Use your
knowledge to explain how heavy ships float. Try to use as much scientific
vocabulary as possible. (gravity, upthrust, forces, balanced, unbalanced, surface area)
You need an equal amount of upthrust and gravity for a ship to float safely on water.If you were to build a ship it would be a good idea to make a large base because,the larger the base the better it floats.E.x. when you are on your feet in the water you are about to sink,but when you lie on your back you are more likely to float. This is because the base of our back are larger than our feet.The Titanic sank because there was more gravity than upthrust,upthrust is a force that pushes upwards.
To make a ship you need buoyancy by choosing lightweight, sturdy materials and dispersing the weight of the ship across the hull. The hull, or body of the ship below the main deck, is very wide and has a deep base line which helps with upthrust. Large ships such as freighters, naval vessels and cruise ships usually use displacement hulls, or hulls that push water out of the way, to stay afloat. A round- bottom displacement hull looks like a large rectangle with rounded edges to get rid of drag. The rounded edges minimize the force of the water against the hull, allowing large, heavy ships to move smoothly along. If you somehow lifted a cruise ship out of the water and looked at it standing a few hundred feet away, the hull would look like a huge capital letter "U," depending on the size of the keel. The keel runs from the bow to the stern and acts as the backbone of the ship.
Buoyancy, The ability for something to float in water. Hull, The main body of a ship. Keel, The structure of the base on a ship.
Today in science was really fun! We made boats with one piece of paper and some sellotape then tested them in water and put a load of cubes on top to see how many it could take. We also put a cube in to oil, maple syrup and water. The cube sank faster In oil!
Objects float in water when their weight is balanced by the up thrust from the water. The object will not sink until the weight of the water it pushes out of the way is the same as the weight of the object. It is all about displacement and gravity.
How do heavy ships float?
ReplyDeleteYou need an equal amount of upthrust and gravity for a ship to float safely on water.If you were to build a ship it would be a good idea to make a large base because,the larger the base the better it floats.E.x. when you are on your feet in the water you are about to sink,but when you lie on your back you are more likely to float. This is because the base of our back are larger than our feet.The Titanic sank because there was more gravity than upthrust,upthrust is a force that pushes upwards.
To make a ship you need buoyancy by choosing lightweight, sturdy materials and dispersing the weight of the ship across the hull. The hull, or body of the ship below the main deck, is very wide and has a deep base line which helps with upthrust. Large ships such as freighters, naval vessels and cruise ships usually use displacement hulls, or hulls that push water out of the way, to stay afloat.
ReplyDeleteA round- bottom displacement hull looks like a large rectangle with rounded edges to get rid of drag. The rounded edges minimize the force of the water against the hull, allowing large, heavy ships to move smoothly along. If you somehow lifted a cruise ship out of the water and looked at it standing a few hundred feet away, the hull would look like a huge capital letter "U," depending on the size of the keel. The keel runs from the bow to the stern and acts as the backbone of the ship.
Buoyancy, The ability for something to float in water.
Hull, The main body of a ship.
Keel, The structure of the base on a ship.
Today in science was really fun! We made boats with one piece of paper and some sellotape then tested them in water and put a load of cubes on top to see how many it could take. We also put a cube in to oil, maple syrup and water. The cube sank faster In oil!
ReplyDeleteGREAT LESSON THANK YOU MISS DAVIES!!!
Objects float in water when their weight is balanced by the up thrust from the water. The object will not sink until the weight of the water it pushes out of the way is the same as the weight of the object. It is all about displacement and gravity.
ReplyDelete