Physics 1401

If you complete all of the practice quizzes during the semester, you may replace your lowest two in-class quizzes with the highest average of all your online quizzes. Since you may take the online quizzes as often as you like, your highest average should be pretty good. However, in order to keep track, you must fill out the student name and id# part of the form.

Question 1. When air is rapidly compressed, the temperature of the air

(a) increases

(b) decreases

(c) remains the same

 

 

Question 2. When heated (even a little), most metals

(a) explode

(b) melt

(c) shrink

(d) expand

(e) scream

 

 

Question 3. The precise temperature at the bottom of Lake Superior at 12:01 a.m. on October 31, 1894 (in °C) was

(a) 0

(b) 1

(c) 2

(d) 3

(e) 4

 

 

Question 4. True or false. When a red-hot piece of iron is put into an insulated bucket of cool water, the decrease in the temperature of the iron must be equal to the increase in the temperature of the water and bucket.

(a) true

(b) false

 

 

Question 5. True or false. When a red-hot piece of iron is put into an insulated bucket of cool water, the heat lost by the iron is gained by the water and bucket.

(a) true

(b) false

 

 

Question 6. The final temperature (in °C) of a mixture of 50 g of water at 20 °C and 50 g of water at 40 °C is

(a) 20

(b) 25

(c) 30

(d) 35

(e) 40

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