Unit 1 Flashcards
Physical science is the study of
matter and energy.
object contains more matter than a 15 kg object.
20,000 g
The big bang is considered to be
a theory.
Scientific knowledge changes and grows due to
asking new questions and reexamining old ones.
the use of new technologies.
the discovery of new information.
What tool is used to measure mass?
balance
What tool is used to measure the volume of an irregularly-shaped solid?
graduated cylinder
Critical thinking
is based on facts. uses observations.. uses logic.
A prototype, or ____, of a new car can show investors the features a car company would like to include in their latest design.
model
Scientific models
represent scientific ideas and objects.
are tools that are used to conduct investigations.
illustrate theories.
A measurement that is accurate is one that
is close to the true value.
An important science skill is critical thinking. This means
thinking logically to solve a problem.
Which graph best shows a change in data over time?
line graph
Which type of graph best shows data that are parts of a whole?
pie chart
How many significant figures are in 7.357?
three
theory/law
A theory explains why something happens; a law only states what happens.
