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WorksheetsGrade 8 Quiz: Fluids
Total questions: 66
Worksheet time: 1hrs 2mins
The instrument used to measure the volume of liquids is a(n)_____________________.
beaker
eyedropper
graduated cylinder
balance scale
Water and other fluids exert a downward force called a buoyant force.
True
False
All substances have the same density
False
True
Scientists can use the measure of density to tell if something will float.
False
True
What is mass?
The amount of space something takes up.
The amount of matter in a substance.
The ability of a solid to float.
The amount of space between the particles of a substance.
What is volume?
A. The amount of space something takes up.
B. The amount of matter in a substance.
C. Measured in cubic centimetres or millilitres.
D. Both A and C
Which force does streamlining reduce?
weight
air resistance
reaction force
electrostatic
If you go to the Moon, your mass stays the same but your weight will change.
True
False
Liquids take the same ________ and _________ as their container.
shape and size
shape and volume
size and color
size and temperature
This is a measurement of the amount of matter in an object or substance.
volume
density
mass
length
If an object is more effected by gravity's pull than by buoyancy's push it will _______________.
sink.
float.
move sideways.
not move the object.
If an object sinks in a fluid, ________________.
the density of the fluid is greater than the density of the object
the density of the fluid is less than the density of the object
the density of the fluid is equal to the density of the object
density has nothing to do with whether an object sinks or floats, only which state of matter the object is
Which is a quality that only gasses display
Spread out to fill all available space
Take the shape of their container
Can't be compressed
They stink
As the story goes, a king wanted to determine if his crown was made of pure gold. A man measured the amount of volume the crown displaced and found its density to solve the problem. His name was?
Pascal
Newton
Bernoulli
Archimedes
As the story goes, a king wanted to determine if his crown was made of pure gold. A man measured the amount of volume the crown displaced and found its density to solve the problem. Where was he when he solved the problem?
the lab
in the bathtub
under a tree
in a boat
Archimedes's Principle relates the buoyant force to _____________________.
The weight of fluid displaced
The volume of the object
The mass of the object
The density of the object
The density of an object is calculated by which equation
D=m*V
D=m/V
D=V/m
D=m-V
Which of the following is NOT an example of laminar flow?
a river moving slowly in a straight line
smoke rising upward in a smooth column through air
water flowing evenly from a slight opened faucet
smoke twisting as it moves upward from a fire
How does a liquid differ from a gas?
a liquid has both definite shape and definite volume, whereas a gas has neither
a liquid has a definite volume, unlike a gas
a liquid has a definite volume unlike a gas
a liquid has a definite shape whereas a gas has a definite volume
Which of the following statements about floating objects is correct?
the objects density is greater than the density of the fluid on which it floats
the objects density is equal to the density of the fluid on which it floats
The displaced volume of fluid is greater than the volume of the object
They buoyant force equals the objects weight
If an object is only partially submerged in a fluid, which of the following is true.
The volume of the displaced fluid equals the volume of the object
the density of the fluid equals the density of the object
the density of the fluid is greater than the density of the object
the density of the fluid is less than the density of the object
Which of the following is NOT an example of turbulent flow?
a river flowing slowly in a straight line
a river flowing swiftly around rocks in rapids
water flowing unevenly from a fully opened faucet
smoke twisting as it moves upward from a fire.
Which of the following is NOT a fluid?
carbon dioxide
hydrogen
seawater
wood
If Aerodynamics is the study of mechanics and air, Hydrodynamics is...
