Chapter 7 Test - Craig Fisher | Library

MULTIPLE CHOICE
-Choose the correct answer by clicking on your answer choice. Only one answer is correct. (2 pts. each)

2

How does atmospheric pressure change as you go from the top of a mountain to sea level?

2

How do soap bubbles become round?

2

What does NOT affect an airplanes lift?

2

Of the following, where would atmospheric pressure be the greatest?

2

When a fluid flows from area A to area B, area A is an area of greater

2

Why do air bubbles in water rise to the surface?

2

Because fluid pressure is exerted evenly in all directions,

2

Which of the following does NOT affect the amount of lift on an airplane's wing?

2

Which of the following would NOT affect the level at which a ship cruises at sea?

2

Which statement is NOT true about fluids?

2

When air is pumped into a tire

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The nitrogen, oxygen and other gases surrounding the Earth

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Water pressure

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Air rushes into your lungs when you inhale because

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Fluid pressure is always directed

2

An object surrounded by a fluid will displace a volume of fluid that is

2

If an object weighing 50 N displaces a volume of water that weighs 30 N, what is the buoyant force on the object?

2

Find the pressure exerted by a 3000 N crate that has an area of 2 m2

2

What is affected by an airplanes speed?

2

Why would a pilot adjust a plane's wing flaps?

2

Why would a 1cm3 piece of balsa wood be more buoyant than a 1cm3 piece of oak?

2

What happens in the lungs when you exhale?

2

What causes air to enter into a tornado?

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Which of the following changes increases the overall density of the object?

2

A helium filled balloon will float because

COMPLETION
-Complete the following questions by selecting the correct answer from the word bank. Misspelled words will be marked as incorrect. Some answers may be used more than once, others may not be used at all. (2 pts. each) 

more thrust,                    less thrust,                           more gravity,                           less gravity,         Archimedes' Principle,                  lift,                     buoyant force,              Bernoulli's Principle,            Pascal's Principle,             drag,         thrust,          up,        down,                 sideways,                into,                Venturi effect,                     hydraulic,                       compressed air, 
           swim bladder

2

A paper airplane thrown hard has ____________________ than one thrown lightly.

more thrust,                    less thrust,                           more gravity,                           less gravity,         Archimedes' Principle,                             lift,                     buoyant force,              Bernoulli's Principle,            Pascal's Principle,             drag,         thrust,      up,       down,                 sideways,                into,                Venturi effect,                     hydraulic,                       compressed air,             swim bladder

2

A single engine plane has __________________ than a jumbo jet.

more thrust,                    less thrust,                           more gravity,                           less gravity,         Archimedes' Principle,                        lift,                     buoyant force,              Bernoulli's Principle,            Pascal's Principle,             drag,         thrust,      up,       down,                 sideways,                into,                Venturi effect,                     hydraulic,                       compressed air,             swim bladder

2

A jumbo jet has ________________ acting on it than a single engine plane.

more thrust,                    less thrust,                           more gravity,                           less gravity,         Archimedes' Principle,                        lift,                     buoyant force,              Bernoulli's Principle,            Pascal's Principle,             drag,         thrust,      up,       down,                 sideways,                into,                Venturi effect,                     hydraulic,                       compressed air,             swim bladder

2

The fact that a heavy steel cargo ship can carry a large load without sinking illustrates __________________________.

more thrust,                    less thrust,                           more gravity,                           less gravity,         Archimedes' Principle,                     lift,                     buoyant force,              Bernoulli's Principle,            Pascal's Principle,             drag,         thrust,      up,       down,                 sideways,                into,                Venturi effect,                     hydraulic,                       compressed air,             swim bladder

2

The forward force produced by an airplanes engine is called ________________.

more thrust,                    less thrust,                           more gravity,                           less gravity,         Archimedes' Principle,                     lift,                     buoyant force,              Bernoulli's Principle,            Pascal's Principle,             drag,         thrust,      up,       down,                 sideways,                into,                Venturi effect,                     hydraulic,                       compressed air,             swim bladder

2

A liquid exerts a(n) ___________________ on an object that increases as the density of the fluid increases.

more thrust,                    less thrust,                           more gravity,                           less gravity,         Archimedes' Principle,           lift,                     buoyant force,              Bernoulli's Principle,            Pascal's Principle,             drag,         thrust,      up,       down,                 sideways,                into,                Venturi effect,                     hydraulic,                       compressed air,             swim bladder

2

The forward force of a plane is opposed by _______________, which works against it.

more thrust,                    less thrust,                           more gravity,                           less gravity,         Archimedes' Principle,             lift,                     buoyant force,              Bernoulli's Principle,            Pascal's Principle,             drag,         thrust,      up,       down,                 sideways,                into,                Venturi effect,                     hydraulic,                       compressed air,             swim bladder

2

The forward force from an airplanes engine is called _____________.

more thrust,                    less thrust,                           more gravity,                           less gravity,         Archimedes' Principle,             lift,                     buoyant force,              Bernoulli's Principle,            Pascal's Principle,             drag,         thrust,      up,       down,                 sideways,                into,                Venturi effect,                     hydraulic,                       compressed air,             swim bladder

2

Hydraulic devices lift objects using __________________________.

more thrust,                    less thrust,                           more gravity,                           less gravity,         Archimedes' Principle,            lift,                     buoyant force,              Bernoulli's Principle,            Pascal's Principle,             drag,         thrust,      up,       down,                 sideways,                into,                Venturi effect,                     hydraulic,                       compressed air,             swim bladder

2

The density of a fluid affects the ____________________ it exerts.

MATCHING
-Complete the following matching questions by clicking on the correct answer. Only one answer is correct. (2 pts. each)  

2

In a strong wind, drag is the _______________ that you walk against.

2

A hydraulic brake system in a car acts as a force multiplier because the pistons that push the brake pads are ____________ than the piston that is pushed by the brake pedal.

2

Pressure is an amount of force exerted on a given _____________.

2

Pushes an ice cube to the top of a glass of water

2

explains why the buoyant force on a rock that displaces 5 N of water is 5 N

2

has a weight of 10 N and a buoyant force of 10 N

2

has a weight of 15 N and a buoyant force of 18 N

2

can be decreased by making the shape hollow

2

has a density of 2.5 g/cm3 in water

2

is pumped into a submarine's ballast tank to decrease density

 SHORT ANSWER
-Write in complete sentences to answer the following questions. One or two word responses will earn NO credit. Logically connect your thoughts and answer the question that is asked, not the question you think has been asked! (2 pts. each) 

2

What happens if pressure is higher inside a tube of toothpaste than outside the tube?

2

In a closed soda bottle, the force on the cap due to the carbonation of the soda is 16 N. If the area of the bottle cap is 8 cm2, what is the pressure on the cap?

2

How can you determine the buoyant force acting on an object?

2

Pilots have to adjust a plane's wing flaps throughout a flight. Explain the purpose of these adjustments.

2

Why does water pressure increase as the depth of the water increases?

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