Motion

Before we started the unit about motion and, barely knew what it was and how I would be able to describe what motion is. But now I feel very confident about it, and I believe I can thoroughly explain what motion is and when an object is in motion.

I learned that an object is in motion when its distance from another object is changing. To determine whether or not an object is in motion, you usually use a reference point. A reference point is a place or object used for comparison to determine if something is in motion. Stationary objects make good reference points. If a reference point is not stationary then it would be very hard to determine if an object is in motion. There is also such thing as relative motion and that is when you can state that whether or not an object is moving depends on the reference point that you choose. I also learned that scientists all over the world use the same measuring system, that way communication is much more easier and clearer. The system of measurement is called the International System of Units or, in french Systeme International (SI). SI units are used to describe the distance an object moves. The (SI) unit of length is the meter. But that's not it, I learned all about speed, how to calculate it, same goes to acceleration. Graphing motion is also something that I now know how to do. In this unit we were also taught about Earth's plates, the Theory of Plate Tectonics, and plates movement and why they move.

-Lina Abdelgabar