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Ch.7 Lesson 2Seasons

• ( 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):OrbitEquator

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Ch.7 Lesson 2Seasons

( How does Earth move around the Sun?)

(Vocabulary):OrbitEquator

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Ch.7 Lesson 2Seasons

• 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):OrbitEquator

Orbit.

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Ch.7 Lesson 2Seasons

• 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):OrbitEquator

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Ch.7 Lesson 2Seasons

( 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):OrbitEquator

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Ch.7 Lesson 2Seasons

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):OrbitEquator

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Ch.7 Lesson 2Seasons

( 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):OrbitEquator

equator

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Ch.7 Lesson 2Seasons

* 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):OrbitEquator

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Ch.7 Lesson 2Seasons

• ( 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):OrbitEquator