Force per unit area

Density

Buoyancy

Pressure

Power

13%

0%

81%

6%

1. Density2. Buoyancy3. Pressure4. Power

Mass per unit volume

Density

Buoyancy

Pressure

Power

95%

0%0%5%

1. Density2. Buoyancy3. Pressure4. Power

Upward force experienced by an object immersed in a fluid.

Density

Buoyancy

Pressure

Power

5% 0%0%

95%1. Density2. Buoyancy3. Pressure4. Power

The buoyant force experienced by an object equals the weight of the fluid it displaces.

Archim

edes’ pr...

Pascal’s

princ..

.

Bernoulli’s L

a...

The ideal g

as ...

100%

0%0%0%

1. Archimedes’ principle2. Pascal’s principle3. Bernoulli’s Law4. The ideal gas law

Changes in pressure are transmitted throughout a fluid.

Archim

edes’ pr...

Pascal’s

princ..

.

Bernoulli’s L

a...

The ideal g

as ...

0%

15%5%

80%1. Archimedes’ principle2. Pascal’s principle3. Bernoulli’s Law4. The ideal gas law

A Pascal is equal to one

Gram/cu

bic cen...

Joule/se

cond

Newton/square ...

Joule/k

ilogram...

5%10%

80%

5%

1. Gram/cubic centimeter

2. Joule/second3. Newton/square

meter4. Joule/kilogram/

Kelvin

The ______ is equal on each cylinder of a hydraulic lift.

Pressure

Force Area

Displac

ement

81%

14%

0%5%

1. Pressure2. Force3. Area4. Displacement

Density equals:

m/V F/

A rV

g

aLoDT

100%

0%0%0%

1. m/V2. F/A3. rVg4. aLoDT

The buoyant force equals the ____ of the displaced fluid

Density

Mass

Volume

Weight

0%

90%

5%5%

1. Density2. Mass3. Volume4. Weight

The average kinetic energy of a particle in random thermal motion describes

Heat

Thermal E

nergy

Mech

anical E

ne...

Temperature

5%

57%

14%

24%

1. Heat2. Thermal Energy3. Mechanical Energy4. Temperature

1.0 L of gas is initially at a temperature of -73oC and a pressure of 80 kPa. If the temperature is raised to 23oC with no change of volume the new pressure will be:

27 kPa

120 kPa

160 kPa

180 kPa

17%11%

28%

44%

1. 27 kPa2. 120 kPa3. 160 kPa4. 180 kPa

If a 24 kg object rests on a surface with an area of 0.08 m2 it exerts a pressure of:

300 Pa

3.0 kPa

0.0033 Pa 55 psi

19%

0%5%

76%1. 300 Pa2. 3.0 kPa3. 0.0033 Pa4. 55 psi

Which formula could be used to solve a problem about hydraulic lifts?

P1V1/T1 = P2V2...

DL=aLDT

P=Po + rhg

F1/A

1=F2/A

2

9%

61%

22%

9%

1. P1V1/T1 = P2V2/T2

2. DL=aLDT3. P=Po + rhg4. F1/A1=F2/A2

Which formula could be used to determine the pressure exerted by a fluid at a certain depth?

FB=rV

g

r=m/V

P=Po+rhg

P=W/t

5% 0%

95%

0%

1. FB=rVg2. r=m/V3. P=Po+rhg4. P=W/t

When heat is added to a substance at its melting point its temperature increases.

True Fa

lse

57%

43%

1. True2. False

The increase in thermal energy needed to raise one unit of mass by one unit of temperature is called:

Heat of v

aporization

Specifi

c Heat

Coefficient o

f linear t

he...

Radiant Heat

16%5%5%

74%1. Heat of vaporization2. Specific Heat3. Coefficient of linear

thermal expansion4. Radiant Heat

The first law of thermodynamics states that:

The inte

rnal

energ

y of..

The bouya

nt force

e...

The entro

py of th

e un...

