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# Science Physics :)10

### 25 Definitions

Question | Answer |
---|---|

The formula for pressure isâ€” Pressure = ____________ | Pressure=Force/Area |

The SI unit of pressure is the Newton per square meter. (N/m2)This unit of pressure is also called the _______________. | Pascals |

_____________is a force exerted over an area on the surface of an object. | Pressure |

A _________ is a material that can easily flow. | Fluid |

As your elevation increases, atmospheric pressure_______. | Decreases |

Water pressure ______________as depth increases. | Increases |

You can measure atmospheric pressure with an instrument called ______________. | Barometer |

The __________force acts in the direction opposite to the force of gravity. | Buoyant |

___________ principle states that the buoyant force acting on a submerged object is equal to the weight of the fluidthe object displaces. | Pascal's |

A ship floats on the surface as long as the buoyant force acting on it is equal to its __________. | Weight |

The ______of a substance is its mass per unit volume. | Density |

The density of water is ____ g/cm3. | 1 g/cm3 |

The formula for density: Density = _______ | Mass/Velocity |

If the density of an object is equal to the density of the fluid in which it is immersed, the object will__________. | Neither rise nor sink |

To make a submarine dive, water is taken into its tanks. The __________ density makes its weight greater than the buoyant force. | Increased |

_______ __________ is the force when applied to a confined fluid, the change in pressure is transmitted equally to all parts of the fluid. | Pascals' principle |

A ___________system multiplies force by applying the force to a small surface area | Hydraulic System |

On December 17, 1903, the ______________ brothers plane flew for the first time. | Wright Brothers |

A fluid naturally flows from an area of ______ pressure to an area of ____ pressure. | High; Low |

_______________ principle states that as the speed of a moving fluid increases, the pressure with the fluid decreases. | Bernoulli's Priciple |

The 4 forces acting on an airplane are... | Lift, Drag, Thrust, and Gravity |

The pressure in a fluid decreases as the speed of the fluid increases is __________ __________. | Bernoulli's Principle |

Is our mixture of gases we call air a fluid? | Yes, its like water |

An increase in pressure on a confined fluid is transmitted equally to all parts of the fluid is know as _______ __________. | Pascal's Principle |

The buoyant force equals the weight of the displaced fluid is _______ __________. | Archimede's Principle |