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science final
a+
50
Other
8th Grade
05/23/2011

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Term
adhesion
Definition
Attraction in the molecules between the water and the surface
Term
The effects on wax paper(adhesion)
Definition
weak attraction
Term
The effects on plastic wrap(adhesion)
Definition
not a strong attraction but stronger than wax paper
Term
The effects on paper towel(adhesion)
Definition
very strong attraction, water was absorbed
Term
Effects on soap film and wire frames (adhesion)
Definition
the soap is attracted to the frame and then when you flick your wrist the air pressure comes and makes a bubble
Term
Effects on soap film and funnel (adhesion)
Definition
the soap is attracted to the sides of the funnel and trys to move up to become smaller
Term
Effects on soap films in air(bubbles)(adhesion)
Definition
the soap film is attracted to the wire frame and then stops once the bubble is made
Term
Cohesion
Definition
Attracion within molecules, does not change
Term
The effects on wax paper(cohesion)
Definition
strong attraction, stays together
Term
The effects on plastic wrap(cohesion)
Definition
medium strength attracion, together but kind of squishy
Term
The effects on paper towel(cohesion)
Definition
weak attraction, absorbed into the paper towel
Term
Effects on soap film and wire frames (cohesion)
Definition
the soap stays together with cohesion and then when the bubble is formed it is because of cohesion
Term
Effects on soap film and funnel(cohesion)
Definition
the soap film moves up the funnel because it is moving to stronger cohesion (so the soap is closer together)
Term
Effects on soap films in air(bubbles)(cohesion)
Definition
When the bubble is formed it is because the soap stays together with cohesion
Term
Air pressure
Definition
the pressure in the air on the Earth
Term
The effects on wax paper,plastic wrap ,paper towel(air pressure)
Definition
No effect same air pressure on each subject
Term
The effects on soap film and wire frames(air pressure)
Definition
When you flick your wrist air pressure is caught within the bubble and it floats
Term
the effects on soap film and funnel (air pressure)
Definition
when you add the second film there is air pressure between them
Term
the effects on soap films in air(bubbles) (air pressure)
Definition
the air pressure is within the bubble
Term
Gravity
Definition
a force that pulls things to the center of the earth
Term
he effects on wax paper,plastic wrap ,paper towel( gravity)
Definition
the same it is not changed within the experiments
Term
Effect on different sized drops ( gravity)
Definition
not a greater effect but is more visible
Term
Effect on soap film and wire frames ( gravity)
Definition
it makes the string from the wire droop
Term
Effect on soap film and glass funnels ( gravity)
Definition
no effect
Term
Effect on soap films in air(bubbles) ( gravity)
Definition
the gravity pulls down the liquid stop until it gets to the bottom and then it pops
Term
forces
Definition
vector and scalar quantities
Term
vector quantities
Definition
quantities that express both magnitude and direction
Term
scalar quantities
Definition
quantities that measure amount or magnitude only
Term
vectors
Definition
to represent forces on a sheet of paper, vector diagrams are used in which the forces are represented
Term
represented
Definition
shown in a diagram
Term
component forces
Definition
the forces that produce a resultant force
Term
resultant forces
Definition
a single force that results from a combination of forces
Term
equilibriant forces
Definition
a force that balances the resultant force
Term
two in the same direction
Definition
the resultant force produced is equal to the sum of the 2 forces
Term
Two in opposite directions
Definition
the resultant force produced is equal to the difference between 2 forces
Term
two acting at 90°
Definition
the resultant is the diagonal of a parallelogram of force
Term
Simple Machines
Definition
incline plane, pulleys
Term
Incline plane
Definition
generally used to slide and object from one level to a higher level with out actually lifting the object, a ramp
Term
De
Definition
the length of the inclined plane, the length the object moves, distance of effort
Term
Dr
Definition
the height of the inclined plane, distance of resistance
Term
AE
Definition
the actual effort
Term
R
Definition
the object being moved, resistance
Term
taking pictures
Definition
exposure can be from half a second to a minute
light rays travel in a straight line so the picture becomes inverted and upsidedown
the background should contrast the object so the object can be seen
Term
Developing
Definition
developer,water fixer stop bath
Term
Developer
Definition
develops the picture for 90 seconds
Term
fixer
Definition
Stops the picture from developing more for 15-20 seconds
Term
stop bath
Definition
Fixs the photo so it doesnt change for 2 or more minutes
Term
water
Definition
to rinse off the excess of chemicals
Term
Sound
Definition
sound is a vibration that travels in waves
Term
Wave characteristics
Definition
wavelength,frequency,speed,amplitude
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