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WorksheetsGrade 9 Pressure
Total questions: 20
Worksheet time: 11mins
Which one is correct to describe pressure?
force per unit area
area per unit force
product of area and force
work done per unit time
Which is NOT the unit of pressure?
mmHg
Nm2
pascal
m2N
Which statemen is correct about pressure, force and area?
Pressure is inversely proportional to area
Pressure is directly proportional to area
Pressure is inversely proportional to force
Why is it hard to cut using a dull knife?
A dull knife has larger contact area than the sharp one, so its pressure is greater.
A dull knife has smaller contact area than the sharp one, so its pressure is greater.
A sharp knife has larger contact area than the sharp one, so its pressure is greater.
A dull knife has larger contact area than the sharp one, so its pressure is smaller.
A force of 500 N is given to 0.02 m2. What is the pressure?
25 Pa
25 kPa
10 Pa
0.04 kPa
A box has a mass of 5 kg. What is the contact are between the box and the floor to produce pressure of 20 Pa?
2.5 m2
2.5 m3
0.25 m2
100 m2
Which hole will produce strongest flow of water? Why?
Hole 1, since the deeper the liquid the greater the pressure
Hole 3, since the deeper the liquid the greater the pressure
Hole 1, since the shallower the liquid the greater the pressure
Hole 3, since the deeper the liquid the smaller the pressure
Which quantity doesn't affect the pressure of liquid?
density of object
density of liquid
gravitational field strength
depth of liquid
Which length is used to measure the pressure of liquid get by the fish?
A
B
C
D
Liquid X has smaller density than liquid Y. Which tube has the smallest pressure by the liquid?
A
B
C
D
What is pressure of sea water get by the diver in point A?
102 kPa
10.2 kPa
102 Pa
10200 Pa
Why does a dam have thinner wall at the top than at the bottom?
it is to counteract the greater force at the bottom since the deeper the liquid, the greater the pressure
it is to counteract the greater force at the bottom since the deeper the liquid, the smaller the pressure
it is to counteract the smaller force at the bottom since the deeper the liquid, the greater the pressure
it is to counteract the smaller force at the bottom since the deeper the liquid, the smaller the pressure
Which one is not correct about atmospheric pressure?
atmospheric pressure is equal to the weight of atmosphere
atmospheric pressure is weight of atmosphere in a certain area
atmospheric pressure on the Earth surface is 1.01 x 102 Pa
atmospheric pressure on the Earth surface is 76 cmHg
p1 is pressure of gas 1 and p2 is pressure of gas 2. If p1 > p2 , what will happen and why?
gas 1 will move to the right since it has greater push than gas 2
gas 1 will move to the right since it has smaller push than gas 2
gas 2 will move to the left since it has greater push than gas 1
gas 2 will move to the left since it has smaller push than gas 1
What is this?
Manometer
Barometer
micrometer
higrometer
Which tools has function to measure atmospheric pressure?
manometer
barometer
micrometer
hygrometer
A students to compare which of two gases has more pressure?
manometer
barometer
micrometer
hygrometer
Which length is used to measure the atmospheric pressure?
P
Q
R
S
p1 is pressure of gas 1 and p2 is pressure of gas 2. From this picture, what can we say about the pressure of both gas?
they have the same pressure
gas 1 has more pressure than gas 2
gas 1 has less pressure than gas 2
gas 2 has more pressure than gas 1
Which one will increase the h?
increase p2
change mercury with smaller density liquid
change mercury with greater density liquid
decrease p1
