Question 1

Gas pressure inside an inflated stretched balloon is actually

Accepted Answer

A) less than air pressure outside the balloon. 
B) equal to air pressure outside the balloon. 
C) greater than air pressure outside the balloon. 
D) impossible to determine without knowing the type of gas. 
A) less than air pressure outside the balloon. 
B) equal to air pressure outside the balloon. 
C) greater than air pressure outside the balloon. 
D) impossible to determine without knowing the type of gas. C

Question 2

If you release a ball inside a freely falling elevator,it stays in front of you instead of "falling to the floor" because you,the ball,the elevator,and the air in the elevator are all in free fall.If you similarly release a helium-filled balloon,the balloon will

Accepted Answer

A) also stay in front of you. 
B) press against the ceiling. 
C) press against the floor. 
D) slowly rise. 
E) slowly fall. 
A) also stay in front of you. 
B) press against the ceiling. 
C) press against the floor. 
D) slowly rise. 
E) slowly fall. A

Question 3

Assuming no change in temperature,as a freely expanding helium-filled balloon rises in the atmosphere,the buoyant force that acts on it

Accepted Answer

A) increases. 
B) decreases. 
C) remains nearly the same for a long way. 
A) increases. 
B) decreases. 
C) remains nearly the same for a long way. C

Question 4

As a helium-filled balloon rises in the air,it becomes

Accepted Answer

A) bigger. 
B) more dense. 
C) heavier. 
D) all of these 
E) none of these 
A) bigger. 
B) more dense. 
C) heavier. 
D) all of these 
E) none of these

Question 5

The Bernoulli effect causes passing ships to be drawn together when the ships are close and moving in

Accepted Answer

A) the same direction. 
B) opposite directions. 
C) either the same or opposite directions. 
A) the same direction. 
B) opposite directions. 
C) either the same or opposite directions.

Question 6

What is the approximate mass of a 1-square-centimeter column of air that extends from sea level to the top of the atmosphere?

Accepted Answer

A) 1 gram 
B) 1 kilogram 
C) 10 kilograms 
D) 100 kilograms 
A) 1 gram 
B) 1 kilogram 
C) 10 kilograms 
D) 100 kilograms

Question 7

In a vacuum a marshmallow becomes

Accepted Answer

A) larger. 
B) smaller. 
C) flat. 
D) a hollow shell. 
E) none of the above choices 
A) larger. 
B) smaller. 
C) flat. 
D) a hollow shell. 
E) none of the above choices

Question 8

When water is turned on in a shower,the shower curtain moves towards the water.This has to do with

Accepted Answer

A) capillary action. 
B) surface tension. 
C) heat capacity. 
D) pressure of a moving fluid. 
E) none of these 
A) capillary action. 
B) surface tension. 
C) heat capacity. 
D) pressure of a moving fluid. 
E) none of these

Question 9

As a woman holding her breath swims deeper and deeper beneath the water's surface,her density

Accepted Answer

A) increases. 
B) decreases. 
C) remains the same. 
A) increases. 
B) decreases. 
C) remains the same.

Question 10

A column that extends from sea level to the top of the atmosphere contains a certain mass of air.If the same column instead had the same mass of mercury in it,the height of the mercury column would be

Accepted Answer

A) 1/13.6 times the height of the atmosphere. 
B) about 3/4 meter. 
C) 10.3 meters. 
D) about 5.6 kilometers. 
A) 1/13.6 times the height of the atmosphere. 
B) about 3/4 meter. 
C) 10.3 meters. 
D) about 5.6 kilometers.

Question 11

When a common fluorescent lamp is on,the mercury vapor inside is actually in a

Accepted Answer

A) gaseous state. 
B) liquid state. 
C) plasma state. 
D) solid state. 
E) none of these 
A) gaseous state. 
B) liquid state. 
C) plasma state. 
D) solid state. 
E) none of these

Question 12

Use the following figure to answer the question:  
-The depth to which an inverted drinking glass must be pushed beneath the surface of water so that the volume of enclosed air is squeezed to half is

Accepted Answer

A) 76 cm. 
B) 10.3 m. 
C) 14.7 m. 
D) 20.6 m. 
E) 29.4 m. 
A) 76 cm. 
B) 10.3 m. 
C) 14.7 m. 
D) 20.6 m. 
E) 29.4 m.

