https://padlet.com/204543/mlq6timc7rd4 Relativity en-us 2017-12-14 13:57:09 UTC 2018-01-11 15:50:06 UTC hello@padlet.com 204543 https://padlet.com/204543/mlq6timc7rd4/wish/216147567 Relativity (also known as Galilean relativity) states that all things move relative to each other. To show this, imagine you're on a train, moving 60 miles per hour. Now, you pass by your friend, who is observing the train, who is standing still. From your perspective, it appears that your friend is moving. From your friends perspective, it appears that you are moving. Now, imagine you throw a ball, with the direction of the train at a speed of 30mph. The ball therefore, would not be moving 30 mph, but 60(the speed of the train)+30(the speed of the ball.) 
Now imagine this on a cosmic scale. Nothing is ever standing still, because the Earth is moving around the Sun, and the Sun is moving with the Milky Way galaxy, which is moving through space, and space is expanding. So therefore, we have theorized that nothing moves, but everything moves relative to each other.]]> 2017-12-14 13:58:53 UTC https://padlet.com/204543/mlq6timc7rd4/wish/216147567 204543 https://padlet.com/204543/mlq6timc7rd4/wish/216528883 2017-12-15 15:59:27 UTC https://padlet.com/204543/mlq6timc7rd4/wish/216528883 204543 https://padlet.com/204543/mlq6timc7rd4/wish/216529401  Spacetime is Einstein's theory that space and time combine to be one thing. Einstein also stated that if an object is big enough, that it will contort the fabric of spacetime, creating the force of gravity. Space-time also states that time is the 4th dimension. As stated above, space-time, according to einstein, can be a "fabric". Some believe that if you create enough energy, you could break the spacetime continuum, and travel through time.

 Spacetime is important because now we have an answer to the question, What is the fourth dimension? The answer is time. But how does time fit in? Time, is theorized to be one with space. Nothing in the universe would work without time. When you write a letter or article, you don't write where you are in space only, you write where you are in space and time, or spacetime. Time and space are one, but before Einstein, we never had a theory that combined gravity, space and time, all into spacetime.
 ]]> 2017-12-15 16:00:43 UTC https://padlet.com/204543/mlq6timc7rd4/wish/216529401 204543 https://padlet.com/204543/mlq6timc7rd4/wish/217398626  Time dilation is Einstein's theory that the faster that you move through space, the slower you move through time, since time and space are one thing. To help visualize this, imagine a graph, with the y axis as space and the x axis as time. If you are not moving through space, the line would be straight up and down, and therefore you would be moving through time as fast as possible. Now, if you are moving as fast as you can through space (the speed of light), the line will be horizontal, and therefore not moving through time, and anywhere in between.]]> 2017-12-20 00:19:36 UTC https://padlet.com/204543/mlq6timc7rd4/wish/217398626