ATBakk 14/15 ENG3UE_Gr.1 WS15/16
Vocabulary for written exam
Vocabulary for written exam
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to propel
Rockets are usually propelled by a chemical reaction.
antreiben
velocity
The velocity of an object is the rate of change of its position.
Geschwindigkeit
inertial frames of reference
An inertial frame of reference is one that has constant velocity.
Inertialsysteme
friction
Most of the daily activities are dependent on friction.
Reibung
inertia
Newton's first law is also called "the law of inertia".
Trägheit
to exert
A ball lying on a table would never move unless you exert unbalanced force.
ausüben
combustion
Rockets need oxygen for their combustion.
Verbrennung
pair of forces
A pair of forces consists of two forces which are equal in magnitude but opposite in direction.
Kräftepaar
elastic modulus
The Young Modulus is also known as the elastic modulus or tensile modulus E.
Elastizitätsmodul
ductile
Although both metals are very soft and ductile, the resulting aluminium alloy will be much stronger.
dehnbar
division
The primary division is into elastic and plastic deformation.
Unterteilung
yield section
The first area of the plastic deformation is called yield section.
Fließbereich
segmented
The graph is segmented in three areas.
unterteilt
necking
During necking, the material can no longer withstand the maximum stress.
Einschnürung
brittle
Glas is a brittle material , hard, strong in compression, weak in tension.
spröd
occurs
Deformation occurs when a force acts on an object.
kommt vor , tritt auf
snap
When the wind is too strong, it could snap the tree completely.
umknicken
lift
In order to fly an airplane the lift must be higher than the weight.
heben
thrust
Each moveable object needs a thrust.
Schub/Hieb
drag
After an object starts to fly the drag force acts on this object.
ziehen
to flee
Da Vinci had to flee from Milano after France conquered Milano.
flüchten
acceleration
By raising the acceleration the velocity boosts.
Beschleunigung
velocity
By raising the acceleration the velocity boosts.
schnelligkeit
(Upper/Lower) surface
On the lower surface acts more pressure than on the upper surface.
(Obere/Untere) Fläche
wing
The wright brothers invented the moveable wing.
Flügel
act on
On every object acts the force of gravity.
wirken
density
The density of the air changes with temperature.
Dichte
altitude
The density of the air changes with altitude.
Höhe
eigen frequency, natural frequency
The Natural frequency is the frequency at which a system oscillates whitout any external influences.
Eigenfrequenz
resonance frequency
At resonance frequencies the oscillation amplitude reaches a maximum.
Resonanzfrequenz
resonant circuit
An electrical resonant circuit is a vibratory system, which is often used in radios.
Schwingkreis
damping
High oscillation amplitudes are often caused by low damping.
Dämpfung
phenomenon
A phenomenon is any observable occurrence.
Phänomen
pendulum
A pendulum periodically converts energy from potential to kinetic energy and vice versa.
Pendel
vibratory
An electrical resonant circuit is a vibratory system, which is often used in radios.
schwingungsfähig
resonance disaster
A resonance disaster is the destruction of a vibratory system caused by resonance.
Resonanzkatastrophe
to orbit
Electrons which are located in the atomic shell, orbit the atomic nucleus.
umkreisen
atomic shell
Electrons, which are located in the atomic shell, orbit the atomic nucleus.
Atomhülle
vector diagram
Zeigerdiagramm