Question 13

Airplane flight best illustrates

Accepted Answer

A) Archimedes' principle. 
B) Pascal's principle. 
C) Bernoulli's principle. 
D) Boyle's law. 
A) Archimedes' principle. 
B) Pascal's principle. 
C) Bernoulli's principle. 
D) Boyle's law.

Question 14

A helium-filled balloon released in the atmosphere will rise until

Accepted Answer

A) the pressure inside the balloon equals atmospheric pressure. 
B) atmospheric pressure on the bottom of the balloon equals atmospheric pressure on the top of the balloon. 
C) the balloon and surrounding air have equal densities. 
D) all of these 
E) none of these 
A) the pressure inside the balloon equals atmospheric pressure. 
B) atmospheric pressure on the bottom of the balloon equals atmospheric pressure on the top of the balloon. 
C) the balloon and surrounding air have equal densities. 
D) all of these 
E) none of these

Question 15

When gas in a container is squeezed to half its volume,its density

Accepted Answer

A) halves. 
B) doubles. 
C) quadruples. 
D) remains the same. 
A) halves. 
B) doubles. 
C) quadruples. 
D) remains the same.

Question 16

Consider two mercury barometers,one with twice the cross-sectional area of the other.Neglecting capillarity,mercury in the smaller tube will rise

Accepted Answer

A) the same height as in the larger tube. 
B) twice as high as mercury in the larger tube. 
C) four times as high as mercury in the larger tube. 
D) more than four times as high as in the larger tube. 
E) none of these 
A) the same height as in the larger tube. 
B) twice as high as mercury in the larger tube. 
C) four times as high as mercury in the larger tube. 
D) more than four times as high as in the larger tube. 
E) none of these

Question 17

Compared to all liquids,solids,and gases in the universe,plasmas are the most

Accepted Answer

A) abundant. 
B) rare. 
C) We don't have enough information at this time. 
A) abundant. 
B) rare. 
C) We don't have enough information at this time.

Question 18

Most of the matter in the universe is in the

Accepted Answer

A) solid state. 
B) liquid state. 
C) gaseous state. 
D) plasma state. 
E) none of these 
A) solid state. 
B) liquid state. 
C) gaseous state. 
D) plasma state. 
E) none of these

Question 19

The energy source responsible for the motion of molecules that make up the atmosphere is

Accepted Answer

A) their own natural kinetic energy. 
B) the pressure caused by the weight of air. 
C) atmospheric tides. 
D) solar power. 
A) their own natural kinetic energy. 
B) the pressure caused by the weight of air. 
C) atmospheric tides. 
D) solar power.

Question 20

The air in this room has

Accepted Answer

A) mass. 
B) weight. 
C) energy. 
D) all of these 
E) none of these 
A) mass. 
B) weight. 
C) energy. 
D) all of these 
E) none of these

Exam 14: Gases and Plasmas

Gas pressure inside an inflated stretched balloon is actually

If you release a ball inside a freely falling elevator,it stays in front of you instead of "falling to the floor" because you,the ball,the elevator,and the air in the elevator are all in free fall.If you similarly release a helium-filled balloon,the balloon will

Assuming no change in temperature,as a freely expanding helium-filled balloon rises in the atmosphere,the buoyant force that acts on it

As a helium-filled balloon rises in the air,it becomes

The Bernoulli effect causes passing ships to be drawn together when the ships are close and moving in

What is the approximate mass of a 1-square-centimeter column of air that extends from sea level to the top of the atmosphere?

In a vacuum a marshmallow becomes

When water is turned on in a shower,the shower curtain moves towards the water.This has to do with

As a woman holding her breath swims deeper and deeper beneath the water's surface,her density

A column that extends from sea level to the top of the atmosphere contains a certain mass of air.If the same column instead had the same mass of mercury in it,the height of the mercury column would be

When a common fluorescent lamp is on,the mercury vapor inside is actually in a

Use the following figure to answer the question: -The depth to which an inverted drinking glass must be pushed beneath the surface of water so that the volume of enclosed air is squeezed to half is

Airplane flight best illustrates

A helium-filled balloon released in the atmosphere will rise until

When gas in a container is squeezed to half its volume,its density

Consider two mercury barometers,one with twice the cross-sectional area of the other.Neglecting capillarity,mercury in the smaller tube will rise

Compared to all liquids,solids,and gases in the universe,plasmas are the most

Most of the matter in the universe is in the

The energy source responsible for the motion of molecules that make up the atmosphere is

The air in this room has

About Science

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