We have learned about how the Earth is tilted, we have seasons because of the tilt of our Earth and the angle of the Sun's rays on our planet and other planets for that matter. An underlying question stays in the back of our minds...how long is the Earth going to orbit the Sun before it crashes into it? The reason we don't crash into the Sun is because of INERTIA. Ahhh! Inertia, the lazy explanation for objects resisting change. If an object is at rest it doesn't want to move... Or if an object is in motion the object is too lazy to stop, turn about, or zigzag. It just wants to keep moving in a straight line.... Newton's First Law of Inertia: "An object at rest will stay at rest and an object in motion will stay in motion with a constant speed and direction unless "hit" by something. In our Solar System the conditions are perfect for the planets to be where they are. Gravity and inertia. Gravity pulls the Earth to the Sun, inertia causes Earth to keep moving in a straight line as it keeps moving ahead. Our busy little Solar System, every move orchestrated by the gravity of the Sun, all of the planets resisting change and creating a beautiful dance in the heavens.
Ugh! That was too poetic!
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Mrs. TaylorI love science! Everything about the world is interesting and never boring. I love to study plants, animals, insects, and people. My favorite subjects are my students who are the most unique organisms on the planet! Categories |