Grade 8 Science: Understanding Fluids
This worksheet covers fundamental concepts of fluids, including states of matter, density, pressure, and buoyancy, suitable for Grade 8 science students.
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Grade 8 Science: Understanding Fluids
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Date:
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Read each question carefully and answer to the best of your ability. Show all your work for calculations.
1. Which of the following is NOT a characteristic of a fluid?
Ability to flow
Takes the shape of its container
Has a definite shape
Particles are able to move past each other
2. What is the SI unit for pressure?
Newton (N)
Kilogram (kg)
Pascal (Pa)
Joule (J)
3. The amount of force exerted per unit area is called .
4. Archimedes' principle states that the buoyant force on an object is equal to the of the fluid displaced by the object.
5. A substance that has no definite shape and takes the shape of its container is known as a .
6. Gases are considered fluids because their particles can move freely and they can be compressed.
True
False
7. An object will float if its density is greater than the density of the fluid it is in.
True
False
8. Explain the difference between a fluid and a solid in terms of particle arrangement and movement.
9. Describe how a submarine is able to sink and float in water, applying the concept of buoyancy.
10. A block of wood has a mass of 300 g and a volume of 400 cm³. Will this block float or sink in water (density of water = 1 g/cm³)? Show your calculations.
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