Review from the Past
The ____________ variable is changed by the scientist in an experiment.
independent
________________ show the structure of an object or system.
Scientific Models
What are the 3 main types of models?
physical, mathematical, and conceptual
A globe is an example of a ______________ physical model.
scale
The _____________ variable is plotted on the x-axis in a scatterplot.
independent
_____________ show the process or function of something.
Simulations
Name 2 examples of a physical model.
2 examples
Car crashes and aerospace procedures and equipment often undergo scientific _____________ to test their safety.
simulations
A scientific _____________ explains how something happens in the real world.
theory
Name 2 examples of each: scientific models and simulations
2 examples of each
Name two examples of a mathematical model.
chemical formula, equation, scatterplot, etc.
1 km = __________ cm
100,000 cm
A description of a specific relationship under specific conditions is called a __________.
scientific law
Name 3 reasons for why scientists use models and simulations.
Examine something too large or small to see
Examine something in a challenging location
Testing new theories safely
Making predictions safely
Examine how parts of a system interact
Name 2 examples of a conceptual model.
food web, water cycle, etc.
What is 0.00078 in scientific notation?
7.8 x 10^-4
empirical evidence
Name 3 uses of simulations in the real world.
Improve technology (ex: car safety, seatbelts on roller coasters)
Determine which variables to change
Test designs in a controlled environment
Save $ when testing new designs
Promote safety when testing new designs
Physical models can be classified as ________ models or _________ models depending on their size.
Name the terms and an example of each
life-size and scale
example of each
12,000 mm = ______ km
0.012 km