4
Lesson 4 of 84 · Engineering and Design
ExperimentScientific Models: Representing Reality
What You'll Learn
Models help scientists represent complex systems. Physical models (like a globe), mathematical models (like equations), and computer models all simplify reality to make it easier to study.
Key Words
- experiment
- data
- observation
Materials Needed
- cups
- aluminum foil
- ruler
- markers
- popsicle sticks
- pennies
Safety First
- Handle glass items carefully to avoid breakage.
- Do not mix unknown chemicals together.
- Tie back long hair before starting the experiment.
Steps
Step 1 — Read
Read and learn: Models help scientists represent complex systems. Physical models (like a globe), mathematical models (like equations), and computer models all simplify reality to make it easier to study.
Step 2 — Do
Conduct the experiment by following the instructions.
Step 3 — Observe
Look for patterns in your observations.
Step 4 — Record
Make a graph or chart showing your results.
Check Your Understanding
Question 1
1 of 3What makes a good scientific investigation?