Final answer:
The activities described, which involve peas in a straw and modeling clay with a cylinder setup, are practical experiments related to the subject of physics, demonstrating principles like action and reaction, and balance using levers.
Step-by-step explanation:
The student is likely engaging in a physics experiment that involves understanding principles such as motion, force, and equilibrium. The various steps provided seem to relate to different experiments or demonstrations that can serve as practical illustrations of physics concepts such as Newton's laws of motion, force distribution, and action-reaction principles.
For instance, using peas in a straw to demonstrate action and reaction, or using a modeling clay and cylinder setup to explore the concept of balance and levers falls within the realm of physics. Students are attempting to manipulate objects and observe outcomes that reflect the fundamental laws governing physical interactions.
The inclusion of items such as marbles, peas, and pennies suggests that the experiments are designed to be hands-on and visually demonstrate how physical principles play out in a controlled scenario. Furthermore, these activities could be part of a lab segment in a physics class, aimed at enhancing the students’ understanding through practical experience.