This document discusses the causes of seasons. It explains that the Earth orbits the sun over the course of 365 days, and its axis is tilted relative to its orbit. This tilt causes different parts of the Earth to receive more or less sunlight over the course of the year, resulting in seasons. Specifically, summer occurs in hemispheres tilted toward the sun, while winter occurs where it is tilted away. Places near the equator experience less variation since the amount of sunlight remains relatively consistent year-round.

2. Ch.7 Lesson 2
Seasons
• ( Objectives )
• The student be able to :
• 1-The Earth orbits around the Sun.
• 2-Understand how seasons change .
• 3-Recognize that seasons are
different in different places around
the world.
(Vocabulary):
Orbit
Equator
2

3. Ch.7 Lesson 2
Seasons
( How does Earth move
around the Sun?)
(Vocabulary):
Orbit
Equator
3

4. Ch.7 Lesson 2
Seasons
• As Earth rotates, it also travels
around the Sun.
• The path Earth takes around the
Sun is called its
• Earth always travels around the
Sun in the same orbit.
• It takes Earth 365 days to
travel once around the sun.
(Vocabulary):
Orbit
Equator
4
Orbit.

5. Ch.7 Lesson 2
Seasons
• Earth leans a little to one side.
• Because of this, half of Earth is
always tilted toward the Sun.
• The other half is tilted away
from the Sun.
• As Earth travels in its orbit, The
side that tilts toward the Sun
changes.
(Vocabulary):
Orbit
Equator
5

6. Ch.7 Lesson 2
Seasons
( Why do Seasons Change?)
We have winter when our part
of Earth tilted away from the Sun.
(less sunlight hits our part, so we
get less light and heat.)
(Vocabulary):
Orbit
Equator
6

7. Ch.7 Lesson 2
Seasons
We have Summer when our part
of Earth tilted toward the Sun.
(more sunlight hits our part, so we
get more light and heat.)
(Vocabulary):
Orbit
Equator
7

8. Ch.7 Lesson 2
Seasons
( What are seasons like in
other places?)
is an imaginary line
across the middle of Earth.
It separates the northern part of
Earth from the southern part.
(Vocabulary):
Orbit
Equator
8
equator

9. Ch.7 Lesson 2
Seasons
* When it is summer in the
northern part of Earth, it is
winter in the southern part.
* Places near the equator don’t
have very different seasons
They have the same weather most
of the year ??
Because the amount of sunlight
hits the equator stays about the
same all year.
(Vocabulary):
Orbit
Equator
9

11. Ch.7 Lesson 2
Seasons
• ( Check for understanding:)
• 1-What is an orbit, an
equator?
• 2-Why does one part of
Earth get more light and
heat in the summer?
• 3-When it is winter above
the equator, what season is
it below the equator?
(Vocabulary):
Orbit
Equator
11