Scientific 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

control
data
observation

Materials Needed

plastic wrap
cardboard
tape
scissors

Safety First

Clean up spills immediately to prevent slipping.
Use materials only as directed in the experiment.

Steps

Step 1 — Read

Review the background information on Scientific Argument before starting.

Step 2 — Do

Build a simple seismograph using a pen, cup, string, and paper. Shake the table and record the marks. Can you detect bigger vs. smaller shakes?

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 3

What makes a good scientific investigation?