I just got home from our field trip. Wow, that was definitely the best field trip that I've ever been on! I will never forget all of the important safety tips I learned and all of the images of the earth forming. Well I'm going to go to bed now, I'm so tired! Goodnight.

We just stopped for dinner, while we were eating our teacher explained to us how dangerous UV Radiation is and what could happen if we don't protect ourselves properly. I never realized how dangerous the sun actually is to us. We learned about how UV-B and UV-C Rays, which have short wavelengths, are mostly blocked out by our ozone layer, while the UV-A Rays have a longer wavelength and most of it makes it through the ozone. UV-A Rays can be very dangerous though if you over-expose it can be bad for your health. If you over-expose yourself then you put yourself at risk for sunburn, which is extremely painful, and can cause skin cancer, premature aging, wrinkly skin, and it can damage your immune system. If you over-expose your eyes too much then you could end up getting a cataract, blindness, or macular degeneration. If you get cataract you have a cloud over your eye and your vision is blurred, cataracts are treatable though. But if you get macular degeneration then you have that for life, it causes your central vision to be blurred, so you would need to look to the side of someone to see them clearly. The paler your skin is, the greater risk you are for becoming sunburn, the darker your skin is, the less of a chance that you have to become sunburn.
Although there are many bad things that come from UV Radiation, there are also some health benefits. By getting some UV Radiation, we produce melanin, which absorbs UV Rays and can help us to not get burnt, also our body needs UV Rays to produce Vitamin D, which we need to carry calcium throughout our body. The recommended amount of sunlight per day is 15 minutes, if you are going to be out longer than this, make sure that you wear sunscreen to stay protected from sunburn. And always make sure you wear sunglasses when you go outside with 100% UV Protection so that you can avoid eye damage, it is NOT recommended to have 15 minutes of sunlight to your eyes, so make sure to always wear sunglasses.
Were just starting to pack up to go back to our current time now, so I have to go. Bye.

We are learning about the formation of the ozone layer and what it does to protect us from the sun's rays. We are up in the sky trying to watch it form, but there is not much to see, although there are hundreds of comets and meteors flying into the earth because there is no atmosphere there to stop them. A lot of these objects flying at the earth contain water and ice, and that is melting and creating the early stages of our oceans. Our atmosphere today was probably formed by photosynthesis, which released oxygen and helped to form our current atmosphere. When our atmosphere formed it began raining, which helped to form the rest of our oceans. Our atmosphere today is composed of oxygen, helium, hydrogen, and other gases. The formation of the Ozone layer is what allows modern life to exist today. Our Ozone layer is destroyed and reformed by a series of chemical reactions with the sun's UV Rays. It starts as O2(Oxygen) then is broken apart and joins with another to form O3(Ozone), then it either goes back toO2, or O, then goes through the process. This is extremely important to life on earth because O3 blocks out the Sun's harmful rays. Without this process we would not be able to live on land and the only life that would be able to survive on earth would have to be extremely deep under water.

We are just leaving the extremely early stages of the earth, it was very cool. We watched the earth form along with all of the other planets from the rotating cloud of gas which contained planetesimals and eventually formed into the earth and the early planets. The earth was a giant ball of hot, molten material and all of the metals sunk to the core, which created the hot, and dense core we have now. We also went ahead and watched the giant impact happen, there was a giant explosion when the two planets collided. The earth was knocked to the side of its axis and the atmosphere was just completely blown off, while the other planet exploded into millions of pieces, which will eventually form into our moon, it was an awesome sight.

I'm so excited! Today is the day that we get to go back to the beginning of the earth. Well I have to go now, ill try to update this on what we're doing after each stop.

Lately in science class we have been learning about the formation of the earth and the early atmosphere, so tomorrow, we are going on a field trip in the time machine to numerous time periods from the earth's formation. We have also been learning about the danger of UV Radiation, which apparently was very dangerous back then, and today, and how our ozone layer formed and why it is so important. I'm going to bed now to get rested for tomorrow.