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Chpt 1 & 2 Vocab
Here are vocabulary words from Chpt 1 & 2, as well as the notes.
28
Science
7th Grade
10/17/2011

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Term
Constant
Definition
Variable that stays the same during an experiment
Term
Accuracy
Definition
Copmpares a measurement to the true value
Term
Bar Graph
Definition
A type of graph that uses bars of varying sizes to show relationships between variables.
Term
Circle Graph
Definition
A type of graph that shows the parts of a whole; sometimes called a pie graph, each piece of which represents a percentage of the total.
Term
Control
Definition
Sample that is treated like other experimental groups except that the independent variable is not applied to it
Term
Dependent Variable
Definition
Factor that is being measured during the experiment
Term
Descriptive Research
Definition
Answers scientific questions through observations
Term
Estimation
Definition
Method of making an educated guess at a measurement
Term
Experimental Research Design
Definition
Used to answer scientific questions by testing a hypothesis through the use of a series of carefully controlled steps
Term
Graph
Definition
Used to collect, organize, and summarize data in a visual way
Term
Hypothesis
Definition
Prediction or statement that can be tested and may be formed by prior knowledge, any previous observations, and new information
Term
Independent Variable
Definition
Variable that can be changed during an experiment
Term
Kelvin
Definition
SI unit for temperature
Term
Kilogram
Definition
SI unit for mass
Term
Line Graph
Definition
A type of graph used to show the relationship between two variables that are numbers on an x-axis and a y-axis
Term
Mass
Definition
Amount of matter in an object, which is measured in kilograms
Term
Measurement
Definition
Way to describe the world with numbers - for example, length, volume, mass, weight, and temperature
Term
Meter (m)
Definition
SI unit for length
Term
Model
Definition
Represents something that is too big, too small, too dangerous, too time consuming, too expenseive, or happens too quickly or too slowly to observe directly
Term
Precision
Definition
Describes how close measurements are to each other
Term
Rate
Definition
Amount of change of one measurement in a given amount of time
Term
Science
Definition
Process used to investigate what is happening around us in order to solve problems or answer questions
Term
Scientific Methods
Definition
Ways to solve problems that can include step-by-step plans, making models, and carefully thought-out experiments
Term
SI
Definition
International System of Units, related by multiples of 10, that allows quantities to be measured in the exact same way throughout the world
Term
Table
Definition
Displays information in rows and columns, making it easier to read and understand
Term
Technology
Definition
Application of science to make useful products and tools, such as computers
Term
Meniscus
Definition
The curved upper surface on a column of liquid; often observed in a graduated cylinder
Term
Parallax
Definition
The apparant difference in an object or measurement when not observed in a straight line; often observed in measurements not taken at eye level
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