Ezra Harris

Category: Uncategorized

  • What Roman Aqueducts Are – History of Inventions – Lesson 27

    An aqueduct is a man-made channel that lets the water flow into the big cites. We use running water daily, and for an example, your shower will have running water when you turn it on or when you are using your faucet to wash your hands or to clean the dishes. The Romans didn’t invent the aqueduct, but they perfected the design of the aqueduct. Here is an image of how a Roman aqueduct works: 

    The water would be collected from a lake or river and taken down a tube to the inspection shafts, and then it would go through to the settling tank. From there, the water would go over a bridge, and then the water would be led into the distribution tank and then into different places in the city. I like the bridges for the water because they let the river go through, and they can hold water at the top.

  • How Roman Bridges Were Built – History of Inventions – Lesson 26

    Romans loved the shape of a circle because they thought the shape of a circle is the perfect shape. That is where the Romans got the inspiration for arches. The Romans got the love of the shape of a circle from the greeks who thought the circle was also a perfect shape next to a sphere. The Romans built the foundations of the bridge using cofferdams, cofferdams were used to build the bottom of the pillars for the Roman bridges. A cofferdam is made by tying big wood logs together to form a wall, then they pump out the water from inside the barrier. once they are finished the water is pumped back into the cofferdam, and then they remove the barriers. I used wondered how workers were able to build the pillars underwater it makes a lot more sense now. Here is a video about cofferdams: 

  • Sundial Bridge Bike Trails

    Yesterday Me, my Dad, and some of our friends from our church went to turtle bay park. The reason we were at turtle bay park is that we were going to go biking on the trails near turtle bay park. The first ride we did was pretty hard on the last part because it was steep. Then we went down, but about halfway, we turned onto a different trail, which eventually led back to the sundial bridge (BTW the sundial bridge is over the Sacramento River and is in turtle bay park). Then after a small break, we rode our bikes to a ribbon bridge, which was further up the Sacramento River. Here is a map of the trail that we took. And here is a picture of the bridge: 

  • Duolingo Part 2

    Since I have started using Duolingo, I have learned a lot of French. And I have learned how to use and change doulingo settings, for example, you can change whether or not to have speaking lessons when you are learning, and whether or not to have listening exercises. A speaking exercise is where it gives a sentence. Then it has you repeat that sentence. For example, if you are in a crowded building or if you have a bad microphone, then it won’t pick up your voice correctly. 

    It will think you didn’t say it right, so Duolingo has a button that will disable that type of exercise for you for one hour. If you want to change it back you go to your profile then you click “settings” and there should be options for different exercises.

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