Sun and Earth Relation

Bellringer

​Define Latitude and Longitude

Open Ended

Define Latitude and Longitude

Today we will analyze the
Earth and Sun relation.
So that I will describe the
earth’s tilt. Its rotation and
the effects it has.

Rotates: It Spins on an Axis (an imaginary tilted line that starts at the north pole, goes through Earth's center, ends at the south pole)

Revolves: It Orbits Around the Sun (takes a circular path around the center of the solar system)

Earth is Always Moving

Rotation of the Earth

o The earth rotates about

an imaginary line that

passes through the

North and South Poles of

the planet. This line is

called the axis of

rotation.

The Earth’s Tilt is 23.5

degrees

Rotation of the Earth

o It is for this reason, that it

seems that the sun:
• Rises in the East
• Is south at noon
• Sets in the West
• The rotation occurs from west to

east over a 24-hour period

• This rotation causes the cycle of

day and night

6

o Since Earth is round and opaque, the sun can

only illuminate one side at a time

o This is why when it is

daytime in America, it is
night in Australia

Rotation of the Earth

7

o Because the Earth’s axis is

tilted, our planet is
in different positions
during the year, giving us
4 different seasons

Revolution of the Earth

7

o The solstices mark the points at

which the poles are tilted at their
maximum toward or away from the
sun.

o The seasons are marked by

solstices and equinoxes

Summer Solstice

Winter Solstice

● shortest night of the year
● sun is farthest north
● first day of summer
● June 21 in Northern

hemisphere

● longest night of the year
● Sun is farthest south
● first day of winter
● December 21 in Northern

hemisphere

Australian Christmas

10

● The equinoxesoccur

when the Earth is
between solstices, it is
spring and fall

● Day and night have

almost same duration all
over the planet

● Equinoxes occur on March

21 and September 23 in
the Northern Hemisphere

Revolution of the Earth

o At the equator, the
sunlight hits the
Earth’s surface at a
90˚ angle, which
results in a more
concentrated
amount of sun in a
given area.

Why is it hot at the equator and

cold at the poles?

Multiple Choice

Star that Earth moves around

• Sky

• Day

• Sun

Multiple Choice

Day and night are caused by

• Earth's revolution around the sun

• Earth's rotation on its axis

• Earth's involvement in eclipses

Multiple Choice

Imaginary line through the center of the earth (from the north pole to south pole)

• axis

• orbit

• pole

• tilt

Multiple Choice

The Earth's tilt is ______degrees

• 23.5 degrees

• 17.3 degrees

• 30.2 degrees

Multiple Choice

The Sun's radiation strikes the Earth more directly between the tropics of Capricorn and Cancer. This is called.....

• An equinox

• Solar incidence

• A solstice

• Seasons

Multiple Choice

This diagram shows a(n)....

• Solstice

• Summer

• Equinox

• Winter

Multiple Choice

Where is the solar radiation the most direct?

• The Arctic Circle

• Tropic of Cancer

• Equator

• Tropic of Capricorn

Multiple Choice

What is the latitude line that marks the start of the polar zone in the southern hemisphere?

• 
  Arctic Circle

• Antarctic Circle

• Tropic of Cancer

• Tropic of Capricorn

Multiple Choice

The spinning of the earth on its axis is called______

• Revolution

• Rotation

• Turning

Multiple Choice

The earth orbits around...

• The Moon

• Mars

• Me

• Sun

Multiple Choice

How many days does it take the Earth to go around the sun?

• 365

• 3650

• 306050

• 365000

Multiple Choice

Earth's rotation on its axis is what causes ______________________________.

• 
  shadows to change throughout the day

• weater

• seasons

Multiple Choice

True or False: The Sun revolves around the Earth

• True

• False

Multiple Choice

Earth's orbit (circular motion) around an object (the sun) is called its

• Rotation

• Revolution

Directions: Draw and color the next diagram in your notebook. Make sure to include all the labels.