Vocabulary Review

Have you learned all the words you need to know for this unit? Click each of the section titles below. You will be presented with all of the important vocabulary words. If after reviewing you are still unsure about certain words, record them in the chart in the Notebook file below.

 Notebook

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Word Clouds


Vocabulary
properties: how a substance behaves or reacts under certain conditions
oxygen: gas required by all living things
nitrogen: gas that makes up 78% of the earth's atmosphere
gas: a state of matter where particles have no definite shape or volume
atmosphere: the thin layer of gas that covers the earth
pressure: force exerted by fluids in all directions
mass: quantity of matter in a substance
1. What is air?
Vocabulary
aerodynamics: forces acting on objects in flight
lift: upward force produced by air pressure
drag: force of air pushing against an object in motion
thrust: force required to move a flying object forward
propulsion: upward or forward thrust provided by engines
gravity: downwards forces pulling on objects on earth
weight: force of gravity acting on an object
force: a push or a pull
density: mass contained in a certain volume (related to how heavy something is)
Bernoulli's Principle: Faster moving air has lower pressure, and slower moving air has higher pressure.  This difference in air pressure can produce lift.
air resistance: movement of air particles pushing against something as it moves past
Newton's Third Law: For every action, there is an equal and opposite reaction.
propeller: revolving fan or blades that are spun by an engine
manipulated variable: factor or condition that is being tested in an experiment
2. What forces are involved in flight?
Vocabulary
helium: a gas that is less dense than air (usually used to fill balloons)
parachute: large canopy used to slow the descent of falling objects
buoyancy: upwards force exerted by fluids
adaptation: changes in structures or behaviours that help an animal survive
elevators: control pitch (on airplane wings)
ailerons: control roll of plane left or right (on airplane wings
wing: produce lift and allow gliding
fuselage: carries crew, cargo, and passengers
vertical stabilizer: balance side to side motions
horizontal stabilizer: balance forward and backward motions
rudder: controls yaw, which is temporary deviation from a straight course
tail: provides control and stability
yaw: moving left and right without moving up and down, especially of an airplane
pitch: tilting forward and backward, especially of an airplane
roll: movement left and right while also going up and down, especially of an airplane
airfoil: shape of a wing
3. What parts are needed for things to fly?