Ch. 1- Lesson 1 Earth’s Motion

Ch. 1- Lesson 1 Earth's Motion

Periods 1,3,5,7- Students should have these notes copied in notebooks with 3 questions on each page, and on 62,64, 66 Vocabulary and a bellringer on NB pg 61 Seasons descriptions on NB 63 Ch. 1 Outline on NB 65

Earth and the Sun

Lesson 1-1

? The nearest star to Earth is the Sun.

? The Sun is approximately 150 million km from Earth.

Earth and the Sun (cont.)

Lesson 1-1

Earth moves around the Sun in a nearly circular path.

Earth and the Sun (cont.)

Lesson 1-1

? The path an object follows as it moves around another object is an orbit.

? The motion of one object around another object is called revolution.

? Earth makes one complete revolution around the Sun every 365.24 days.

Earth and the Sun (cont.)

Lesson 1-1

Earth orbits the Sun because the Sun's gravity pulls on the Earth.

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