# Evidence

## Our Models

In our process to create the perfect model we had five different tries and different goals for each one. For our first model we were tasked to just try and draw our solar system planets in order. We completed this task with ease and were assigned to create it to scale and with it in the correct order. The next model was to create a poster with a "Planet X" in it and we had to draw it to scale with three different bodies in the poster. Our second to final poster was to create multiple data points of a planet our of one data point. We chose to use the orbital period and we three different data points out of this one by using different equations. This process was tedious but it wielded the best results. Our last model was actually two posters. One poster was showing the math and the answer to the orbital period of Planet X, Planet Y, and Earth. It also showed the weight of a 140 Ibs. human on each planet. The second poster consisted of models of the Earth. These models were the Seasons, Temperature, Orbital period, and its Density.

Model 1-3

Model 4

Model 5 (Both Posters)

# Content

## Learning Targets

### Some of the Key Topics that were taught during this unit include

Universal Law of Gravitation:

Newton's law of universal gravitation states that every particle attracts every other particle in the universe with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Gravitational Force:

Gravitational Force is determined by the objects mass and distance to another object. In the case of gravitational pull the equation is F=G*m1*m2/distance squared. The most defining factor in gravitational pull is the distance.

Convection:

The movement caused within a fluid by the tendency of hotter and less dense material to rise, and colder, denser material to sink under the influence of gravity. This acts as a cycle to cool off the earths mantle and it acts just like a teapot with boiling water. The colder and warmer water go from bottom to top in an oval shape.

Gravitational Constant:

The gravitational constant, shown as the letter G, is a part involved in the calculation of gravitational effects

Equation: 6.67408 × 10-11

Universal Expansion:

Universal Expansion is a theory that is backed up with the Red Shift Law. The red shift law is that stars that are farther away shed off a deeper red color than the ones that are closer. So Agronomists looked at the same star over time and realized that the one star was getting redder over time. Thus they came to the conclusion of the Universe Expands.

Relativity:

Albert Einstein, in his theory of special relativity, determined that the laws of physics are the same for all non-accelerating observers, and he showed that the speed of light within a vacuum is the same no matter the speed at which an observer travels. With that in mind, if you traveled across the universe at the speed of light and came back to Earth, everyone on Earth would have aged over a 100,000 years while you wouldn't have aged at all. This is because the Relativity Theory.

Speed of Light:

Speed of Lights Equation E=mc squared

Speed: 299,792,458 m/s

# Reflection

## 6 C's

This multi step project had many different improvement gaps that needed to be filled. One of these was our Self Reflection. We could've improved on this by creating more time to realize what worked and didn't so we didn't repeat what we did wrong. Another improvement we could've made is that we should of organized our work better to know what we are doing next.

Another thing we needed to improve is our goal setting and time management. We needed to have more focused time to improve and finish our project faster. We could've improved this by setting a 30 min hard grind time to get most of our work done so we could social and wrok later. This method has worked well in the past and it would work well now too. Overall I enjoyed this project and look forward to many more!