Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
64 Cards in this Set
- Front
- Back
|
What is colliod
|
cloudy mixture in which the droplets or tiny particles are too small to seprerate out
|
|
|
What is concentration
|
the amount of the solute (usually in grams or kilograms) dissolved in a specific amount of solvent (usually in Litres of Mililitres) in a solution written g/ml or kg/L
|
|
|
What are Convex lens
|
piece of transparent material that is thicker in the middle that at the edges; light rays passing through it converge or come together
|
|
|
What are Concave lens
|
piece of transparent material that is thinner in the middle than at the edges; light rays passing through it diverge or spread out
|
|
|
What is diffusion
|
The movement of particles of a substance from an area of high concentration to lower concentration
|
|
|
What is Efficency
|
measurement of how well a machine or device uses energy; can be calculated by dividing mechanical advantage by speed ratio or dividing work output by work input
|
|
|
What is a fluid
|
anything that has no fixed shape can flow and takes the shape of its container
|
|
|
What is Input Force
|
Forced applied to operate a machine
|
|
|
What is a Saturated Solution
|
A solution in which no more solute can be dissolved at given temperature
|
|
|
What is the Universal Solvent
|
Water
|
|
|
What is a Solution
|
Homogeneous mixture; mixutre of 2 or more substances that look like 1
|
|
|
What is a Solute
|
A substance that dissolves in a solvent to form a solution
|
|
|
What is a Solvent
|
A substance that dissolves a solute to form a solution; water and alcohol are common solvents
|
|
|
What is Suspension
|
Cloudy Mixture in which droplets or tiny pieces of one substance are in another substance
|
|
|
What is Density
|
mass per unit of volume; calculated by mass of substance by its volume
|
|
|
What is a Hetrogeneous Mixture
|
mixture in which the different substances can be seen
|
|
|
What is the Particle Theory of Matter
|
it is the behavior of solids, liquids and gases. it states that all matter is made up of tiny particles that attract each other and have spaces between them
|
|
|
What is a un-saturated Solution
|
solution in which more solute can be dissolved at given temperature
|
|
|
what are gears
|
pair of wheels with teeth that interlink when they rotate together one gearwheel transfers turning motion and force to the other
|
|
|
inclined plane
|
simple machine made up of a flat surface such as a board at an angle to another flat surface;
|
|
|
Lever
|
simple machine made up of a rigid bar or plank that rotates on a fixed object called a fulcrum
|
|
|
Mechanical Advantage
|
amount by which a machine can multiply a force calculate by input force over output force
|
|
|
Screw
|
Simple machine that consists of a cylinder with a groove cut in a spiral on the outside, is an inclined plane rapped around a pole
|
|
|
Wedge
|
simple machine that looks like an incline plane but is forced into an object
|
|
|
Wheel and Axle
|
simple machine made up of two wheels of different diameters that turn together a longer motion on the wheel produces a shorter but more powerful motion at the axle
|
|
|
Work
|
done when a force acts on a object to make the object move
|
|
|
What are the 4 different types of mixtures
|
suspensions
colliods solutions mechanical mixtures |
|
|
Define Digital Imagaing
|
process of creating an image using a computer
|
|
|
what is a pixel and what does it stand for
|
short for; picture element
and indivdule element |
|
|
What is a Wave
|
A disturbance or variation transferring energy from one force to another. occuring whenever a force comes in contact with water
|
|
|
What is a Watershed
|
When all rivers, lakes, and ponds drain to once location in that area like an ocean.
|
|
|
What is the highland of a watershed Called
|
A continental Divide
|
|
|
What is the theory of techtonic plates
|
when the plates that make up the world shift to form different shapes of land
|
|
|
what makes the high spots in the ocean
|
when two plates come together and are pushing against each other making the land higher
|
|
|
what makes the low spots in the ocean
|
when one plate slides under another plate; once this happens there then becomes a big trench
|
|
|
What is a Valley glacier
|
A glacier that moves between mountain peaks
|
|
|
Why do glaciers move
|
because of the climate
|
|
|
when a glacier begins to move forward
|
An advancing glacier
|
|
|
when a glacier begins to melt and move it contains what in it and what happens
|
It contains such things are minerals and small rocks or boulders, when it is moving the small rocks or boulders gouge the land
|
|
|
Once the glaicers gouge our land what do they form
|
they form such things as small rivers ponds and if a glacier contains larger boulders it can make small lakes. they can also form trenchs and ditches.
|
|
|
when the climate is warmer what happens to the glaciers and what are they called
|
the glaciers begin to melt when this happens this is called a retreating glacier
|
|
|
what is the defintion of Climate
|
the average weather measured over a long period of time
|
|
|
what affects to large bodies of water have on the climate
|
well sense water holds heat longer it tends to keep those cities slightly warmer
|
|
|
What does having an ocean around you affect
|
Oceans can do as much as keep strong winds constanly following or affect the amount of precipation that area gets
|
|
|
what is chemical weathering
|
this is when minerals or chemicals in the water help eroide the banks of rivers streams and lakes. these chemicals can even eat away at rock
|
|
|
What causes tides
|
the gravatational force of the moon
|
|
|
What is a tide
|
the water level along the coast that is constantly changing
|
|
|
What causes a Tsunami
|
An earthquake on the ocean floort
|
|
|
Producing Light- What types of light is there?
|
Incandescent, Fluorescent, Phospherescent.
|
|
|
Producing Light- What are the 3 types of lights made up of?
|
incandescent is made up of metal wire. Fluorescent is made up of Gas. Phospherescent is show in the dark.
|
|
|
What are the properties of light
|
always travels in straigh lines, form of energy, can be reflected, travels at a constant speed.
|
|
|
Sources of light are what?
|
Artifical and Natural
|
|
|
What is EMR
|
Electromagnetic Radiation
|
|
|
Parts of the eye- what makes up the structure
|
retina, iris, pupil, sclera, optic nerve
|
|
|
What kind of problems can your eyes have and what do they mean
|
Near-sightedness and Far-sightedness. Near sightedness is when you see before the nerve and far sighted is when you see after the nerve
|
|
|
Light Devices. 2 types of camera's are?
|
Digital and optical
|
|
|
In a digital Camera what are key elements or parts.
|
Pixels, CCD( short for charge coupled device) resolution.
|
|
|
How does the EMR diagram go?
|
From slowest to fastest
Gamma x- rays uv rays light rays infared microwave tv radio |
|
|
What are ways to purificate salt water
|
evaporation, reverse osmosis, distillation, fillration.
|
|
|
How do humans pollute the water
|
leaking structures, people dumping into the rivers, agriculture, erosion of soil from forestry
|
|
|
What are the glaicer features
|
Esters, morains, drumlins, kettle Lakes, erotics
|
|
|
What is a watershed
|
a main drainage area where lakes, rivers and streams run to
|
|
|
What are some Fluid technologies
|
hydraulics, pneumatics, viscousity, density,
|
|
|
what is bouyancy
|
the upwards force causing something to float
|
