Science Unit 3
Terms
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- Force per unit
- Pressure
- Force of attraction between two objects caused by their mass
- Gravity
- Liquids and gases
- Fluids
- Force acting between two surfaces touching each other
- Friction
- Force caused by gravity
- Weight
- Inertia measures this
- Mass
- Force that causes an object to float
- Buoyant
- Increase in speed of a fluid decreases the pressure of the fluid
- Bernolli’s principle
- When air resistance and gravity are balanced
- Terminal velocity
- Mass / Volume =
- Density
- Friction due to air
- Air resistance
- The elliptical path one body follows around another due to gravity
- Orbit
- When an outside pressure is applied to any point in a container, that pressure is transmitted throughout the fluid with equal strength
- Pascal’s principle
- Length x Width x Height =
- Volume
- What is the density of a plastic block with a height of 4cm, length of 2cm, and a width of 1cm, and a mass of 16 grams?
- 2 Pa
- A book weighing 10N covers an area of 1 square meter, what is the pressure of the book?
- 10 Pa
- An object weighing 20 N is immersed in water, it displaces water that weighs 5N, while in the water, the object weighs?
- 15 N
- Where would you generally find the greatest air pressure on the earth?
- Sea level
- The strength of gravitational force between two objects depends on the objects?
- Mass and distance between them
- Dropping a shot put and softball from the same height, which would land first?
- Both would fall at the same rate of speed, 9.8 m/s/s
- Air pressure increases with?
- Increased speed and surface area
- F=MG
- Force = Mass x gravity
- According to Pascal’s principle, when you apply pressure to a fluid in a container, the additional pressure
- Is transmitted throughout with equal strength
- What does dropping things in a vacuum eliminate?
- Air resistance
- Why are hydraulics of benefit?
- Allows one to use greater forces with less effort