NATURAL SATELLITES

Any natural heavenly body that orbits around a planet e.g. moon for earth, tritan for Saturn and triton for Neptune.

Asteroids/Planetoids

  • Also called minor planets.
  • Are small fragments of rocks left going around the sun when the solar system was formed
  • Found between Mass and Jupiter
  • Are 1500 in number
  • They sometimes collide with each other and planets due to Jupiter’s gravitational pull causing them to move in erratic orbits.

Comets

  • Heavenly bodies which appear to have a head and a long tail
  • Made of ice, dust and frozen gas
  • The head is made of many particles of dust, rock and frozen gases.
  • Their tail is made of gases and points away from the sun.
  • Move around the sun in extremely long and oval orbits
  • Their orbits cross the earth’s orbits e.g. Halley’s Comet which appears after every 76 years.

 

Meteoroid

  • Small heavenly body which strays from its orbit in the solar system and enters the earth’s atmosphere at very high speed.

Meteor

  • A meteoroid which is burning out due to friction after entering the earth’s atmosphere.

Meteorite

  • Remains of a meteoroid which have reached the earth’s surface or incompletely burnt up meteoroid.
  • When they fall they sink into the ground forming craters
  • They are rich in iron

 

The Moon

  • A natural satellite
  • Receives its light from the sun and reflects it onto the earth.
  • It revolves around the earth
  • Takes 29.5 days to complete one revolution around the earth
  • Its orbit is almost circular
  • As it revolves around the sun it appears in various shapes ranging from crescent/new moon, half moon, gibbons moon and full moon.
  • Has gravitational pull which causes the rising and falling of the ocean level
  • As the moon orbits around the earth it creates an event called eclipse.

Eclipse

-Phenomenon occurring when the rays of the sun are blocked from reaching the earth or the moon.

 

Solar/Sun Eclipse

  • The moon comes between the earth and the sun
  • The moon’s shadow is cast on the earth
  • The

sun appears to be covered by darkness

 

Lunar/moon Eclipse

  • The earth comes between the moon and the sun
  • The earths shadow is cast on the moon

• The moon appears to be covered by darkness

 

See also

BUSH FALLOWING IN WEST AFRICA

MINING

MINERALS IN EAST AFRICA

PROBLEMS ENCOUNTERED IN FIELD WORK

MINERALS AND ROCKS

SUBSCRIBE BELOW FOR A GIVEAWAY

Building & maintaining an elearning portal is very expensive, that is why you see other elearning websites charge some fees. Help to keep this learning portal free by telling mum or dad to donate to help you and others to continue to use this portal. Thank you so much. Click here to donate

Leave a Comment

Your email address will not be published.

error: Content is protected !!
Exit mobile version