To evaluate Ms. Smith's activities in terms of energy transfer, we can consider whether any action involves energy being transferred from one object to another. Here’s an analysis of each activity:
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Ms. Smith throws a piece of trash into the trash can.
- This DOES show an energy transfer to an object. (Energy is transferred to the trash as it is given kinetic energy from the throw.)
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Ms. Smith pushes her markers out of the way so she can put her papers on the table.
- This DOES show an energy transfer to an object. (The markers are being pushed, which involves the application of force and energy from Ms. Smith's hand.)
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Ms. Smith picks up a book, drops it, and allows it to hit the floor.
- This DOES show an energy transfer to an object. (When the book is dropped, gravitational potential energy is converted into kinetic energy as it falls, and the energy is transferred to the floor upon impact.)
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Ms. Smith waits patiently while her students settle into their seats.
- This does NOT show an energy transfer to an object. (Waiting does not involve the application of energy to move or affect any physical object.)
In summary:
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Shows energy transfer:
- Throwing trash into the trash can.
- Pushing markers out of the way.
- Picking up a book and dropping it.
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Does NOT show energy transfer:
- Waiting patiently for students.
Therefore, the activities showing energy transfer are the first three.
3 answers