Steps to this lesson:
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1. Read this page on Buoyancy. When you get to the bottom of the page, please include the link to a video or news article that you have found on the internet relating to Buoyancy. Take the time to watch atleast 2 other classmates and give comments on there videos.
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2. Please go to the "Test your knowledge" page. You will need to follow the directions on that page. Once you have completed the review questions, please ensure you submit them to me on google classroom
3. When you think you have a good understanding of the material, you may move onto the assignment. Read the instructions carefully and complete to the best of your ability. If you have any questions, make sure you ask! It doesnt hurt to ask!
What is a Buoyancy?
Buoyancy is the tendancy of a substance to float. Buoyant objects take up space in a fluid. pushing some of the fluid away or displacing it, causing them to float, because the fluid pushes back against the force of gravity.
When an object is in a liquid, the force of gravity pulls it down. The liquid itself has a force that acts against the force of gravity. This buoyant force pushes objects upward.
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Objects that are denser than water will sink (negative buoyancy); objects that are less dense than water will float (positive buoyancy); objects with the same density as water, will hover (or, be suspended - (neutral buoyancy), neither sinking nor floating.)
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Measurement of Buoyancy
Force is a push or a pull on an object, and is measured in Newtons (N). The upward force of a fluid on an object is called its buoyant force, which is also measured in Newtons.
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Applications of Buoyancy
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This principle has important applications in transportation. Ships are designed to float in all types of water, regardless of the density of the water. This is possible because of the Plimsoll Line - which shows how heavily a ship can be loaded in different water conditions.
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Hot Air Balloons - As the air inside the balloon is heated, it becomes less dense than the surrounding air. The buoyant force of the air will push the hot air balloon upwards, until the buoyant force equals the force of gravity.
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See if you can get objects to float and sink now!
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In conclusion, we learned about buoyancy and the important properties and applications that it has. In the comments below, include the link to a video or news article that you have found on the internet relating to Buoyancy. Take the time to watch atleast 2 other classmates and give comments on there videos. Make sure when you are commenting on the videos, you refer to terms or ideas that have to do with buoyancy and your understanding.
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