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Vocabulary
More Vocabulary! YAY
True or False?
Fill in the blank
Short Answer! (FUN) :)
100
What is density?
the amount of mass per unit volume of a material
100
What is Archimedes' principle?
It is that buoyant force on an object is equal to the weight of the fluid the object displaces.
100
Is it true that density is calculated by dividing volume by mass?
False! Density is calculated by dividing mass by volume
100
A ________ is a material that can flow and have no definite shape
Fluid
100
How can you determine whether a silver spoon is made of pure silver or a mixture of metals
Find out the density of real silver, then place the fork into water using the displacement method, and find out the density of that. Compare both and there you have it!
200
What is rectangular solid?
It is a six-sided block in which all sides are rectangles
200
What is a hydrometer?
It is an instrument that measures the density of a liquid.
200
True or False? Hot-air balloons can fly because they are less dense than air
True!
200
The amount of force exerted per unit area is called _________.
Pressure
200
Is there a difference of the buoyant force on fish as it swims from the water's surface into deep water?
No, the buoyant force always stays the same
300
What is fluids?
materials that can flow and have no definite shape
300
True or False? Air pressure increases as you climb a mountain
False! Air pressure decreases as you climb a mountain
300
The combination of all the forces acting on an object is called the __________.
Net Force
300
Why is it important to use a strong material when making an air tank used by scuba divers for swimming deep below the ocean surface
What is Because as the scuba diver goes deeper into the ocean surface, the pressure compresses therefor, if strong material isn't used, the tank would compress, and scuba diver won't have air and then he will most likely die... :(
400
What is atmospheric pressure?
It is the force exerted per unit area by air particles
400
True or False? Only solid objects can exert forces
False! All objects can exert forces
400
___________ states that the buoyant force on an object is equal to the weight of the fluid the object displaces
Archimedes' Princaple
400
What are three ways to determine the volume of a baseball
find out the density and mass and divid them, use a measuring tape or the displacement method
500
What is buoyant force?
It is the upward force on an object in a fluid exerted by the surrounding fluid.
500
True or False? The depth to which a hydrometer sinks in fluid depends on the density of the fluid
True!
500
A ___________ property is a property of a material that can be measured without changing the identity of the material
Physical
500
Compare the buoyant force on two objects submerged in water that have the same volume but different densities.
There is no difference, every object has the same buoyant force