Sandra and her dad go to the grocery story. As they do their shopping, Sandra's dad asks her about her homework. Sandra remembers that she is supposed to make a list of "real world" examples of energy transfer.
Which of the following could be included on a list of examples showing an energy transfer to an object?
(4 points)
This DOES show an energy transfer to an object. This does NOT show an energy transfer to an object.
Sandra's dad pushes the grocery cart to make it start moving.
This DOES show an energy transfer to an object. – Sandra's dad pushes the grocery cart to make it start moving.
This does NOT show an energy transfer to an object. – Sandra's dad pushes the grocery cart to make it start moving.
Sandra slides a gallon of milk out of the way to get a colder gallon from the back of the shelf.
This DOES show an energy transfer to an object. – Sandra slides a gallon of milk out of the way to get a colder gallon from the back of the shelf.
This does NOT show an energy transfer to an object. – Sandra slides a gallon of milk out of the way to get a colder gallon from the back of the shelf.
Sandra sees a new kind of breakfast pastry sitting on a high shelf.
This DOES show an energy transfer to an object. – Sandra sees a new kind of breakfast pastry sitting on a high shelf.
This does NOT show an energy transfer to an object. – Sandra sees a new kind of breakfast pastry sitting on a high shelf.
Sandra's dad stands still while he thinks about what is on the grocery list. Thx
This does NOT show an energy transfer to an object. - Sandra's dad stands still while he thinks about what is on the grocery list.
This does NOT show an energy transfer to an object. – Sandra's dad stands still while he thinks about what is on the grocery list.
This does NOT show an energy transfer to an object. - Sandra's dad stands still while he thinks about what is on the grocery list.
To determine whether an activity shows an energy transfer to an object, we need to understand what energy transfer means. Energy transfer refers to the process of energy moving from one object or system to another. In the context of the examples given, energy transfer would involve the transfer of energy to an object, resulting in some observable change or effect on that object.
Analyzing the examples provided:
1. Sandra's dad pushes the grocery cart to make it start moving.
- This DOES show an energy transfer to an object. When Sandra's dad pushes the grocery cart, he is transferring energy to the cart, causing it to start moving.
2. Sandra slides a gallon of milk out of the way to get a colder gallon from the back of the shelf.
- This DOES show an energy transfer to an object. When Sandra slides the gallon of milk, she is transferring energy to it as she exerts force on it to move it.
3. Sandra sees a new kind of breakfast pastry sitting on a high shelf.
- This does NOT show an energy transfer to an object. Merely seeing an object does not involve a transfer of energy to that object.
4. Sandra's dad stands still while he thinks about what is on the grocery list.
- This does NOT show an energy transfer to an object. Standing still and thinking does not involve a transfer of energy to an object.
Therefore, the correct options are:
- Sandra's dad pushes the grocery cart to make it start moving. (DOES show an energy transfer to an object)
- Sandra slides a gallon of milk out of the way to get a colder gallon from the back of the shelf. (DOES show an energy transfer to an object)