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Science Notes

9/15/11

142 cards·by Dee388403
Study this deck
Refers to the diverse ways in which scientists study the natural world and proposeexplanations based on the evidence they gather.
scientific inquiry
A well-tested explanation for a wide range of observations or experimental results.
scientific theory
A statement that describes what a scientist expects to happen every time under a particular set of conditions.
scientific law
Unlike a theory, a ____________ describes an observed pattern in nature without attempting to explain it.
scientific law
Having _____________ means that you understand basic scientific terms and principals well enough that you can evaluate imformation.
scientific literacy
When converting from left to right on KHDmdcm, you _________.
divide
When converting measurements from right to left KHDmdcm, you _____________.
multiply
meter is close to a ________.
yard
A kilometer is close to 1/2 _________.
mile
hectometer is close/equal to __________.
a football field
A millimeter is close to the _____________.
thickness of a needle
kilogram is close to ______________.
weight of a textbook
gram is close to _________.
weight of a dime
milligram is close to ___________.
grain of sand
liter is close to ________.
quart
millileter is close to ______________.
a drop of water
___________ involves the measurement of amount or dimensions.
quantitative
____________ is describing by using your senses. Numbers are usually not needed.
qualitative
______ system is the standard measurement system for the world.
SI
In the SI system: Length-______, mass-______, volume-_____, time-____, temperature-_____
meter, kilogram, leter, second, kelvin
_________ is the amount of matter in an object.
mass
_________ is the measure of the force gravity on an object.
weight
_________ is the amount of space an object takes up.
volume
_________= Mass ÷ Volume
density
Water Boils at _____˚F
212
Water boils at _____˚C
100
Water boils at ____˚K
373
Water freezes at _____˚F
32
Water freezes at ____˚C
0
Water freezes at ____˚K
273
___________= -459˚F
absolute zero
_________= -273˚C
absolute zero
_________= 0˚K
absolute zero
A ______________ is a number that shows how two units of measurement are related.
conversion factor
The conversion factor for the metric system is ____.
10
The coldest possible temperature.
absolute zero
vertical line on graph- ________
y-axis
horizontal line on graph- _______
x-axis
Idependant varible- manipulated (true or false)
true
Straight line- ______
linear
curved- _________
non-linear
____________ is how people change the world around them to meet their needs or to solve a practical problem.
technology
The curved upper suface of a liquid in a column of liquid.
meniscus
the goal of __________ is to improve the way people live.
technology
A product may become ________, or no longer used
obsolete
A _____ is made of parts that work together.
system
Technology has both ______ and ______ impacts on society.
good and bad
_____________ involves evaluating the possible problems compared to the expected advantages.
risk-benefit analysis
A _______ is a person who is trained to use both technological and scientific knowledge to solve practical problems.
engineer
When engineers _______________, they clearly _________ the problem they are trying to solve. Then they __________ the problem.
identify a need-define the problem-research
A __________ is any factor that limits or restricts a design.
constraint
The process of analyzing a design problem and finding a way to fix it is called ___________________.
troubleshooting
A _________ is a legal document issued by a government that gives the inventor rights to make, use, or sell the invention for a limited time
patent
If you want to use or sell a patented invention, first get the ______________ permission.
patent owner's
A _________ is an exchange in which one benifit is given up in order to obtain another period.
trade-off
___________ is a working model used to test a design.
prototype
What are the Product Design Steps?
identifiy a need, research the problem, design a solution, build a prototype, troubleshoot/redesign, communicate solution
The #1 most important lab safety rule is always follow _________ instructions!
teachers
A full balloon has _____ mass than the empty balloon
more
True or false: Air has mass
true
Density= ________ ÷ _________
mass, volume
What is the force pushing on an area or surface known as?
pressure
Air pressure is the result of the _______of a column of _____ pushing down on an ______.
weight, air, area
Normal Atmospheric pressure is ______ pounds/square inch
14.7
Air pressure changes constantly everywhere because different _________ of air move around.
densities
A __________ is an instrument that is used to measure air pressure.
barometer
A _____________ barometer consists of a glass tube open at the bottom end and patially filled with ___________.
mercury
The height of the mercury in the tube is the ______________.
air pressure
An ___________________ has an airtight metal chamber which is sensitive to air pressure.
aneroid barometer
Air pressure is measured in ______ or _________.
inches, millibars
_______________ is close to 30 in. of mercury.
Normal Air Pressure
____________is the distance above sea level.
altitude
Air pressure ________ as altitude ________.
decreases, increases
As you go up through the atmosphere, density _________.
decreases
Waves that can transfer electric and magnetic through the vacuum of space
electromagnetic waves
Waves that can transfer electric and magnetic through the vacuum of space
electromagnetic waves
The direct transfer of energy by electromagnetic waves is called_______
radiation
Electromagnetic waves with wavelengths that are longer than visible light but shorter than microwaves.
