MEAINING OF STATELLITE
Satellite is a body that orbits or moves round a planet e.g. the moon is a satellite of the earth Thus, the satellites or moons of the planet in our solar system are shown below
PLANET NO OF SATELLITE
Mercury None
Venus None
Earth 1
Mass 2
Jupiter 12
Saturn 9
Uranus 5
Neptune 2
NATURAL AND ARTIFICIAL SATELLITES
The moons that orbit the planets in solar system are natural satellite while artificial satellite are man made bodies, which were launched by various countries, and now orbiting the earth e.g.
COUNTRY YEAR OF FIRST LAUNCH FIRST SATELLITE
USSR 1957 Sputnik 1
USA 1958 Explorer 1
Australia 1964 Blue streak
France 1965 Asterix
Japan 1970 Osumi
China 1970 Dong fang hang 1
United kingdom 1971 Prospero X-3
India 1979 Rohini 1
Israel 1988 Ofeg 1
Nigeria 2003 SAT 1
EVALUATION
- Give the meaning of satellite and name two planets with their number of satellites
- State four examples of countries, year of first launch and the name of satellites launched by them.
TYPES OF SATELLITE AND THEIR USES
- ASTRONOMICAL SATELLITES: They are used for observation of distance plants, galaxies and other outer space objects.
- BIO SATELLITE:These are used to carry living organism especially for scientific experimentation.
- OBSERVATION SATELLITE: They are used for geographical studies, photographing of areas, map marking.
- WEATHER SATELLITES: These are used to monitor the weather conditions in the atmosphere and supply the information to ground stations.
- COMMUNICATION SATELLITE:They are designed purposely to send information quickly from one place to another.
- RECONNAISSANCE SATELLITES: They are used for military or intelligence purposes, such as observing enemy location or troop movements.
- SPACE STATION SATELLITES: They are designed for human being to live on in outer space. They are only designed for periods of weeks, mouths or years.
- NAVIGATIONAL SATELLITES: These used radio time signals, it enables mobile receivers on the ground to determine their exact location.
EVALUATION
- What is reconnaissance satellite?
- Give four examples of satellite and their uses.
GENERAL EVALUATION
- Give the meaning of satellite and name two planets with their number of satellites.
- State four examples of countries, year of first launch and the name of satellites launched by them.
- What is reconnaissance satellite?
- Give four examples of satellite and their uses.
- Explain the term satellite and distinguish between natural and artificial satellites.
WEEKEND ASSIGNMENT
- _______ is a body that moves round the planet A. Earth B. Sun C. Satellite D. Stars.
- One of the following has the highest number of satellite in the solar system
- earth B. Saturn C. venues D. Jupiter.
- The following are examples of planet except ____ A. moon B. earth C. mass
- Jupiter.
- ___ are used for monitoring the dry and wet season of a particular area
- Astronomical satellite B. Weather satellite C. Bio satellites D. Communication satellite.
- Sputnik 1 was launched in 1957 by USSR while SAT 1 was launched in ___ by ___ A. 1970, Japan B. 1958, USA C. 2003, Nigeria D. 1988. Israel.
THEORY
- Explain the term satellite and distinguish between natural and artificial satellites.
- Explain how artificial satellites have improved whole world.
See also
CALCULATION OF GRAVITATIONAL FORCES
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