

People once thought the
Earth was
Today we know it’s shape is
a
Earth’s Location

Earth is located in a collection of
stars called a
The kind of galaxy is called a
spiral galaxy and Earth is
located on one of the arms.
 The name of the galaxy that
Earth is located in is the

Solar System
rd
 The Earth is the 3 planet of
nine planets that revolves
around the sun.
The Earth’s orbit is
the curved path it
follows as it travels
around the sun.
Earth’s Travels

People once believed everything
traveled around the Earth.

Now we know it is the Earth that
moves. It both rotates and
revolves.

The spinning of the Earth on
it’s axis which causes day and
night is called

The motion of the Earth
around the sun which takes
about 365 ¼ days or one year
to complete is called a
Figure the Speed


The moon is 240,000 miles
from of the Earth and it
travels around the Earth once
every 27 days. How fast is it
traveling?
 x diameter= circumference
The Earth’s Tilt
The Earth has 4 seasons.
Summer, Spring, Autumn, and
Winter.
 These seasons are caused by
Earth’s


The Earth’s axis is
the imaginary line
around which the
Earth spins (rotates)
causing the Earth to
tilt toward and away
from the sun during
different times of
the year.

The seasons depend
on which side of
Earth is tilted toward
the sun.
 When the Northern
Hemisphere is tilted
toward the sun it is
summer in the north and
winter in the south and
vice versa.
Day vs. Night

During the summer the
number of hours of
daylight is longer and
the number of hours of
darkness is shorter.
•During the winter it
is just the opposite.
Longer nights and
shorter days.
Solstices

The solstices are
the longest and
shortest days of
the year.
 The Summer Solstice is
the longest and the winter
solstice is the shortest.
Northern Hemisphere


During the Summer Solstice,
the Earth is tilted as far
toward the Sun as possible.
During the Winter
Solstice, the Earth is
tilted as far away
from the Sun as
possible.
Winter
Solstice for
Northern
Hemisphere
Summer
Solstice for
Southern
Hemisphere
Summer
Solstice for
Northern
Hemisphere
Winter
Solstice for
Southern
Hemisphere
Equinoxes

During the Equinoxes the
Earth is neither pointing
toward or away from the
Sun.

During the Spring and Fall
equinox the length of day
versus night is equal.
Moon Phases

The phase of the moon you see
depends on how much of the
sunlit side of the moon faces
Earth
Moon Phases
New Moon
Full Moon
Waxing
Crescent
Waning
Gibbous
1st Quarter
3rd Quarter
Waxing
Gibbous
Waning
Crescent
Moon Phases
The shadow on the moon always disappears from
right to left when the moon is growing. If you can
see the right side of the moon, then it is growing.
The moon always disappear from left to right as
well. So if you can see the left side then it is getting
smaller.
What phase?


When the moon grows it is
said to be
When the moon gets smaller
it is said to be