Natural Law Notes

Physics is the best attempt in explain how things work in our universe. We believe that the universe is made up of matter and energy. Matter is anything that has mass; it takes up space. Energy is found in many forms which you might be able to name some! We will continue to learn more about energy. So as we said matter is anything that has mass. So what is mass? Mass is the amount of matter an object has. Examples of matter: a person, a tree, even air! However light is not an example of matter because it doesn't take up space and doesn't have mass. Energy is the amount of change something has such as temperature, distance, and velocity.

Natural laws govern our universe. These laws tell us how the universe naturally works. So lets say we have a ball and we drop it, the ball will fall right? We test natural laws with experiments. When you set up an experiment you have to be careful to include all necesary parts, but also do not change your variables around because the data can get tricky! Say you are using a smart phone and you're battery keeps dying fast. You think it might be because you keep talking on the phone alot, or your brightness is at the maximum, or you have many icons opened using more data (these three possibilities are called variables). How can you tell what one is using up your battery? If you change all three of these you won't be able to tell which one is affecting your battery most. But if you set up an experiment where you try each one for a certain time period and record the change in battery then you will have a better conclusion.

#energy