Scientific Models: Representing Reality (Part 3)

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

scissors
straws
paper clips

Safety First

Handle glass items carefully to avoid breakage.
Do not mix unknown chemicals together.

Steps

Step 1 — Read

Review the background information on Data and Evidence 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?