alschemes led to the development of chemicals that ignite based on friction John Walker invented matches almost by accident in 1826. matches, simple chemicals heads embedded on a stick are convenient in ways to start a fire, several improvements were made, without patent, leading to the matchbook in 1890 the match helped make smoking popular as well as barbecued leisure. attempts to amplify sound have been ongoing since ancient Greece Charles Wheatstone invented the concept of the microphone in 1827 microphones convert sound waves into electric signals for amplifications torch and transmission after wheatstone furthered progress on the electric telegraph its evolution into the telephone led thomas edison to invent the modern microphone. that is some history.
Blog
-
math grade 5 essay
rounding up numbers- 10 plus 10 plus 10 is 30. 40 plus 50 plus 10 is 100. 5 plus 5 plus 6 is 16. 3 plus 3 plus 3 is 9. 20 plus 20 plus 60 is 100. 40 plus 60 plus 100 plus 100 is 300. 1000 plus 1000 plus 5 is 2005. 6 plus 6 plus 6 plus 6 is 24. 4 plus 4 plus 4 plus 4 is 16. 5 plus 5 plus 5 plus 5 is 20. 6 plus 4 plus 4 is 14. 1 plus 1 plus 1 plus 1 is 4 8 plus 8 plus 4 is 20. 2 plus 2 plus 2 is 6. 88 plus 2 plus 2 is 92. 60 plus 60 plus 40 is 160. 5 plus 5 plus 5 plus 10 is 25 5 plus 6 plus 6 is 17. 65 plus 5 plus 5 is 75 18 plus 2 plus 20 is 40.
-
science grade 5 essay
fruits- fruits can come in many colors, shapes, and sizes. fruits usually have seeds, but some do not. fruit have sugar in them, but it is natural sugar. fruits are very good for you and they are sweet. some fruit may not taste sweet though. fruit is good for you because they have vitamins in them. fruits can grow off of trees and bushes. not all fruit are edible though. before going into the woods and picking a fruit to eat, you need to specify it to make sure the fruit is an edible fruit. not a toxic fruit. lots of fruit can also look like veggies, but if they have seeds they are fruit. some fruit are: tomato, banana, apple, orange, pineapples, cucumber, strawberries, grapes, etc.
-
Math grade 5 assignment
Subtraction with missing numbers. 9 – ? = 4 answer is 5. 10 – ? = 5 Answer is 5. 4 – ? = 2. Answer is 2. you have 5 lemons and give away 2. 3 is left. you give away 3 lemons and 0 is left. lets say you have 100 lemons. you give 90 away. how many is left? 10. you give away 6 lemons. 4 is left. you have 100 rocks. you give away 5 to mom and 65 to your friend how many is left? 30. you have 600 rocks and give away 70. how many is left? 530. you buy 88 watermelons and you eat 5. how many is left? 83. you have 90 gallons and give away 78 gallons. how much is left? 8 gallons. you buy 60 lemons and give away 40. now you have 20 lemons. you give 16 lemons to your friend, and now you have 4 lemons. you give away 2 lemons to mom and now you have 2 lemons. you eat 1 lemon and give the other to the neighbor. 5 minus 4 is 1. 560 minus 20 is 540.
-
History grade 5 assignment
Economic growth in great Britain created a need to tunnel under the Thames River. Mark Brunel Patented a tunneling shield, inspired by the ship worm. The shield protects tunnel workers from cave-ins. Mark brunel was the first to successfully tunnel under the Thames River. which was completed in 1843. Increasingly sophisticated tunneling devices were increased the scope of modern tunneling accomplishments. Road designs began to improve in the 1700s, John McAdam invented the modern paved road method in 1816. the McAdam road is rather shallow, the layers of crushed stone is durable and efficient. McAdam advertised his road through books and by its own success, improvements in road-building led to the modern interstate system which is the backbone of our modern system. Hospitals were built by the church to provide charity to the sick and needy .Laennec invented his Stethoscope at a teaching hospital in France after watching a particular children’s game, The Stethoscope provides a non-intrusive way of investigating inside of our body, Laennec published his invention and researching in a book and the invention began to improve and spread rapidly.
-
Science grade 5 assignment
Onions and garlic are basically cousins. they are different though in there own way. Onions are very good for you, and they contain antioxidants. they also can prevent crazy sells that can cause cancer and other diseases. onions are kind of spicy, but also taste good like they are tangy too. When you are cutting an onion, it may make you cry. This is because onions protect themselves with chemicals that can get in animals eyes. if an animal bites the onion, it will spread the chemical that burns your eyes and the animal will probably leave it. onions can be used in salads, dishes, soups, and snacks too. Garlic is also good for you. Garlic are bulbs that contain the cloves. the cloves are the garlic. Garlic is also spicy and tangy, and can be used in many dishes. soups, main dishes, appetizers, and many other dishes. Garlic can also prevent crazy cells and other diseases. Garlic has antioxidants too. Garlic may burn your eyes if you touch it and rub your eyes, but usually wont burn like a onion does.
