Glossary Terms

Question 1

Acceleration

Answer 1

Rate of change of velocity with time.

Question 2

Airfoil

Answer 2

Object which creates lift when air is passed over its surface.

Question 3

Boyles’s Law

Answer 3

At a constant temperature, the volume of a gas is inversely proportional to the pressure.

Question 4

Bursting Force

Answer 4

Pressure multiplied by inches2. (Pxin2)

Pressure causing catastrophic weakness, i.e. rips, tears.

Question 5

Charles’ Law

Answer 5

At a fixed pressure, the volume of a gas is directly proportional to the absolute temperature.

Question 6

Doppler Effect

Answer 6

Change in wavelength that results when the source producing the waves is moving with respect to the receiver.

Question 7

Energy

Answer 7

The ability to do work

Question 8

Force

Answer 8

That which causes acceleration or distortion of a shape.

Question 9

Inertia

Answer 9

Property of an object that makes it resist change in its velocity.

Question 10

Kinetic Energy

Answer 10

Energy of motion

Question 11

Law of Conservation of mass-energy

Answer 11

In any change, the sum of the amount of matter and the amount of energy remains constant.

Question 12

Law of Conservation of Momentum

Answer 12

For any system, the total momentum (mass x velocity) of all bodies involved remains unchanged.

Question 13

Law of Gravitation

Answer 13

The gravitational force between two bodies is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Question 14

Lift

Answer 14

A force, created by an airfoil.

Question 15

Limit Load

Answer 15

The highest load factors that can be expected in normal operational situations.

Question 16

Longitudinal Waves

Answer 16

Waves in which the oscillation of the moving particles is parallel to the wave direction; for example, sound.

Question 17

Mass

Answer 17

Amount of matter in a body. A measure of the inertia of an object.

Question 18

Momentum

Answer 18

Mass of an object multiplied by its velocity.

Question 19

Motion, Newton’s Laws of –

Answer 19

1. A body continues in a state of rest or in a uniform straight line motion unless acted upon by an unbalanced force. (Inertia)
2. The change in motion of a body is proportional to the force applied. (F=mA)
3. To every action, there is an equal and opposite reaction.

Question 20

Potential Energy

Answer 20

Energy of position.

Question 21

Power

Answer 21

Rate at which work is done.

Question 22

Pressure

Answer 22

Measure of the energy in a volume.

Question 23

Torsion

Answer 23

Twisting stress.

Question 24

Ultimate Load

Answer 24

The load causing destructive failure. Usually 1.5 times the limit load.

Question 25

Weight

Answer 25

Measure of the pull of the force of gravity on a given mass.

Question 26

Work

Answer 26

Product of a force and the displacement of an object in the direction of the force. (Force x Distance)