2
Lesson 2 of 84 · Information Processing
ExperimentHow Your Eyes See
What You'll Learn
Reflexes are automatic responses that happen without conscious thought. When you touch something hot, your hand pulls away before your brain even registers the pain.
Key Words
- organ
- skeleton
- muscle
Materials Needed
- cotton balls
- cups
- different scented items
- textured objects
Safety First
- Adult supervision recommended.
Steps
Step 1 — Read
Read and learn: Reflexes are automatic responses that happen without conscious thought. When you touch something hot, your hand pulls away before your brain even registers the pain.
Step 2 — Do
Follow the procedure carefully, step by step.
Step 3 — Observe
Watch carefully for any changes and note the time.
Step 4 — Record
Create a data table to organize your measurements.
Check Your Understanding
Question 1
1 of 3What is the largest organ of the human body?