Title and Label in TOC

• 12. Themes, Maps, Dividing the Globe Eval• 13. Earth Systems: Rotation Revolution, and

Tilt• 14. The NON Earth

Inner Planets Outer PlanetsNOT a planet

On the top third of a page in your notebook, make a simple drawing of our solar system.

My Very Educated Mother Just Served Us Nachos.

How might life on Earth be different if we were closer to the sun? Farther?

What is the sun?

Myth: the sun is a ball of burning fire.

Myth: The sun is big.

Reality: The sun is glowing, not burning like a fire. The heat is not produced by burning (a chemical reaction), but rather by fusion (a nuclear reaction).

Myth: The sun is hot.

Reality: Although it’s really big to a person, it’s a rather average sized star.

Well, this one’s true. The sun is REALLY, REALLY hot. Its core is about 27 million degrees F. Your average campfire… less than a thousand degrees F.

•Most of Earth’s energy comes from the sun.

•Life on Earth depends on this solar energy.

The Moon•How far is it from Earth?•What is its size compared to Earth?•How often does it orbit Earth?•In what ways does the moon affect Earth?

Rotation, Revolution, and Tilt

• Rotation: Earth rotates in a west-to-east direction, once every 24 hours.

• Revolution: Earth revolves in an elliptical orbit, once every 365 ¼ days.

• Tilt: Earth is tilted 23 ½ degrees on its axis.Using what you’ve learned today, answer the following question by drawing/coloring a picture on one page in your notes:How might Earth be different if it didn’t rotate, revolve, and tilt?