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

cups
aluminum foil
ruler

Safety First

Tie back long hair before starting the experiment.
Protect your work surface with newspaper or plastic.
Adult supervision recommended.

Steps

Step 1 — Read

Review the background information on Human Impacts on Earth 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?