History 4, Lesson 140: Review

Lesson 136: John Roebuck was born 1718.  As he got older he became interested in chemistry. He became very familiar with the history of Sulfuric acid. In 1746 he made the lead chamber process. Sulfuric acid is very dangerous. If it comes in contact with your skin, it burns! The lead Chamber Process is just glass jars in a lead lined room. To make the sulfuric acid, Roebuck mixed Sulfur+Saltpeter+water= Sulfuric acid.

Lesson 137: The spinning Jenny was made by James Hargreaves 1764. Before the Spinning Jenny It took the whole family to weave. The spinning jenny is capable of spinning several threads at once. It was very helpful and thread price lowered. People were mad because they weren’t making as much money.

138: Richard Arkwright was born 1732 in England. He invented the spinning frame in 1769. It can spin thousands of threads at once just using the power of water! Arkwright died in 1792.

Lesson 139: James Watt was born in 1736 who became a Scottish inventor. In 1764, he made a steam engine. The steam engine is one of his most popular inventions. Most people remember who he is because of his steam engine. If you would like to see how it works, CLICK HERE. Watt died in 1819.

I hope you enjoyed!



History 4, Lesson 125: Review

125: Lesson 121: Gottfried Leibniz was born in 1646 as the son of a professor. he published his first book at age 19 and started college at age 15. By the time he was 20 he had a license in law! He invented the Leibniz wheel witch was crucial for calculators.

Lesson 122: The Piano is a very interesting instrument. It is actually in the percussion musical group because of how the keys hit the strings. The little white and black keys are little levers. The piano was invented some time in the 1700s by Bartolomeo Cristofori. Before the piano there were many instrument a lot like the piano.

Lesson 123: The Thermometer was invented by Daniel Fahrenheit. He wad born in 1686. The thermometer measured temperature. It is sealed off from the environment and it measured between the boiling point and the freezing point.

Lesson 124: The Seismometer is a tool that tells you when the ground is moving. This saved many people from earthquakes. People new immediately when was coming thanks to this device. The Chinese first invented the seismometer in 132 AD. Then in 1731 a guy named Nicholas Cirillo used a pendulum to make one.

I loved learning about the Seismometer! It’s amazing how something that can be so simple helped so many people. Without it the world earthquakes would be killing millions!

Hope you enjoyed!


History 4, lesson 145: Review

Lesson 141+142 (141: Soda Water + 142: Joseph Priestley) Joseph Priestley was born in 1733. Soda Water was invented by Joseph Priestley in 1767. It was by accident that soda water was invented. Priestly was holding a bowl of water over a beer vat and saw that the water became carbonated. He infused carbon dioxide into water and noticed the water become very bubbly. This little accident created soda. On the 1 of August in 1774 Priestley discovered Oxygen! Now, imagine the world without Coke-a-Cola! Most kids drink more soda than juice and more juice than water! I wonder if we would have some other super popular drink if we didn’t have soda.

Lesson 143: The Weighing Scale was invented Richard Salter in the 18th century. People would paint waits to look like a lager weight. My teacher gave me an example: If you paint a 5 pound weight to look like a 10 pound weight, people think they are buying 10 pounds of bananas. But really they are buying only five pounds worth. This was a very clever trick to steal your money back then. It’s great that we have weights though. Most of the time now we know what price we will pay just buy weighing it!

Lesson 144: Boring Machine was invented John Wilkinson invented the boring in 1774. He used it to drill better holes in cannons. It drill that drills a long hole into a solid piece of metal to make a barrel. Its funny thinking how we went to using molds to make barrels to using a machine to do this! Here is a video showing how it works.

I really enjoyed learning about soda water! The way it was made is amazing! Just one small accident created History!

Hope you enjoyed!



125 lesson 126: Coke-Fired Blast Furnace Lesson 127: Newcomen Steam Engine Lesson 128: Thomas Newcomen Lesson 129: The Octant

lesson 126: Coke-Fired Blast Furnace: Abraham Darby is inventor of the coke-fired blast furnace. He used charcoal that was baked. Baking the charcoal took all of the impurities out of it. It tuned ore to iron!

Lesson 127+128: Newcomen Steam Engine: Newcomen was born 1664 The Newcomen Steam engine is an engine that works using steam. It was invented by Thomas Newcomen in 1712. There is a fire underneath a tank of water that is being heated. a little piece in the opening lets the steam out and lifts the pump that sitting over the opening. Then the piece turns over and lets the pump back down. It’s hard to explain, so If you would like to see how it works, Click Here!

Lesson 129: The Octant: John Hadley was born in 1682. He invented the Octant around 1730. Using the Octant, you could now look directly at the sun and get the distance. It really helped people with how far things were in the sky!The most interesting thing I learned this week was about the Newcomen steam engine! I like how something so simple to some made a huge impact on history and how this machine made many things work!

I really hoped you enjoyed!



Hey it’s Hailey here and I have a few questions for y’all!

Do you like Harry Potter books/movies? If so who is your Favorite Teacher? I LOVE Harry Potter books and series. My favorite teacher is Proffeser Lupin!

What is your favorite cat and dog breed? Tuxedo cats and black and white collies.

What is your favorite movie?Harry potter and Deathly Hallows part 1.

What is your favorite board game? Candy land.

What is your favorite activity? Going outside and searching for bugs, fish, crawdad, and more.

What is your favorite color?BLUE!

Mythical creatures? Dragons and Hippogriphs.

What is your favorite book. Harry potter and the prisoner of Azkaban.