42 terms

TysonBehrnsTEACHER

mass

a measure of the amount of matter in an object

volume

a measure of the size of an object or region in three-dimensional space

density

the ratio of the mass of a substance to the volume of the substance.

temperature

a measure of how hot (or cold) something is; specifically, a measure of the average kinetic energy of the particles in an-object

model

a pattern, plan, representation, o description design to show the structure or workings of an object, system, or concept

theory

a system of ideas that explains many related observations and is supported by a large amount of scientific investigation is called a(n) ______________

law

a descriptive statement or equation that reliably predicts events under certain conditions is called a(n) _________

independent

a factor that is deliberately changed in an experiment is called a(n)________________ variable.

dependent

the factor that can change as a result of manipulation and is measured is called a(n) ___________ variable.

axis

one of two or more reference lines in that mark the borders of a graph

mean

the number obtained by adding up the data for a given characteristic and dividing this sum by the number of individuals

median

the value of the middle item when data are arranged in order by size.

mode

the most frequently occurring value in a data set

slope

a measure of the slant line; the ratio of rise over run

What is a tool?

anything that helps you do a task

What are tools used for?

to take accurate measurements

to collect data

to evaluate and analyze data

to collect data

to evaluate and analyze data

kilogram

the basic SI unit of mass

liter

a unit used to express liquid volume

meter

the basic SI unit of length

cubic meter

a unit used to express the volume of larger solid objects

liters

A cubic meter is equal to 1,000 ____________

How do you calculate density?

D=m/v

conceptual model

used to explain why the universe seems to be expanding

physical model

used to help understand how a real shuttle blasts off into space

mathematical model

used to predict the weather

conceptual model

What type of model tries to put many ideas together to explain or summarize something?

How are models used by scientist

models can make a molecule easier to visualize

models can be used to summarize new info.

models are used to communicate difficult info.

models can be used to summarize new info.

models are used to communicate difficult info.

What does law tell you, and what does a law not tell you?

law tells you what happens, not why or how it happens.

Graphs make it easy to do what 2 things?

identify trends and make predictions

range

found by subtracting the smallest value of a variable from the largest value of the same variable

scale

is the size used for each box or grid mark on a graph

line of best fit

shows how data differ from the pattern; a smooth line drawn to include some but not all of the data points

data point

plotted by putting a dot on the graph for a pair of data in the table

trend

the pattern of data on a graph

nonlinear graph

a graph in which the relationship between variables cannot be shown with a straight line

linear graph

a graph in which the relationship between the independent variable and dependent variable can be shown

inverse

A relationship in which one variable increases while the other variable decreases.

Why is mathematics often called the "language of science"?

because it lets scientists share their findings in a language everyone understands

What is true of data that is accepted or supported by other scientist?

It is reproducible

What does the rise represent?

a vertical change (y)

What does the run represent?

a horizontal change (x)

How is the slope of a straight line calculated?

rise over run