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1. All matter is made up of atoms and molecules that act like tiny particles
2. These tiny particles are always in motion
3. The higher the temperature of a substance, the faster the particles will move
4. At the same temperature, more massive particles will move slower than less massive particles |
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The buoyant force on an object in a fluid is an upward force = to the weight of the fluid the object displaces |
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As the speed of a fluid increases the pressure of that liquid decreases |
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A change in pressure at any point in an enclosed fluid will be transferred equally to all parts of the fluid |
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The knowledge gained from observing, stuyding and experimenting to find the nature of things |
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The study of any living things
ex. Biology, Zoology, Ecology, and Botony |
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How can earth and physical science affect eachother? |
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*The Sun's energy affects plants, and people
*How planets rotate |
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The study of nonliving things
ex. weather, universe, planets and space |
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The study of matter and energy
(branches into chemistry and physics) |
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The study of the changes of substances and how they're made |
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The study of energy and forces: the movement of substances (friction) |
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How does Physics relate to Life Science? |
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Sports- made up by Physics
Changing of Substances=digestion |
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How do Life Science, Earth Science, and Physical Science relate to one another? |
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You can't just study one branch, they all work together and intertwine |
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Knowledge for the sake of it
(how? why? what?)
ex. knowing the phases of the moon
*trivial knowledge* |
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aka. technology
The use of pure science to make our lives easier
ex. ipad- compact computer-holds more for less space |
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*Discovered beceause of curiosity
-What is wrong here?
-Why does this happen?
-Why is this not working? |
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Reasonable, reflective, responsiblel and skillful thinking that is focused on deciding what to believe or do
(thinking/reevaluating the situation) |
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Organized steps to solve a problem or answer a question |
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Steps of the Scientific Method |
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1.Observe the situation, research and form a ?
2.Develop and form a hypothesis
3.Test the hypothesis(perform a controlled experiment
4.Analyze the data- What does it mean?
5.Draw conclusions |
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Observing quality (describe)
*think QUALITY* |
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Observing # or amount (measurement)
*Think QUANTITY* |
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An explanation for some event based on observation, experimentation and reasoning (tells you why) |
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Describes how things work based on experiments and observations
(tells you how) |
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They BOTH
*allow predictions to be made
*have experiments that can be repeated |
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System of units used worldwide so scientists can easily share data with eachother
*latin of the science world |
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A standard for measurement, has a value that everyone knows
ex. meter- from doorknob to floor |
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length- ?
mass- ?
time- ?
temperature-?
electric current-?
quantity-?
luminous intensity-? |
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length-meters (m)
mass- kilograms(kg)
time-seconds(s)
temperature-Kelvin(K)
electric current-ampere(A)
quantity-mole(mol)
luminous intensity-candela(cd) |
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Combination of base units |
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*Understanding your data
*Besides understanding graphs, sometimes one must understand the measurements or calculations |
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How close something is to a target or goal
(ex. archery) |
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How close data is to a set of measurements |
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aka SigFigs
A way to tell how precise #s in a measurement are |
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Rules for determining Significant Figures |
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1. all non-0 #s are significant (any #1-9)
2.0's at the end of a # will only count if theres a decimal point
3.0's in the beginning of a # never count
4.0's between non-0 #s always count |
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An easier way to write a really large or really small # |
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Anything that has a mass and takes up space |
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*a substance that can't be broken down, already in lowest form possible
*basis for all creation
*made up of only one type of atoms |
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The smallest unit of an element that acts like that element |
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Periodic Table (of Elements) |
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*Made up of 118 elements currently
*Each represented by a chemical symbol |
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1 or 2 letters that are used to represent the name of the element. First letter is uppercase, second is lowercase |
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A substance made up of two or more different elements that are chemically combined |
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Ratio of Atoms in a compound |
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The smallest part of a compound |
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A substance of matter that has a definite chemical & physical property (one substance only) |
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A combination of 2 or more pure substances that are not chemically combined with no set ratios or amounts |
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CAN see the differences in the mixture |
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Substances are mixed equally, can't see any separation
aka solution
ex. iced tea, lemonade, air |
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When particles fall out/settle into the mixture |
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Particles are suspended but they can reflect light
ex. jello, pudding, mayo, smog/fog |
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Any characteristic or trait that describes the substance without changing the identity of the substance
(height,color,shape,mass,volume,
odor,texture,melting/boiling point, strength, hardness, ability to conduct electricty or heat or density) |
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How much matter is contained in a certain volume of a substance
-looking @ how tightly the atoms are packed together
-used to determine buoyancy
-derived unit |
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Describes how a substance reacts |
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Anything that flows or moves freely |
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The amount of force on a given area |
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Upward forces that exert on matter placed in that fluid[image] |
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To determine whether an object shall float or sink... |
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Buoyant Force > Weight of Object = Float
Buoyant Force < Weight of Object = Sink
Buoyant Force = Weight of Object = Object Suspended midliquid |
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Sphere-Less area for buoyant Force to act upon,float
Cyllinder-more force exerted on sides,sink |
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Average movement of the particles |
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aka heat
total movement of all of the particles (needs to know mass) |
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Fluids flow faster when moving through narrow surfaces |
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Resistance of a fluid to flow
(ex. when a container of liquid is tilted to allow flow to begin, the flowing particles will transfer energy to the stationary particles) |
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Viscosity Flowing w/ Liquids |
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High Viscosity- low flow, thick
Low Viscostiy- high flow, thin |
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