Prologue
Terms
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copy deck
- When there is a balance between changes, it is called _____.
- dynamic equilibrium
- What is a prediction?
- A prediction is an inferance based on observations that indicate what will happen in the future.
- What is an observation?
- An observation is an interaction of one or more of the senses- sight, hearing, touch, taste, or smell- with the enviornment or surroundings
- What are some examples of intruments?
- Some examples of intruments are a telescope which allows us to look at the stars closer, and a scale which determines weight.
- What are the two measurement systems in use today?
-
The Metric and English Systems
- A _______ is a means of describing observations using numbers.
- measurement
- What are instruments?
- Instruments improve our ability to observe and to make measurements that would otherwise be very inaccurate or even impossible to make.
- T or F: The greater the mass of substance, the less its volume will be.
- False: The greater the mass of a substance, the greater its volume will be.
- The weight of a body may change with its location, and the mass _______
- naver changes.
- What is time?
- Time is the instent at which something happens or the period during which a change occurs.
- What is density?
- Density is the quantity of a material contained in a cirtin amount of space. For example, something densly packed has a large quantity of material crowded into a small amount of space.
- What is the balance between two forces?
- Equilibrium
- What is a frame of referance?
- A frame of referance is a basis for comparison.
- What kind of graph has both variables increasing?
- A direct
- T or F: No matter how large or small the sample, or what shape it is, the density of a spacific substance remains the same.
- True
- What type of graph has the independent variable increasing, and the dependent variable remaining the same?
- Static
- The boundary between two different materials or systems is called an ______.
- Interface
- What type of graph has a repeating pattern?
- Cyclic
- What is classification?
- Classification is the grouping of objects and events. Classification is based on observable properties. Classification makes observations more meaningful.
- What is the rate of change?
- How long something takes to occur
- What is an event?
- An event is when the properties of matter or a systema are altered.
- What is the amount of matter in an object?
- Mass
- What is change?
- Change is the occurance of an event.
- What type of graph has the independant variable increasing, while the dependent varible decreases?
- Indirect ot inverse
- What does the phase(state) of a sample of matter depend on?
- How closely packed the particals are.
- Objects denser then water will_____ in water.
- Sink
- What is volume?
- Volume is the amount of space an object takes up. The formula for volume is V=lwh, and is usually expressed in cubic centimeters (cm3)
- At what temperature does water have its greatest density?
- 4 degrees C, while it is still liquid
- _______ is a measure of force or weight on a given area.
- Pressure
- What is an inference?
- An inferance is an interprtation of one or more observations.
- What is percent-deviation from accepted value?
- It is the differance between the measured value and the accepted value divided by the accepted value and multipled by 100%. It is used to find the percentage error.
- What is speed?
- Speed is a maesure of the rate of motion.
- On earth's surface, what is weight?
- Weight is a measure of the pull of gravity on a quanity of matter.
- What is a measure of distance between two points?
- Length
- What is a standard unit?
- An accepted measurement aginst which other measurements can be compared.