To Do Today: Students will be able to…

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Presentation transcript:

To Do Today: Students will be able to… Discuss the motions of the earth and define reference lines. Discuss properties of the sun.

Motions of Earth & reference lines Day & Night Cause: Rotation – the spinning of the earth on its axis.

Motions of Earth & reference lines Axis – is an imaginary line through the poles of earth. Rotation of the Earth takes 24 hours or 1 day in a west to east direction.

Motions of Earth & reference lines This makes the sun, moon, & stars, appear to rise in the east and set in west. ½ Earth has day, ½ has night.

Motions of Earth & reference lines How we know the earth rotates: Motion of sun, moon, stars Pendulum changes direction slowly

Motions of Earth & reference lines Missiles flying a straight path across earth seem to curve Bulge at equator Space flight has proved it.

Motions of Earth & reference lines Special Lines Equator – imaginary line halfway between north and south pole. Latitude – lines measure N and S. 0° to +/- 90 °

Motions of Earth & reference lines Longitude – lines measure E and W. 0° to 180° east and west Prime meridian - 0° longitude line that runs through Greenwich, England

Time to rotate into a worksheet