-
Science grade 5 weekly assignment.
the taproot of a parsnip is the primary root. the white root is edible after first growing. carrots- there are many things you can make with carrots. snacks, drinks, soups and stews, salads, main dishes, dessert. Major source of vitimans from carrots support immune system and eyesight. carrots are very important because they can improve your eyesight. they very good for your immune system too. they are very delicious and healthy. they are used in many many dishes. they are sweet too.carrots have been used for sweetener for hundreds of years. Potatoes- potatoes are full of water. they are moist but rough on the outside. people can survive on them because they have water and food. they can be eaten raw but are usually not. people bake them into many things, such as.. fries, chips, baked potatoes, mashed potatoes, and many other things. lots of things such as potato chips are not always good for you, but you can make them healthy by making them homemade. humans can survive on potatoes for a long time. potatoes are a delicious meal and there are also sweet potatoes they are sweeter then normal potatoes while potatoes are yellow tan inside sweet potatoes are orange.
-
Math grade 5 weekly assignment
Simple addition 5 plus 2 plus 3 equals 10. 7 plus 1 plus 2 is 10. Addition with carrying 100 plus 200 is 300. 100 plus 260 is 360. Addition with problems- 245 plus 55 plus 99 plus 2 is 401. you are a car detailing business owner. you have detailed 3 cars. a SUV-75 dollars, a sports car 55 dollars, and a van 60 dollars. they all owe you money. that adding them up is 180. simple addition – 1 plus 2 plus 3 is 6. 100 plus 200 is 300. 400 plus 600 is 1000. 500v plus 600 is 1100. 400 plus 500 is 900. 60 plus 40 plus 50 is 150. 1 units plus 2 units is 3 units. 500 units plus 1 unit is 501 units. 600 units minus 400 units is 200 units. 500 units plus 1000 units is 1500 units. 600 units minus 500 units is 100 units. 1000 units plus 800 units is 1800 units.400 units plus 1600 units is 2000 units. one unit plus 100000 units is 100001 units. you have 20 apples. you sell 4 for 5 dollars.how many apples do you have now. answer 16. you have 55 cent. you buy 5 apples for 5 cent. you have 5 apples and 50 cent. you decide to sell the apples for 10 cent each. they sell and now you have 100 cent. you want to buy lemons, but you do not have enough. so you buy 10 oranges for 10 cent each. you eat one but you sell them for 20 cent each. now you have 180 cent. you need 300 for the lemons. so you buy 4 watermelon for 50 cent each. now you sell them for 100 cent each. you gained 400 cent now you can buy the lemons. you buy 10 lemons. one for mom. one for dad. one for grandma. one for grandpa. one for your sister. one for your brother. one for your friend. one for your aunt and uncle. and one f or your cousins. now you have 1 lemon. now you eat the lemon. you have 500 cent leftover and you can buy groceries, clothes, and toys for your family.
-
History Grade 5 Weekly Assignment.
The flour milling industry was booming in young America, but it was ripe for improvement. Oliver Evans was a creative inventor who got started by solving the millings industry problems. He developed process automation pioneered high pressure steam engines. He was a creative marketer who secured important clients and they promoted his inventions. The contributions made by Evan led to modern manufacturing technology and air conditioned environments. Gun firing mechanisms started becoming more sophisticated in the 1500s. John Forsyth invented the percussion cap system to solve problems he identified while duck hunting. it fired faster then older systems produced less smoke and worked in wet weather. Forsyth didn’t succeed in business but others especially in America did. the system led to modern bullet designs. Military necessity during aftermath of french revolution created demand for new ways to feed soldiers a french chef named Nicolas appert invented canning processing in response to the government prize money. canning cheaply preserves food taste and nutritional over time glass jars were quickly replaced by tin cans. armies were the primary market internally today canned food are important role in the diets of even first- world citizens.
-
Science grade 5 assignment
Plants will deteriorate after harvest. such as, you pick a flower. it always dies soon after. that is because the plant cannot no longer get the food and water it needs to thrive. Plants get energy from the sun, and that allows then provide a sugary- food that they can survive and thrive on. Plants often will die when the sun is not out. because they cant get the energy from the sun to get the nutrient they need. Some plants will survive, while others wont. Trees usually can survive because they are stronger and get more nutrient so they survive. There are lots of different plants like trees, bushes, weeds, flowers, etc. Mushrooms are fungi. but not all are edible. some are though. but if you are in the forest, or your front/back yard and you see a mushroom. Do not eat it. even if you are sure it cant hurt you, often many die from eating it when they think they will be fine, but do not survive. that is my assignment.