*objects colliding with earth ?

• Meteoroids/ Meteors

  obects in space smaller than asteroids that are called meteors or shooting stars (appear as stars moving across the sky) when in earth's atmosphere .

  usually present little risk as they burn in the atmosphere due to heat from friction.

  large ones can create shockwaves.
• Meteorites


  parts of meteoroids that collide with earth with around 500 of them reaching earth's surface each year.

  if an object is alrge enough, it can cause local damage or even damage affecting the whole plant.
• Objects that could possibly cause damage to Earth

  " the mass or diameter of the asteroid

  "the closest posible approach to earth

  
  

  an asteroid passing further from earth may be a bigger risk than one passing closer if its mass is greater.