WorksheetsReview PAS 8th Grade
Total questions: 45
Worksheet time: 1hrs 11mins
In this graph, a bus is:
moving
standing still (stationary)
speeding up (accelerating)
slowing down (decelerating)
It is TRUE that (more answers possible):
the graph shows a steep slope line.
the speed is steady in the graph.
a bus is moving forward.
a bus is returning back.
In this graph,
the bus is gradually speeding up (accelerating).
the line is curved.
the bus is gradually slowing down (decelerating).
none of the above.
Match the graph to the description:
"The car is stopped."
Match the graph to the description:
"The car is slowing down (negative acceleration)."
Segment B-C: The bus is _________________. It is slowing down from 10 m/s rest in 3 seconds.
accelerating
decelerating
constant speed
at rest
Segment D - F: The distance travelled by bus is ..... m
12.5 m
25 m
37.5 m
50 m
Jasmine runs exactly 3 laps around a 400 meter track. What is the DISTANCE?
800 m
400 m
0 m
1200 m
Jasmine runs exactly 3 laps around a 400 meter track. What is the DISPLACEMENT?
800 m
400 m
0 m
1200 m
Jerry walked from home to school, then from the school to the park. What is his total distance?
2 km
5 km
8 km
10 km
Jerry walked from home to school, then from the school to the park. What is his total displacement?
2 km
5 km
8 km
10 km
Look at the picture. Is it balanced force or unbalanced force?
balanced force
unbalanced force
Thick the correct statements about the picture
The cart goes forward
The cart goes backward
The resultant force is 30 N
The resultant force is 90N
The cyclist accelerates at 1.4 m/s2.
The mass of the cyclist and bicycle is 60 kg.
Calculate the resultant force.
(a)
Monica is riding her favorite roller coaster at the amusement park. During a drop, Monica is pushed back into her seat with great force. Which of Newton's Laws of Motion BEST describes why this is happening?
Newton's First Law
Newton's Second Law
Newton's Third Law
None of Newton's Laws describe this scenario
A rocket is launching on a mission to the International Space Station. Upon takeoff, a large jet of fire comes from the bottom of the spacecraft towards the ground. The rocket then begins to move towards the sky.
1st Law of Inertia
2nd Law of Acceleration
3rd Law of Action-Reaction
A large semi-truck carrying a heavy load and a small sports car both stop at a red light. The sports car requires less force to stop at the light than the large truck.
1st Law of Inertia
2nd Law of Acceleration
3rd Law of Action-Reaction
Which formula is used to calculate pressure?
pressure = areaforce
pressure = force x area
pressure = forcearea
When you increase your depth under water, the water pressure on your body
increases
decreases
stays the same
The figure shows a pond with two fish P and Q.
What is the correct relation of the water pressures on fish P and fish Q?
Water pressure on fish Q > Water pressure on fish P.
Water pressure on fish Q < Water pressure on fish P.
Water pressure on fish Q = Water pressure on fish P.
The diagram shows a cross-section of a pool. The density of water in the pool is 1000 kg m-3.
What is the pressure exerted by the water at X?
2.5 x 102 Pa
2.5 x 10-3 Pa
4.0 x 103 Pa
4.0 x 104 Pa
Diagram shows a submarine in a sea.
What is the depth, h, of the submarine when the total pressure is 2.06 x 107 Pa?
[Density of water = 1.03 x 103 kgm-3]
2.00 x 103 m
2.00 x 104 m
2.12 x 109 m
2.12 x 1011 m
Tea pot is one example of application of ....... principle
Pascal's Law
Archimede's Law
Communicating Vessels
Hydrostatic Pressure
In a car lift, compressed air exerts a force, F1 on a small piston having a radius of 5 cm. This pressure is transmitted to a second piston of radius 20 cm as shown in figure above. The mass of the car is 1200 kg.
Calculate the pressure on the smaller piston F1.
625 N
700 N
750 N
1200 N
An object has weight of 50 N, but when it immerse in the water, its weight is 30 N. Calculate the buoyancy force that the object experienced....
50 N
30 N
20 N
10 N
The image below is an application of Archimedes' law, except ...
A copper ball with a volume of 500 cm³ in air weighs 10 N, in a liquid it weighs 6 N. If g = 10 m/s² then the density of the liquid is ................ kg/m³
500
800
1000
1250
An object with a volume of 0.5 m3 is completely immersed in a liquid which density is 1500 kg/m3. If g = 10 m/s2 then the object will experience an buoyancy force of...
7500 N
4500 N
3000 N
1500 N
Bamboo rafts will be used to ferry people across a river as shown in the picture. The thickness of the raft is 10 cm while the total surface area of the raft is 5 m2. The density of bamboo is 400 kg/m3, and assuming the mass of each person is the same, namely 50 kg, then what is the maximum number of people that can be transported per crossing?
5
6
7
8
The pressure inside the syringe will decrease if we move the plunger in:
Direction A
Direction B
We don't have to move the plunger as the pressure will change on its own.
None of the above answers.
When the paper strip goes out, the air inside the bottle cools. This causes a ____________ (higher / lower) gas pressure inside the bottle. The great atmospheric pressure outside forces the egg to fall into the bottle.
Higher
Lower
Every time the height rises by 100 m, the air pressure drops by 1 cmHg. If it is known that the air pressure of a place in a barometer is 70 cmHg, then what is the height of that place above the sea level?
200 m
400 m
600 m
800 m
