Grade 8 Fluids
A closer look at the properties of fluids
Terms in this set (76)
What are the two kinds of Fluids?
Internal and External.
List 3 Internal Fluids.
Blood, LYMPH, Adrenal Hormones.
List 3 external Fluids.
Water, Radon, Krypton.
List the 4 properties of a fluid.
Viscosity, Buoyancy, Density, Pressure.
What kinds of elements are fluids?
Liquids and Gases.
Do smaller molecules travel faster or slower than larger ones?
According to the particle theory is there space or not between the particles?
In a Liquid, are the molecules closer together or further apart than in a gas?
In a Solid, are the molecules closer together or farther apart than in a liquid?
What is every type of matter made up of (according to the particle theory)?
All particles are in constant____?
The resistance of a substance to flow
What is the biggest factor that affects velocity of Fluids?
Temperature. (Closely followed by size and shape)
List 5 protections of fish.
Lateral line, Large tail, mucus, swim (air) bladder, fusiform shape.
What is Density?
Does Gravity affect mass, weight or both?
weight (NOT MASS!!!!!)
FACT: gravity pulls down with a force ____ Newtons.
What is the gravitational force (weight) on a stone with a mass of 5000g?
STEP 1: change g to kg; 5000g/1000=5kg. STEP 2: Find force; 9.8 (5)=49N.
For a ship of any kind to float it's density must be ___ than 1.0glcm cubed.
What is the formula for figuring out weight on other planets?
Your mass multiplied by the gravitational force of the planet you are on.
List 5 uses of pressure in everyday life.
Flushing a toilet, firefighters hoses, dentists chair moving up and down, vacuum cleaner sucking, inflatable mattresses blowing up.
a continuous substance that tends to flow and to conform to the outline of its container: a liquid or a gas
that which has mass and occupies space
a measure of the amount of matter in an object
a measure of how heavy something is where the gravitational force affects the outcome
the amount of 3-dimensional space occupied by an object
an increase in the size of a substance when the temperature is increased
The change of state from a gas to a liquid
The change of state from a liquid to a gas
The change in state from a solid to a liquid
the change of state from a liquid to a solid
the process in which a solid changes directly into a gas (the term is sometimes also used for the reverse process)
a method of measurement that involves placing only the object to be massed on the balance pan to get a reading
a method of measurement that involves placing a container on the balance pan for the first reasing and then putting the object in a container for a second reading. the actualy mass is the difference in the two readings.
A technique for determining the volume of a solid placed into a liquid. You look at how much the liquid rises.
the tendency of a liquid to keep from flowing; resistance to flowing
the motion characteristic of fluids (liquids or gases)
the amount of matter in a given space, or the amount of mass in a given volume
Power or tendency to float on or in a liquid or gas.
the upward force that keeps an object immersed in or floating on a fluid
the speed that a fluid moves in a given time
concerns the flow of air around solid objects or the effect of air on objects around it.
sthe motion of all liquids, usually water, around solid objects.
the theory used to explain matter and heat transfer, which suggests that all matter is made up tiny particles too small to be seen. These particles ar e constantly in motion because they have energy. The more energy they have the faster they move.
the movement of water in straight or almost straight lines
a broken or choppy movement of water usually caused by rapids, eddies or whirlpools.
What are two types of flow?
Laminar and Turbulent flow.
a force that acts to slow a body moving through a liquid.
a smooth curved, narrow shape that allows an object to move easily through a fluid, disturbing the fluid as little as possible.
the physical property of a liquid that limits its ability to flow. it is the resistance a fluid has to flow and movement.
the amount of matter in an object, measured in milligrams(mg), grams (g), or kilograms (kg)
a measure of the force of gravit pulling on an object; measured in newtons
a technique used to measure the volume of small irregular solids, using the formula: volume of object = (volume of water + object) - (volume of water)
the mass of substance per unit volume of that substance; calculated by dividing the mass of a substance by its volume.
What determine how fluids flow?
the shape of the object
What is used to test air flow around or into specific objects?
What kind of flow do you have when moving air encounters building or trees?
What is another name for resistance?
What creates resistance for a fast moving car or plane?
the air it hits
Who built canada's first wind tunnel?
Wallace Rupert Turnbull
It has a propeller at one end that propels air into the tunnel. Smoke is usually added so we can see the flow of air.
How does a wind tunnel work?
Which has a greater viscosity - Ketchup or pancake syrup?
Which has a greater viscosity - water or pancake syrup?
What words can be used to describe viscosity?
Thick or Thin
How does viscosity affect us in real life?
it is important in making chocolat
is an instrument used to measure viscosity.
the viscosity of a gas will _____ when it is heated?
the viscosity of a gas will _____ when it is cooled?
What two factors greatly influence the viscosity of chocolat?
the size of the pieces and the temperature
what ingredient is added to chocolat bars that makes it flow more freely?
more fat is added
What instument is used to measure mass?
curve where the liquid touches the container.
Can mass change?
mass does not change unless you add or remove something. It is constant
is a measure of the amount of space inside something.