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WorksheetsPhysics and Its Concepts
Total questions: 15
Worksheet time: 8mins
1. What is meant by matter?
Anything that occupies space.
Anything that occupies space and has weight.
What are the three basic physical states in which matter can exist?
Solid, liquid, and gas.
solid, rock, liquid.
liquid, solid, air
What is meant by pressure?
Mass over a given area.
Force that acts on a unit of area.
What is the standard sea level atmospheric pressure expressed in inches of mercury and in pounds per square inch?
29.92 inches of mercury and 14.69 pounds per square inch.
25.92 inches of mercury and 15.69 pounds per square inch.
What characteristic of the atmosphere determines the speed of sound?
Pressure.
Temperature.
Relative Humidity.
What is meant by the fulcrum of a lever?
The point or support on which a lever pivots.
The point about which the lever rotates.
Choices 1 and 2 are correct.
What formula is used to find the amount of work done when an object is moved across a floor?
Work = Force x Distance
Work = Time x Distance.
What determines the mechanical advantage of an arrangement of ropes and pulleys?
The number of pulleys that support the weight.
The number of ropes that support the weight.
What determines the mechanical advantage of a gear train?
The ratio between the number of teeth on the drive gear and the number of teeth on the driven gear.
Choices 1 and 2 are correct.
What are three methods of heat transfer?
Conduction, convection and radiation.
All choices above are correct.
What is meant by the absolute humidity of the atmosphere?
The mass of water vapor present in a unit volume of moist air.
The actual amount of water that is in a given volume of air.
Choice 1 and 2 are correct.
What is meant by relative wind with regard to an airfoil?
The velocity or direction of airflow with respect to the body it surrounds, especially an airfoil.
The direction the wind strikes an airfoil.
Choice 1 and 2 are correct.
What is meant by weight?
The measure of the force of gravity acting on a body.
Weight is the gravitational force acting on a body
Choice 1 and 2 are correct.
What is meant by thrust?
The forward aerodynamic force produced by a propeller, fan, or turbojet engine as it forces a mass of air to the rear, behind the airplane.
The force produced by a propeller or by a jet or rocket engine that drives a vehicle (such as an aircraft) forward.
Choice 1 and 2 are correct.
What is meant by drag?
The aerodynamic force acting in the same plane as the relative wind striking an airfoil. Drag acts in the direction opposite to that of thrust.
The retarding force acting on a body (such as an airplane) moving through a fluid (such as air) parallel and opposite to the direction of motion.
Choice 1 and 2 are correct.
