Name_____________________________________Block___________Date_____________ WORKSHEET
MICROBES
AND YOUR FOOD WEB ACTIVITY
*Smells good, looks
good, tastes good…how do you know if it is safe to eat?
You are going to making
pickles today! Before you make them, you need to understand what fermentation
is. Go to: http://www.exploratorium.edu/cooking/pickles/fermentation.html.
1) Describe how
fermenting food relates to “good” microbes and “bad” microbes.
2) List foods/drinks that
have experienced fermentation.
Go to: http://www.exploratorium.edu/cooking/pickles/salt.html
3) Draw and describe your
drawing of how OSMOSIS works to help with the “The Crunch Factor!”
4) How much oxygen should
be in your pickle jar before you make your pickles? Why?
Go to: http://www.exploratorium.edu/cooking/pickles/index.html
and click on pickle challenge
Fill
in the data table below:
|
Batch |
How much salt (1/4,
1/2, 3/4 or 1 cup?) |
Temperature, Degrees F |
Describe Results – 2
adjectives |
|
The perfect pickle!! |
|
|
|
|
A bacteria-infested
pickle! |
|
|
|
|
Another perfect pickle!! |
|
|
|
|
A pickle that just isn’t
really a pickle! |
|
|
|
|
Another
bacteria-infested pickle!! |
|
|
|
|
Another pickle that just
isn’t really a pickle! |
|
|
|
Go
to: The Center for Disease Control and Prevention: http://www.cdc.gov/ncidod/dbmd/diseaseinfo/foodirradiation.htm
Click
on “What is food irradiation?”
6)
List 2 benefits of irradiation.
Scroll
back up to the top of the page. Click on “Which foods can be irradiated?”
7)
List 5 foods that can be!
Scroll
up to the top and click on “How does irradiation affect disease-causing
microbes?”
8)
Only read the 1st paragraph and in your own words, describe
why microbes DISLIKE irradiation.
9)
Scroll back to the top of the page and click on “How can I tell if the food has
been irradiated?” How would you know??
http://www.abc.net.au/science/lcs/food.htm:
Enjoy the
virtual kitchen and fill in this sheet as you go.
|
Item in kitchen |
Fact your learned from
clicking on it J |
|
backpack |
|
|
refrigerator |
|
|
freezer |
|
|
microwave |
|
|
person |
|
|
sink |
|
|
oven |
|
|
meat on counter |
|
|
thermometer |
|
|
grocery bag |
|
Done early? See me!