Question

-pre
D Give one word for each of the following.
1. This is equal to one newton per square metre
2. Force per unit area
3. The pressure exerted by the weight of the air on an object on the Earth
4. A device used to measure atmospheric pressure
5. Liquids and gases are collectively called

Answer 1

Answer:

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Explanation:

1) pascal: Newtons/Square Meter is a unit that shows how the pascal unit is derived from other SI units. Pressure is defined as Force/Area and the SI unit for Force is newtons (N) and the SI unit for Area is Sq Meters (m²). 1 newton per square metre equals 1 pascal.

2) Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed. Gauge pressure (also spelled gage pressure) is the pressure relative to the ambient pressure.

3) Atmospheric pressure is exerted by the weight of the air in the atmosphere. Atmospheric pressure is defined as the force per unit area exerted against a surface by the weight of the air molecules above that surface. The pressure applied by this air on the unit area would be 14.7 pounds per square inch.

4) A barometer is a scientific instrument used to measure atmospheric pressure, also called barometric pressure.

5) Liquids and gases are called fluids because they can be made to flow, or move.