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7G Science Test Ch1

Terms

undefined, object
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inquiry
Scientific ____________________ refers to the diverse ways in which scientists study the natural world and propose explanations based on the evidence they gather.
Data
the facts, figures, and other evidence gathered through observations
SI
International System of Units, (for the French, Systeme International d'Unites
Hypothesis
ba possible explanation for a set of observations or answer to a scientific question.
dependent
In a scientific experiment, the factor that may change in response to the manipulated variable is called the responding or ____________________ variable.
Feedback
information a system uses to monitor the input, process, and output so that the system can adjust itself to meet the goal.
Kilo-
k = 1,000
Patent
a legal document issued by a government that gives the inventor exclusive rights to make, use, or sell the invention for a limited time.
Operational Definition
a statement that describes how to measure a p[articular variable or define a particular term.
Metric System
a system of measurement based on the number 10
Conclusion
at least 5 sentences
Linear graph
a line graph in which the data points yield a straight line
Trade-off
an exchange in which one benefit is given up in order to obtain another benefit.
Horizontal axis
the X axis
Scientific Inquiry
the diverse ways scientists study the natural world and propose explanations based on the evidence they gather.
Volume
the amount of space an object takes up
hypothesis
Proposing an explanation for the changing colors of the sky is an example of a(n) ____________________.
The US is the only Industrial Country that doesn't use _________
the metric system
Origin
where X and Y intersect, coordinate (0,0)
Goal
purpose
Graph
a picture of your data
Scientific Literacy
means that you understand basic scientific terms and principles well enough that you can evaluated information, make personal decisions, and take part in public affairs
government
A patent is a legal document issued by a(n) ____________________.
Deka-
da = 10
The graph used in science class
line and bar graph
Risk-benefit analysis
evaluating the possible problems or risks, of a technology compared to the expected advantages or benefits.
steepness
Slope can also be described as the ____________________ of a graph line.
Mass
a measure of the amount of matter an object contains
Scientific Theory
a well-tested explanation for a wide range of observations or experimental results
10
Each unit in the SI system is ____________________ times larger than the next smallest unit.
Density
a measure of how much mass is contained in a given volume
Controlled Experiment
an experiment in which only one variable is manipulated at a time
Prototype
a working model used to test a design.
Engineer
a person who is trained to use both technological and scientific knowledge to solve problems.
Data point
a point on a graph for each piece of data
Vertical axis
the Y axis
All systems have:
Goal, Input, Process, Output, and Feedback.
Slope
how much y changes for every change in x
society
A group of people who live together in an area and have certain things in common make up a(n) ____________________.
Nonlinear graph
a line graph in which the data points do not fall along a straight line
Meniscus
the top surface of the water in a cylinder that is curved6
Scientific revolution
historical changes in thought & belief, to changes in social & institutional organization, that unfolded in Europe between roughly 1550-1700
Obsolete
A product that is no longer used is said to be
Weight
a measure of the force of gravity acting on an object
Centi-
c = 0.01
rules
You should make sure you know the ____________________ and use of safety equipment in the lab.
Responding Variable
the factor that may change in response to the manipulated variable
Technology
how people change the world around them to meet their needs or to solve a problem
Scientific Law
a statement that describges what scientists expect to happen every time under a particular set of conditions
Process
a swquence of actions that the system undergoes.
Density formula
Density = Mass / Volume
Constraint
any factor that limits or restricts a design
Deduction
reasoning from the general to the specific
scientific literacy
By having ____________________, you will be able to identify good sources of scientific information, evaluate them for accuracy, and apply the knowledge to questions or problems in your life.
Line of best fit
a line between data points that reflect the general pattern. It may not touch any data points but is the best fit among the points.
Milli-
m - 0.001
Troubleshooting
Identifying the cause of any problems in a design is an example of
The three main types of graphs are the line graph, the bar graph, and the circle or pie graph.............
line graph, bar graph, and pie graph
redesign
After troubleshooting problems with a product, engineers ____________________ it.
Output
a result or product generated from a process
needs
Technology changes the world to meet human ____________________.
model
A virtual ____________________ of a product may be tested using computers.
Hecto-
h = 100
Coordinate
a pair of numbers used to determine the position of a data point on a graph
System
A group of parts that work together is called a
Brainstorming
a process in which group members freely suggest any creative solutions that come to mind.
Deci-
d = 0.1
Input
something that is put into a system in order to reach a goal
Scientific Inquiry Format
Problem, Hypothesis, Materials, Procedures, Results, Conclusions
Manipulated Variable
the one variable that is purposely changed to test a hypothesis

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