GSO) Question 2:(a) Draw a diagram to show the apogee and perigee of a satellite in an elliptical orbit.(b) Explain the apogee and perigee of a satellite in an elliptical … Read more
Question 1:Diagram 1.1 shows three satellites used in a satellite communication system.Diagram 1.1(a) Name type of wave used in a satellite communication system. [1 mark](b) State two reasons why three satellites are needed in transmitting information. [2 marks](c) Diagram 1.2 shows two types of wave in a radio communication system.Diagram 1.2(i) Draw wave K in the … Read more
Question 1:Diagram 1.1 shows three types of electronic components used in a radio receiver.Diagram 1.1(a) Name electronic components W and Y. [2 marks](b) State the function of electronic component X. [1 mark](c) Diagram 1.2 shows a black diagram of a radio receiver.Diagram 1.2(i) Write any two electronic components, W, X or Y from Diagram 1.1 into … Read more