How did the Earth begin?
Earth norany of the
otherplanets in the Solar
1) A Hot Cloud of Gas
2)Billions of Droplets
4) The Earth
Earth’s Formation Process
3) A Clump
By the action of
put together by
It received a series of
collisions and continued on
What is the Earth made of ?
How long is a day?
The Earth takes 23 hours,56 minutes
and 4 seconds to rotate on its axis.
This number is known as siderealday
Exactly how long is a
Every year the Earth travels once around the
Sun. This journey occurs every 365.24 days.
It is this extra
the need for
Was the Earth at the centre
of the Universe?
The Earth was once believed to be the
centre of the universe.That is, people
believed the Sun and the
hat the Sun was the centre of the universe.
Wheredid the name
« Earth » come from?
Most of the planets in the
solar system are
namedafterdeities of Roman
For example,Uranus is a
The origin of Earth’s
The name Earth comesfrom the Germanicword
« ertho » whichmeans « the soilthatwas the
source of all life ».
Because 70% of the planet is covered
by water.We live in the remaining 30%
Why is the Earth called the Blue
It is a photograph of planet Earth taken in
1990 by a spacecraft named Voyager 1.
The photograph was taken from a distance
of about 1,6 billion kilometers.
Is the Eartha Pale Blue Dot ?
Carl Sagan, who was part of the Voyager 1’s
team, suggested taking this picture.
Earth is shown as a fraction of a pixel
against the vastness of space.
Recommended video: Pale Blue Dot - Carl Sagan
What is sospecial about the
The Earth is the
on the surface and is the onlyplanetwith an
The Earth is the only place in the
universewherehuman life is possible.
1) Whichisthecorrectsequence of
1) A cloud of gas 2) A clump
3)TheEarth 4)Billions of droplets
2) Whatisthemaincomponent of Earth’score?
3) Howlongis a siderealday ?
a) 23 hours 56 minutes 4 seconds
b) 23 hours 55 minutes 4 seconds
c) 22 hours 56 minutes 4 seconds
a) TheEarthwasthe center of theuniverse.
b) TheSunwasthe center of theuniverse.
c) TheSunwasthe center of the Solar System.
5) WhydoesFebraury 29th exist?
a) BecausetheEarthdoesnotorbittheSunin a wholenumberof
b) BecausetheEarthdoesnotrotateonits axis in a wholenumber
c) BecausetheEarthmakes a journey of 365
daysaroundtheSun once a year.