1.1
What is Science?
Science is the systematic study of natural events and conditions.
What are the three kinds of variables in an experiment?
-independent or manipulative
-dependent or responding
-control or constant
What is a model?
A model is a representation of an object or a process that allows scientists to study something in greater detail.
What is the base unit for temperature?
kelvin
What are the three types of models?
-physical
-mathematical
-conceptual
What is empirical evidence?
Empirical evidence is evidence that includes measurements and observations.
What is a scientific law?
A scientific law is a description of a specific relationship under given conditions in the natural world.
What axis usually represents the independent variable?
x-axis
What is the abbreviation of the international system of measurements?
S.I.
Why do scientists use models and simulations?
Scientists use models and simulations to answer difficult questions, to represent complex systems, to test new ideas, and to make predictions.
What is involved in scientific work?
Curiosity, logic, skepticism, objectivity, and careful observation are involved in scientific work.
What is a scientific theory?
A scientific theory is a well-supported explanation of nature.
In what type of graph are linear and nonlinear relationships shown?
line graph
What is the derived unit of weight?
Newton
What are some types of physical models?
-scale
-life-size
What are two traits of pseudoscience?
The traits of pseudoscience are that there is little or no evidence to support it and it can't be proven wrong.
The scientific ___________ describes what happens, but a scientific __________ describes for what reason it happens.
The scientific law describes what happens, but a scientific theory describes for what reason it happens.
What is an independent variable?
An independent variable is a variable that is deliberately manipulated in an investigation.
What is the formula for calculating density?
Density=mass/volume
What are some types of mathematical models?
-equations and graphs
-chemical formulas and equations
Why should you be skeptical of some advertisements?
You should be skeptical of some advertisements because they can be scams or can be exaggerated.
Who was the first female to perform heart surgery?
Myra Logan
What is a dependent variable?
A dependent variable is a variable that changes as a result of the manipulation of the independent variable.
What does the prefix kilo- mean?
1,000
Why are simulations used?
Simulations are used to perform experiments in a controlled environment.