Buoyancy - Forces, Fluids and Density Test Flashcards
Answer the following question -
What is a Non-contract force?
A force that is acting on an object without physically touching or applying force on that object. Example: gravitation, magnetism, and friction force.
Answer the following question -
What is a Contact force?
A force that is acting on objects using physical force such as touching or apply force using an object. Example: wind. pushing, and pulling.
Define the following word: Buoyancy
The ability or tendency to float on water, air, or some other fluid.
Answer the following question -
What is a balance force?
Balance forces are forces that work to cancel each other out. Example: you and your friend pushes each other at the same time. In this moment, there is no movement net one way or another. causing the forces to balance each other out and cell each other.
Answer the following question -
What is a unbalance force?
Unbalance force is a force that is applied to one direction and is greater than the force that is applied to the opposite direction. Example: pushing you friend without you knowing, this causes them to move the direction you pushed them.
Answer the following question -
Explain how an object floats or sinks?
Float - An object such as a cork, would float as the buoyancy force is greater than the gravitational force.
Sink - An object such as a metal ball would sink as the gravitational force is greater than the buoyancy force.
Define the following question -
What is a newton?
A unit scientists use to measure force
- the amount to accelerate one kilogram by meter per second
Answer the following question -
Does buoyancy force and gravitational force change in different liquid?
The greater the density of the fluid, the less fluid that is needed to be displaced to have the weight of the object be supported and to float.
Answer the following question -
What is the Archimedes Principle?
Buoyant force = the gravitational force (weight) at the object that displaces it.
Answer the following question -
What is a swimming bladder for a fish?
A specialized organ that controls a mixture of air and water, that allows to control the swimming depths of that fish.
Answer the following question -
How does the fish control the swimming blander to rise in depth?
The fish can rise in depth by increasing and allowing more air to be displaced in the swimming bladder, causing the water in there to be displaced and increase in volume, allowing the fish to rise in depth.
Answer the following question -
How does a fish control the swimming blander to decrease in depth?
The fish can decrease in depth by allowing more water to be displaced, displacing the air and decreasing in volume, decreasing the depth.
Answer the following question -
What is another object other than the fish that used such method to decrease and increase in depth? What is it called?
The submarine is another object that uses such method, that ballast tank of the submarine is the swimming bladder of that fish. It used compressed air inside the ballast tanks, it releases it to increase in depth.
