Sunday, 29 May 2016

THE EARTH, THE MOON AND THE SUN

1.The Earth
  • The Earth is roughly (approximately) spherical.

Earth's Movement around the Sun

  • ROTATION: The Earth also spins on its own axis once every 24 hours. This causes day and night on Earth. On the part of the Earth that is facing the sun, it is day; on the part of the Earth that is facing away from the sun, it is night.



  • ORBIT / REVOLUTION : The Earth travels around the Sun once every year 365 days and 6 hours ( we've got a Leap-year every four years because of this).




SEASONS: When the Earth orbits the Sun it's a little wonky. Earth's axis is tilted.When the Northern hemisphere is tilted towards the Sun it's Summer and when the Northern hemisphere is tilted away from the Sun is Winter.

2. The moon

The moon is roughly (approximately) spherical and is smaller than the Earth.

The moon travels around the Earth once every 28 days.

We only see the part of the moon that is lit by the Sun. So sometimes we see the whole Moon and sometimes we only see part of the Moon.



3. The sun
  • The sun is a star and gives out heat and light.
  • It is approximately spherical in shape . It's much bigger than the Earth.
  • The Earth is just one of eight planets that travel around the sun. The other planets are called Mercury, Venus, Mars, Jupiter, Saturn, Uranus and Neptune.




4. Eclipses

Solar eclipse


-->
A Solar Eclipse occurs when the moon goes in front of the sun and blocks most of the sun's light from the earth.
It is dangerous to look at a solar eclipse directly, even if you have sun glasses or smoked glass.



Lunar eclipse

A lunar eclipse occurs when the moon passes through the shadow of the earth. It is not dangerous at all to look at a lunar eclipse because the moon does not make its own light.



No comments:

Post a Comment