91%

9%0%

1. The internal energy of a system can be increased by doing work or adding heat.

2. The bouyant force equals the weight of fluid displaced.

3. The entropy of the universe is always increasing.

The relationship between heat energy and temperature change is given by the formula:

Q=m

cDT

DL=aLoD

T

PV=nRT

P=W/t

96%

0%0%4%

1. Q=mcDT2. DL=aLoDT3. PV=nRT4. P=W/t

When a chocolate bar is cut in half its density is…

Halved

Unchan

ged

Doubled

26%

4%

70%1. Halved2. Unchanged3. Doubled

One kilogram of styrofoam has _____ density than one kilogram of iron

A small

er

A greater

The sam

e

83%

9%9%

1. A smaller2. A greater3. The same

If a loaf of bread is compressed, its _____

Mas

s dec

rease

s

Volume incre

ases

Densit

y incre

ases

None of th

ese

0%

50%

36%

14%

1. Mass decreases2. Volume increases3. Density increases4. None of these

A wooden block has a mass of 800 g and a volume of 2 cm3. What is the block’s density?

800 g

/cm3

400 g

/cm3

1600

g/cm3

0.4 g

/cm3

0.02

5 cm3/g

4%

83%

0%4%9%

1. 800 g/cm3

2. 400 g/cm3

3. 1600 g/cm3

4. 0.4 g/cm3

5. 0.025 cm3/g

Water pressure is greatest against the _____

Top of a su

bme..

.

Bottom of a

su...

Sides o

f a su

b...

None of th

ese

23%14%

5%

59%1. Top of a submerged object

2. Bottom of a submerged object

3. Sides of a submerged object

4. None of these

A completely submerged object always displaces an amount of fluid equal to its own:

Volume

Weig

ht

Densit

y M

ass

57%

0%0%

43%

1. Volume2. Weight3. Density4. Mass

One liter of water has a mass of:

1 kg 1

N

Both of thes

e

Neithe

r of th

ese

64%

32%

5%0%

1. 1 kg2. 1 N3. Both of these4. Neither of these

What is the buoyant force acting on a 34,000 N ship that is floating in the ocean?

Less t

han 34

,000 N

34,00

0 N

More

than 34

,000 N

Depen

ds on th

e den

si..

0% 0%10%

90%1. Less than 34,000 N2. 34,000 N3. More than 34,000

N4. Depends on the

density of the sea water

What is the weight of water which is displaced by a floating 34,000 N ship?

Less t

han 34

,000 N

34,00

0 N

More

than 34

,000 N

Depen

ds on th

e ship

..

Depen

ds on th

e den

s...

0%

58%

26%

5%11%

1. Less than 34,000 N2. 34,000 N3. More than 34,000 N4. Depends on the ship’s

shape5. Depends on the

density of the seawater

An object that is partly or entirely immersed in a liquid is buoyed up by a force that is:

Equal to

its own w

eight

Equal to

the weig

ht of...

Equal to

the den

sity o

...

Equal to

the volume o

...

10% 14%5%

71%1. Equal to its own

weight2. Equal to the weight of

the fluid it displaces.3. Equal to the density of

the fluid it is in.4. Equal to the volume of

the fluid it is in.

A rock suspended by a weighing scale weighs 5.0 N out of water and 3.0 N when submerged in water. What is the buoyant force acting

on the rock?

5.0 N

3.0 N

2.0 N

8.0 N

None of th

ese

5%

23%

0%5%

68%

1. 5.0 N2. 3.0 N3. 2.0 N4. 8.0 N5. None of these

Compared to an empty ship, the same ship loaded with styrofoam will float:

Higher in th

e wate

r

Lower in

the w

ater

At the s

ame l

evel

in t..

33%

14%

52%1. Higher in the water2. Lower in the water3. At the same level in

the water.

A block of styrofoam floats on a lake while a block of lead with equal volume lies submerged at the bottom of the lake. The buoyant force is

greatest on the:

Styrofo

am Lea

d

Is th

e sam

e for b

oth

17%

74%

9%

1. Styrofoam2. Lead3. Is the same for both

A suction cup sticks to a wall. It is ____.

Pulled t

o the w

all by .

..

Pushed

to th

e wall

by...

Both of thes

e

Neithe

r of th

ese

50%

14%18%18%

1. Pulled to the wall by the vacuum

2. Pushed to the wall by the atmosphere

3. Both of these4. Neither of these