infrared radiation
Electromagnetic waves with wavelengths that are shorter than visible light but longer than X-rays.
ultraviolet radiation
Reflection of light in all directions
scattering of light
The process when heat is trapped in the atmosphere by water vapor, carbon dioxide, methane, and other gases that form the ozone layer.
the greenhouse effect
A measure of how hot or cold an object is compared to a reference point.
temperature
the total energy of motion in the particles of a substance
thermal energy
An instrument used to measure temperature, consisting of a thin glass tube that contains mercury
thermometer
The direct transfer of thermal energy from one substance to another substance that is touching.
conduction
The transfer of thermal energy by the movement of a fluid.
convection
The circulation of a fluid as it heats up and cools down
convection currents
The horizontal movement of air from an area of high pressure to an area of lower pressure.
wind
An instrument used to measure wind speed.
anemometer
A measure of cooling combining temperature and wind speed.
wind chill factor
winds that blow over short distances
local winds
The flow of cooler air from over an ocean or lake toward land
sea breeze
The flow of air from land to a body of water
land breeze
Winds that blow steadily from specific directions over long distances
global winds
The change that Earth’s rotation causes in the motion of objects and that explains how winds curve.
Coriolis effect
The distance in degrees north or south of the equator
latitude
____________ are the easterly winds in oceanic regions just above and below the equator.
trade winds
either of two belts or regions in the neighborhood of 30° N and 30° S latitude characterized by high pressure,calms,and light variable winds
horse latitude
The west-to-east winds that occur in the temperate zones of the Earth.
prevailing westerlies
About 10 km above Earth's surface are bands of high speed winds called ________.
jet streams
the journey water takes as it circulates from the land to the sky and back again.
water cycle
The process at which a liquid turns into vapor (ex. water cycle)
evaporation
a moderate degree of wetness especially of the atmosphere; condition; moistness; dampness.
humidity
Measure of the amount of water (moisture) in air as compared to the maximum amount of water the air can absorb, expressed as a percentage.
relative humidity
An instrument that uses the difference in readings between two thermometers, one having a wet bulb and the other having a dry bulb
psychrometer
water that collects as droplets on a cold surface when humid air is in contact with it.
condensation
a visible mass of condensed water vapor floating in the atmosphere
cloud
The temperature at which the air can no longer hold all of its water vapor
dew point
______________ are puffy clouds that sometimes look like pieces of floating cotton
cumulus clouds
_______________ are thin, wispy clouds blown by high winds into long streamers.
cirrus clouds
a cloudlike mass or layer of minute water droplets or ice crystals near the surface of the earth
fog
_________________ are uniform grayish clouds that often cover the entire sky.
stratus clouds
rain, snow, sleet, or hail that falls to the ground
precipitation
The condensed moisture of the atmosphere falling visibly in separate drops.
rain
a form of precipitation consisting of ice pellets, often mixed with rain or snow.
sleet
The name given to rain that falls when surface temperatures are below freezing.
freezing rain
Atmospheric water vapor frozen into ice crystals and falling in light white flakes or lying on the ground as a white layer.
snow
A long period of less precipitation than normal
drought
The dropping of crystals into clouds to cause rain.
cloud seeding
A device for collecting and measuring the amount of rain that falls.
rain gauge
An overflowing of a large amount of water beyond its normal confines, esp. over what is normally dry land
flood
A sudden local flood, typically due to heavy rain.
flash flood
A barrier constructed to hold back water and raise its level.
dam
An embankment built to prevent the overflow of a river.
levee
A local wind that blows from the land to a body of water.
land breeze
A local wind that blows from an ocean or a lake.
sea breeze
Winds that blow steadily from specific directions over long distances
global winds
The _____________ is when the Earth’s rotation makes global winds curve.
Coriolis effect
Regions near the equator with little or no wind are called the doldrums . TRUE OR FALSE
true
By using technological tools such as weather satellites and radar, scientists can provide _______
weather predictions
An instrument called a psychrometer is used to measure ___________.
relative humidity
Steady easterly winds between the equator and 30 degrees latitude are called_________.
trade winds
is a local wind that blows from an ocean or a lake.
sea breeze
a local wind that blows from the land to a body of water.
land breeze
Some gasses such as carbon dioxide hold heat in the atmosphere. This process is called the____________..
green house effect
The layers of the atmosphere are classified by their changes in ___________.
temperature
The freezing point of water is _ degrees C. or 32 degrees F.
0
The direct transfer of energy by electromagnetic waves is called ___________.
radiation
Winds are caused by differences in _________.
air pressure
The wind blowing over your skin removes body heat. The increased cooling that wind can cause is called the_________________.
wind chill factor
An instrument called an _______ is used to measure wind speed.
anemometer
_______ are winds that blow over a short distance. These are caused by unequal heating of the Earth’s surface within a small area.
local winds