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 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 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's dad stands still while he thinks about what is on the grocery list.
This DOES 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.
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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 which examples show an energy transfer to an object, we need to understand what an energy transfer is. Energy transfer refers to the transfer of energy from one object or system to another. In this case, we are looking for examples where there is a transfer of energy to an object.
Let's go through each example:
1. Sandra sees a new kind of breakfast pastry sitting on a high shelf.
This example does not involve any energy transfer to an object. Sandra merely observes the pastry, but there is no energy being transferred to the pastry.
2. Sandra's dad pushes the grocery cart to make it start moving.
This example does involve an energy transfer to an object. Sandra's dad applies force to the grocery cart, which causes it to start moving. In this case, the energy from his push is transferred to the cart.
3. Sandra slides a gallon of milk out of the way to get a colder gallon from the back of the shelf.
This example also involves an energy transfer to an object. Sandra's action of sliding the gallon of milk requires her to exert force, which transfers energy to the milk as it moves out of the way.
4. Sandra's dad stands still while he thinks about what is on the grocery list.
This example does not involve any energy transfer to an object. Sandra's dad is simply standing still and thinking, which does not result in any energy being transferred to an object.
Based on the explanations above, the correct options that show an energy transfer to an object are:
- 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.
Therefore, the correct answer is:
- This DOES 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 slides a gallon of milk out of the way to get a colder gallon from the back of the shelf.