Day and Night
Very simply, day is when the sun is
up and we have light; night is
when the sun is gone and we have
darkness and the moon.
There are 24 hours in every day
and for most people this means 12
hours of daylight and 12 hours of
The Earth’s Axis
The Earth spins around on an
axis that runs from the top of
the Earth to the bottom and it
takes 24 hours to make one
complete spin therefore we
have 24 hours in a day.
As the Earth spins half of the Earth is looking to the Sun
and therefore has daytime and half the Earth is away from
the Sun and so is in night time.
When you look at the sky during the day the Sun looks like it is
moving across the sky beginning with a sunrise in the morning and
ending with a sunset in the afternoon.
In fact the Sun is standing still and we are moving around it and so it
only looks like the Sun is moving. It is the same for the moon at night.
Daytime starts with the sunrise and ends with the sunset
and the number of hours between them changes the more
you move away from the Equator.
By the time you get to the top of the Earth at the North
Pole it is possible to have 24 hours of daytime for more
than one month – imagine that!
The Moons size is roughly
1/4th the size of the
Earth. The Moon orbits
the Earth in a orbital path.
The Moon has giant
craters and is made of
magma rocks and dust.
Phases of the Moon
The Earth is about 3 times bigger
than the Moon. The Earth is 70
percent water and 30 percent land.
The Earth is changing rapidly with
houses and transport even people.
The Earth is the only planet with oxygen and is the third
away from the Sun.