This topic contains a solution. Click here to go to the answer

Author Question: How did early man make ice? What will be an ideal response? ... (Read 86 times)

Chelseaamend

  • Hero Member
  • *****
  • Posts: 545
How did early man make ice?
 
  What will be an ideal response?

Question 2

When is it believed that ice was first artificially made for food storage?
 
  What will be an ideal response?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ms_sulzle

  • Sr. Member
  • ****
  • Posts: 320
Answer to Question 1

The ice was produced in shallow clay plates, about the size of a saucer. The water in these clay plates wept through the clay. This water dampened the small straw mats holding the clay plates in racks a few feet above the ground. The straw aided with evaporative cooling of the water. Under the right conditions a thin film of ice would form overnight on each clay plate.

Answer to Question 2

First evidence of man making ice appeared more than 3,000 years ago, about 1000 B. C.



Chelseaamend

  • Hero Member
  • *****
  • Posts: 545

ms_sulzle

  • Sr. Member
  • ****
  • Posts: 320
Always glad to help...



 

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Did you know?

Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

For a complete list of videos, visit our video library