• Categories

  • Most Popular Questions

  • Recently Viewed Questions

  • Recent Answers

    Daigrepont on Can an earthquake cause air tu…
    Benedict on How did God come into exi…
    joshua on How does the human body g…
    Ian on How did God come into exi…
    Sidra on How did God come into exi…
  • Recent Questions

  • Blog Stats

    • 2,178,960 hits
  • Visitors since 11-3-08

    counter create hit
  • Terms and Conditions

  • Warning

    We are doing maintenance on this site, so some posts may disappear for a short time. Sorry. Normal service will soon be resumed...
  • Pages

  • February 2008
    M T W T F S S
        Mar »
     123
    45678910
    11121314151617
    18192021222324
    2526272829  
  • Archives

  • Meta

Why is the earth round?

Why is the earth round?
Thomas Pullen from Warwickshire (age 5-14)
Jimmy from Surrey (age 5-14)
Katie from Kent (age 5-14)
Freya Eakins from Swansea (age 5-14)

Why is the world round?
Ruis Walton from Lincolnshire (age 5-14)

Why is the earth shaped like a sphere?
Jakie from Stockton on Tees (aged 5-14)
Arthur Dixon from Hampshire (aged 5-14)

I wonder why the world is round
Emilia from West Midlands (aged 5-14)

Why is the world round? Why couldn’t it be a different shape?
Catriona Staunton from Kent (aged 5-14)

Advertisements

2 Responses

  1. Strictly, it isn’t a perfect sphere – it’s what’s called an oblate spheroid – a sphere that’s been squashed a bit. Its round because of how it formed – from a spinning area of matter drawn together by gravity

  2. This is a very good question !

    The Earth and the sufficiently heavy bodies in the solar system will adopt a round shape because of …gravity.
    Gravity is a force directly proportional to the mass of the object and is equal in all direction. As the planet forms, its matter is pulled towards the centre of the planet in equal measure, leading over time to a spherical object.

    …but building on this idea, the Earth is also rotating, and this create a centrifugal force (pulling away from the rotation axis) that create a slight bulge at the equator while flattening the poles.

    A good illustration can be found here: http://www.hockeycosom.net/planet_earth_complete/composition_planet_earth.html

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: