Weathering Lab

July 6, 2013 - 2:18pm -- Denise Christine S.

N Name_________________________________Per___Date 1-16-12

                     Candy Bar Weathering                                                                                           

 

Once you have completed the activity answer the questions in complete sentences.

 

1.     Unwrap the candy and place it into your mouth, but do not chew.  Do not chew the candy bar for 2 minutes                                                                                                                              

     What is happening? Melting

 

2. Why is this happening? Saliva has enzymes which aid chemical  

    reactions and the breakdown of food plus the heat in your mouth

 

3. As the candy bar sits in your mouth does its taste change?  Yes                         

    Why? Chemical reactions

 

4. Now slowly chew the candy bar.                                                   

 

5. We are using the candy bar as a model to represent the way a rock may  

    weather. There are two types of weathering: Chemical & Mechanical  

A.   Explain how the candy bar is “CHEMICALLY WEATHERING”                          

     The enzymes are reacting with the candy bar breaking it down

   

   B. Explain how the candy bar is “MECHANICALLY  WEATHERING”                    

      Teeth and tongue are physically breaking down the candy bar

 

6. Think of the Snickers Bar as 3 different rock layers.                                         

    Chocolate- Caramel- Peanuts

A. Which layer is MOST resistant to weathering? Peanuts

B. Which Layer is LEAST resistant to weathering? Chocolate

 

7. Rocks weather at different rates. This is called Differential Weathering

  1. What are some examples of rocks resistant to weathering? Granite
  2. What are some examples of rocks NOT resistant to weathering? Sandstone
  3. Explain how knowledge about differential weathering is important to the construction industry. So as to build out of rock resistant to local environment

8. Explain how eating a candy bar is similar to a rock weathering.

 

 

 

Name_________________________________Per___Date 1-28-13

 

 

                     Candy Bar Weathering                                                                                                   

 

Answer the questions as you do the lab.

 

1.     Unwrap the candy and place it into your mouth, but do not chew.  Do not chew the candy bar for 2 minutes.  What is happening? ___________________________________________                                                                    _____________________________________________________________________

 

2. WHY is this happening? ___________________________________________________     

     _____________________________________________________________________

 

3. As the candy bar sits in your mouth does its taste change?  (Y-N)                         

    Why? _________________________________________________________________

_____________________________________________________________________

4. Now slowly chew the candy bar.                                                    

 

5. We are using the candy bar as a model to represent the way a rock may weather. What are the two types of ways rocks can be weathered? 1.________________ 2._______________

  

A.   Explain how the candy bar is “CHEMICALLY WEATHERING”. ____________________ __________________________________________________________________                         

        

    B. Explain how the candy bar is “MECHANICALLY  WEATHERING” __________________                   

        __________________________________________________________________

 

6. Think of the Snickers Bar as 3 different rock layers.  Chocolate- Caramel- Peanuts

 

A. Which layer is MOST resistant to weathering? ________________

B. Which Layer is LEAST resistant to weathering? _______________

 

7.  Different types of rocks weather at different rates.

 

a.    What are some examples of rocks resistant to weathering? ______________________

 

B.    What are some examples of rocks NOT resistant to weathering? __________________

 

C.    Why is it important to know about weathering rates if you are in the construction industry? ___________________________________________________________ ___________________________________________________________________

8. Explain how eating a candy bar is similar to a rock weathering. _____________________________________________________________________________________________________________________________________________________________________________________________________________________