Snowshoes work because:

1
1
Snowshoes work because
A increases pressure on snow
B increases area of force
2
2
Which is a unit of pressure?
APound
BPascal
3
3
A substance which easily changes shape is
ASolid
BFluid
4
Fluid pressure equals total force exerted by the
fluid
4
A divided by gravity
B times area
C divided by area
5
5
100 N exerted over an area of 10 m2 is
A 10 pa
B 1000 pa
C 11 feet
6
Can a woman in high heel shoes exert as much
pressure as an elephant?
6
Y or N why or Why Not
7
Air pressure decreases as
7
A velocity increases
B elevation increases
C both A and B
8
8
Water pressure increases as
A depth increases
B acceleration increases
9
9
Water pressure increases with __________________
______
10
10
Why does a small bubble exhaled by a scuba diver
get larger as it nears the surface? _____________
_________________________________
11
11
Air pressure exerted equally on an object from
all directions is
A balanced pressure
B gravitational pressure
12
12
Why arent we crushed by air?
A air is light
B pressure inside us balances the air pressure.
13
13
When we apply a force to a fluid in a closed
container, what is increased throughout the fluid?
A altitude
B pressure
14
14
When you squeeze one end of an inflated balloon,
the other end bulges out. Whose principle is
this?
15
15
This hydraulic lift has force of 50 N exerted on
the 1 cm2 piston. What is the total force on the
20cm2 piston?
16
16
Whose scientific principle explains hydraulic
systems?
A Bernoulli
B Pascal
17
17
Hydraulic systems use two pistons with different
________ __________ to lift heavy objects.
18
18
How much force must be applied to the small
plunger to lift smiley?
400N
20cm2
80cm2
19
19
Does the small piston move a greater or smaller
distance than the large piston?
400N
20cm2
80cm2
20
20
Buoyant force acts in this direction.
or
21
21
What effect does a buoyant force have on a
submerged object?
A net force up
B net force down
22
22
When the block is placed in the beaker, why did
the level of the fluid rise?
23
23
Archimedes said that if an object floats, the
volume of the water pushed out of the way
(displaced) is equal to the volume of the portion
of the object that is ____________
24
24
Who ran around naked when he discovered that
when an object floats, the volume of the water
pushed out of the way (displaced) is equal to
the volume of the portion of the object that is
submerged?
25
25
If you float a 2 N block in water, then weigh the
water that is pushed out of the way of the block,
how much will the water weigh?
26
26
Mass per unit volume (mass divided by
volume) Mass Volume is
A density Bbuoyancy
27
If the density of an object is equal to the
density of the fluid in which it is immersed
A it floats B it sinks C it hangs where ever
you put it
27
28
28
A ship stays afloat as long as the buoyant force
is
A less than the ships weight B greater than
the ships weight C different than the ice berg
29
What causes the chocolate syrup to sink in the
milk?
Chocolate is (more/less) dense than
milk.
29
30
30
Is the pressure of a moving fluid greater or less
than the pressure of the fluid around it?
31
31
State Bernoullis principle.
32
32
According to Bernoullis Principle, the pressure
of a moving fluid is greater or less than the
pressure of the fluid around it?
33
33
If you blow across the top of a tissue, what
happens to the tissue?
34
Which of these is explained by Bernoullis
Principle?
A hydraulic brakes B buoyancy C flight D
momentum
34
35
35
How can a heavy airplane fly?
A huge engines only B curvature of wings
generates lift C drop it off a cliff
36
Whose principle explains how an eagle soars?
36
37
37
Flaps Down increases the overall curvature of
the wing. Does this increase or decrease lift?
38
1 Snowshoes work because
A increases pressure on snow
B increases area of force
39
Which is a unit of pressure?
2
APound
BPascal
40
A substance which easily changes shape is
3
ASolid
BFluid
41
4
Fluid pressure equals total force exerted by the
fluid
A divided by gravity
B times area
C divided by area
42
5
100 N exerted over an area of 10 m2 is
A 10 pa
B 1000 pa
C 11 feet
43
6
Can a woman in high heel shoes exert as much
pressure as an elephant?
Y or N why or Why Not
The heel is a tiny area with lots of force
44
7
Air pressure decreases as
A velocity increases
B elevation increases
C both A and B
45
8
Water pressure increases as
A depth increases
B acceleration increases
46
9
Water pressure increases with __________________
______
DEPTH
47
Why does a small bubble exhaled by a scuba diver
get larger as it nears the surface? _____________
_________________________________
The pressure outside bubble becomes Less so the
bubble pushes out!
10
48
11
Air pressure exerted equally on an object from
all directions is
A balanced pressure
B gravitational pressure
49
12
Why arent we crushed by air?
A air is light
B pressure inside us balances the air pressure.
50
13
When we apply a force to a fluid in a closed
container, what is increased throughout the fluid?
A altitude
B pressure
51
14
When you squeeze one end of an inflated balloon,
the other end bulges out. Whose principle is
this?
Pascal
52
This hydraulic lift has force of 50 N exerted on
the 1 cm2 piston. What is the total force on the
20cm2 piston?
1000 N
15
53
Whose scientific principle explains hydraulic
systems?
A Bernoulli
B Pascal
16
54
Hydraulic systems use two pistons with different
________ __________ to lift heavy objects.
surface
areas
17
55
18
How much force must be applied to the small
plunger to lift smiley?
400N
20cm2
100 N
80cm2
56
Does the small piston move a greater or smaller
distance than the large piston?
400N
20cm2
80cm2
19
57
20
Buoyant force acts in this direction.
or
58
21
What effect does a buoyant force have on a
submerged object?
A net force up
B net force down
59
22
When the block is placed in the beaker, why did
the level of the fluid rise?
Water is displaced
60
23
Archimedes said that if an object floats, the
volume of the water pushed out of the way
(displaced) is equal to the volume of the portion
of the object that is ____________
submerged
61
24
Who ran around naked when he discovered that
when an object floats, the volume of the water
pushed out of the way (displaced) is equal to
the volume of the portion of the object that is
submerged?
Archimedes
62
25
If you float a 2 N block in water, then weigh the
water that is pushed out of the way of the block,
how much will the water weigh?
2 N
63
26
Mass per unit volume (mass divided by
volume) Mass Volume is
A density Bbuoyancy
64
27
If the density of an object is equal to the
density of the fluid in which it is immersed
A it floats B it sinks C it hangs where ever
you put it
65
28
A ship stays afloat as long as the buoyant force
is
A less than the ships weight B greater than
the ships weight C different than the ice berg
66
What causes the chocolate syrup to sink in the
milk?
Chocolate is (more/less) dense than
milk.
29
67
30
Is the pressure of a moving fluid greater or less
than the pressure of the fluid around it?
68
According to Bernoullis Principle, the pressure
of a moving fluid is less than the pressure of
the fluid around it.
State Bernoullis principle.
31
69
32
According to Bernoullis Principle, the pressure
of a moving fluid is greater or less than the
pressure of the fluid around it?
70
33
If you blow across the top of a tissue, what
happens to the tissue?
71
34
Which of these is explained by Bernoullis
Principle?
A hydraulic brakes B buoyancy C flight D
momentum
72
How can a heavy airplane fly?
35
A huge engines only B curvature of wings
generates lift C drop it off a cliff
73
36
Whose principle explains how an eagle soars?
Bernoulli
74
37
Flaps Down increases the overall curvature of
the wing. Does this increase or decrease lift?