physical science chapter 1

the exactness of a measurement

a decimal place that determines the amount of rounding off to be done on a measurement

The two main branches of physical science are chemistry and life science. t/f?

knowledge obtained by observing natural events in order to discover facts or make laws

a summary of many experimental results and observations; tells how things work

a factor that can change in an experiment in order to test a hypothesis

A scientific theory can never be changed or replaced. t/f?

a representation of an object or event that is studied to understand the real object or event

A scientific theory must follow 3 rules in order to be called a theory. t/f?

a measure of the gravitational force exerted on an object

a method of expressing a quantity as a number multiplied by 10 to the appropriate power

a description of how close a measurement is to the true value of a quantity measured

Drawings, computer models, or mathematical models are all examples of scientific models. t/f?

a measure of the size of a body or region in a 3D space

the application of science for practical purposes

observation, research, hypothesis, experiment, analyze data, &draw conclusions are part of the

chemistry is the study of matter and its changes. t/f?

describes mathematical equations that describe scientific laws or theories

an explanation for some phenomenon that is based on observation, experimentation, & reasoning

In an experiment, what affects the outcome of the experiment?

A combination of SI base units is called derived units. t/f?

what graph makes it clear how large or small differences in individual values are?

variables are always changing. they can never be kept constant. t/f?

What graph is useful for displaying data that are parts of a whole?

the ability to assess claims &to make judgments on the basis of objective and supported reasons

a measure of the straight line distance between two points

a series of steps followed to solve problems. there are 6 steps.

Qualitative statements make communicating in science easier. t/f?

Expressing data with significant figures tells others how precisely a measurement is made. t/f?

in a line graph, the dependent variable is usually on the

physics is the study of forces and energy. t/f?

in a line graph, the independent variable is usually on the

What describes in words something you have seen many times?

Science and technology never depend on one another. t/f?

A scientific law can be tested by repeated experiments. t/f?

telescopes and computer generated models are examples of scientific tools. t/f?

A scientific law always explains why a process occurs. t/f?

which of these express 100,000,000 in scientific notation

Critical thinking is used in the scientific method. t/f?

which graph is useful when comparing similar data for several individual items

a measure of the amount of matter in an object

what is 10⁵ in long form?

the search for scientific knowledge is called

Which graph is best for displaying data that changes?

What do scientists use for measuring?