The study of solids and fluids
The study of energy
The study of mechanics and fluids
The study of speed
A material that is able to float in water is said to be
Buoyant
Lightweight
Displaced
Energy
Aerodynamic is ____________________.
having power from wind or air
having power from water
having or using full strength
a powerful explosive substance
Hydrodynamic is ____________________.
having power from water
having power from wind or air
having a strong personality
having or using full strength
The particle theory states that matter is made up of what?
crystals
cells
particles
marbles
Which has a greater distance between particles?
plasma
liquid
gas
solid
Systems involving moving fluids are said to be ____________________.
mechanical
physical
fantastic
dynamic
Particle theory states that _________________.
there are forces of attraction between particles, all matter is composed of particles, and particles are in constant motion
there are opposite forces between particles, all matter is composed of particles, and particles are in constant motion
there are forces of attraction between particles, all matter is composed of particles, and particles are stationary
None of the above are correct
Flow rate refers to ____________________.
how much volume is occupied by a fluid
the density of a fluid
how quickly a fluid flows in a give amount of time
the amount of fluid in a volume
The term for the resistance that a fluid has to flowing and movement is ___________________.
streamline
turbulent flow
flow rate
viscosity
Displacement measures ___________________.
the density of small irregular objects
the volume of small irregular solids
the mass of small irregular solids
the buoyancy of small irregular objects
It is impossible to measure the volume of large irregular solids. This statement is:
true
false
impossible to calculate
sometimes true, sometimes false
Density is _______________________.
the amount of space an object occupies
how much an object weighs
mass of a substance per unit volume of that substance
the gravitational pull on an object
Marcus has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock?
7 mL
7 g/cm3
28 g/cm3
1/7 g/cm3
Which is a unit of measurement are used for volume?
grams
centimetres
grams/millilitre
millilitre
An object is placed in under water and it rises to the surface. The objects has a ________________________.
positive buoyancy
negative buoyancy
neutral buoyancy
density that is more than water
An object is placed in under water and it sinks to the bottom. The objects has a ________________________.
positive buoyancy
negative buoyancy
neutral buoyancy
density that is less than water
An object is placed in under water and it neither sinks or floats and remains level in the water. The objects has a ________________________.
positive buoyancy
negative buoyancy
neutral buoyancy
density that is more than water
A measurement of the force of gravity pulling on an object is known as _____________________.
its density
its mass
its weight
its volume
In physics, pressure is defined as the _____ over a given area.
Work
Force
Mass
Energy
What is the standard unit of measure for pressure?
Joule
Newton
Ampere
Pascal
Where would you find the largest pressure?
At the bottom of the ocean
At the top of Mt Everest
Close to ground on the Scotch oval
In a rockpool on the Great Barrier Reef
True or false:
Pressure depends on depth
true
false
In what direction(s) does air exert pressure?
everywhere
no where
there is no pressure
downward
As you climb up a mountain what happens to the air pressure?
decreases
increases
stays the same
Air pressure is greatest when near Earth's surface because?
The air molecules are farther apart.
The air molecules are closer together.
Air molecules collide.
Air molecules are tightly packed.
When a diver dives deeper into the ocean, he will experience ...................... liquid pressure
greater
less
no
What holds a card on an inverted cup of water held in the air?
A seal forms between the card and the jar.
A vacuum forms, sucking the card in and holding it to the jar.
The air below the card exerts the pressure upwards
The gravity of the water is pulling on the card.
What is pressure?
Somebody convincing you to jump into a pool.
How deep a well is.
Amount of force applied to a given area.
Amount of water in a cup of water.
Pascal's Law states states that a pressure change at any point in a confined incompressible fluid is transmitted throughout the fluid such that the same change occurs everywhere.
True
False
Neither true nor false
To find the pressure on an object you need to calculate:
pressure = F/A
pressure = A/F
pressure = F x A
pressure = A x F
If a hydraulic system has 1000 N applied to the input piston and has an area of 81 cm2, what is the pressure?
12.35 Pa
12,346 Pa
1235 Pa
123,457 Pa
The picture illustrates an example of a __________________.
pneumatic system
hydraulic system
natural system
heavy system
A ship in Lake Ontario (fresh water) will ___________________ in the the water than in the Atlantic Ocean (salt water).
float higher
float lower
float at the same height
A 1cm cube can hold ____________________ of liquid.
1ml
1L
1lb
1m2
