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- 1. Multiple Choice
Which two forces act on an object in water?
gravity
friction
weight
upthrust
- 2. Multiple Choice
What happens if the weight of an object is equal to or less than the upthrust?
It floats
It sinks
It spins
It explodes!
- 3. Multiple Choice
What is the scientific word for 'floating'
levitating
suspended
buoyancy
hovering
- 4. Multiple Choice
What happens if the weight of an object is greater than the upthrust?
it floats
it sinks
it bounces
it vibrates
- 5. Multiple ChoiceArmy tank tracks are useful for travelling through the mud because..they decrease the force the vehicle exerts on the groundthey increase the force the vehicle exerts on the groundthey decrease the pressure the vehicle exerts on the groundthey increase the pressure the vehicle exerts on the ground
- 6. Multiple Choice
Where would you find the largest pressure?
At the bottom of the ocean
At the top of Mt Everest
Close to ground in Cuckfield
In a rockpool on the Great Barrier Reef
- 7. Multiple ChoiceThe amount of force pushing on an area is the definition of....FluidViscosityBarometerPressure
- 8. Multiple Choice
Look at the pressure triangle. How do we calculate the area?f ÷ af x pp x ff ÷ p - 9. Multiple ChoicePressure is measured in what unitsNewtonsm/sPascalsMoles
- 10. Multiple ChoicePressure can be measured in Pascales (Pa) or Newtons per square metre.
1 Pa = 1N/m2TrueFalse - 11. Multiple ChoiceHow can we increase the gas pressure inside a sealed container?Increase the number of particles inside the containerIncrease the temperatureDecrease the volume of the containerAll of these
- 12. Multiple Choice
When you increase your depth under water, the water pressure on your body
increases
decreases
stays the same
- 13. Multiple Choice
A 20N weight is hung from a spring balance which reads 17N when it is completely submerged in water. What is the upthrust of the body of water?
37N
20N
17N
3N
- 14. Multiple Choice
Diagram shows a U-tube filled with two liquids, X and Y which are immiscible. The heights of the liquid columns of X and Y from level P are 8 cm and 4 cm respectively. Which of the following statements is true?
The density of X is less than the density of Y.
The liquid pressure is higher in column X than in column Y at level P.
The densities of liquids X and Y are equal.
- 15. Multiple Choice
A submarine has a surface area of 300 m2.
The density of sea water is 1050 kg m–3.
At what depth under the sea, will the additionalpressure on the submarine be 5 × 105 Pa?
[Take g = 10 N kg–1]
47.62 m
67.62 m
87.62 m
57.62 m
- 16. Multiple Choice
The figure below shows a reservoir on a hill. The reservoir supplies water to a water tank on a tall building.
Calculate the water pressure at X.
(Density of water = 1000 kg m–3)
1.4×109 Nm–2
1.4×102 Nm–2
1.4×105 Nm–2
1.4×108 Nm–2
- 17. Multiple Choice
An object weighing 30 N displaces a volume of water with a weight 20 N. What will the object do?
It will sink
It will float
It will fly
None of these answers
- 18. Multiple ChoiceDiagram 10 shows a diver in the sea
Which physical quantity will increase when the diver dives deeper?PressureBuoyant ForceAtmospheric pressureGravitational field strength - 19. Multiple ChoiceObjects A-D are in water. Which is the most dense?ABCD
- 20. Multiple ChoiceWhy do plants wilt?low turgor pressurehigh turgor pressuretoo much waterno cell membrane
- Answer choicesTagsAnswer choicesTags