Force and Energy

 Definitions of Energy (4-PS3-1 & 4-PS3-3)

  • Energy can be moved from place to place by moving objects or through sound, light, or electric currents.Objects have more energy when they are moving faster.


 Conservation of Energy and Energy Transfer (4-PS3-3)
  • Energy is present whenever there are moving objects, sound, light, or heat. When objects collide, energy can be transferred from one object to another, thereby changing their motion. In such collisions, some energy is typically also transferred to the surrounding air; as a result, the air gets heated and sound is produced.

Energy can be transferred in various ways & between objects. 


PS3.C: Relationship Between Energy and Forces (4-PS3-3)
  • When objects collide, the contact forces transfer energy so as to change the object's’ motions/ direction


·  


Crash Course!

 

A group of friends are going sledding!  There are 2 hills at the park.  One is called the Bunny Hill. The other hill is called Adventure Hill!

 

Leo has a habit of crashing into his friends. There is a lot of energy moving in this system.  Think about the collisions in this system and how energy is moving.

 

What questions do you have about this system that would help you understand how the energy causes different actions on the two hills?

 

_________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________                                                                                                                                                                      


Change the models on the next page to:

·  Show what will happen to Nate and Mia when Leo collides with them.   Do this for each hill.

·  Add labels to show how energy is transferred during the collision.


Use the lines below to explain why Nate and Mia’s sleds moved differently after the collision on the Bunny Hill and on Adventure Hill.

                                                                                                                                                                                                                                                                                                                                               


Name________________________________


Bunny Hill



                                                    


Adventure Hill

 

 

 

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