First, check out these 3 cool videos of barnacles feeding (click on the highlighted text). The first 2 are from last week; the last one is new:
This video shows barnacles feeding on bioluminescent (glow-in-the-dark) plankton.
This video shows a giant barnacle feeding up close.
This video shows barnacles feeding in breaking waves.
After watching the videos, create a list of at least 3 questions that come to mind about the environmental conditions which may affect the rate of barnacle feeding. Think about where barnacles live and how they feed. Consider when barnacles might need food and when they might not. When you are finished with your list of questions, convert each question into a statement which begins with "I wonder how...".
Example:
Question: How does water temperature affect the rate of barnacle feeding?
Statement: I wonder how water temperature might affect the rate of barnacle feeding.
Reminder: Bring your What is a Hypothesis? (Part 1) handouts to class tomorrow...
