68
Lesson 68 of 84 · Forces
ExperimentBuilding a Marble Run (Part 3)
What You'll Learn
A force is a push or a pull that can make things move, stop, or change direction.
Key Words
- attract
- repel
Materials Needed
- string
- weights
- tape
Safety First
- Be careful with scissors — ask an adult for help if needed.
- Do not look directly at the sun or bright lights.
- Clean up spills immediately to prevent slipping.
Steps
Step 1 — Read
Read and learn: A force is a push or a pull that can make things move, stop, or change direction.
Step 2 — Do
Follow the steps one at a time.
Step 3 — Observe
Look for something that changed. What is it?
Step 4 — Record
Circle the correct answer on your worksheet.
Check Your Understanding
Question 1
1 of 3What is a push?