Directions: Answer the following questions, showing all of your work (if needed).  If you just give the answer, you will receive no points.  Most of the questions are in your textbook.  Those that aren�t are written out.  Statements in parentheses are hints.  Please make sure you differentiate between problems, exercises, and review questions.  Type your work.  The only exception to this are the math problems in Homework 1.  I will not accept untyped, unstapled work! Each homework is worth 25 pts. 

Homework 1
1. Ch. 1, p. 14, Exercise 1.
2. Ch. 1, p. 14, Exercise 5.
3. Ch. 2, p. 31, Review Question 7.
4. Ch. 2, p. 32, Exercise 8.
5. Ch. 2, p. 33, Problem 3.
6. Ch. 3, p. 51, Exercise 9. (What is the net force on an object traveling at constant velocity?      p.43)
7. Ch. 3, p. 51, Exercise 14. (�no longer gaining speed�)
8. Ch. 3, p. 52, Problem 5. (Remember that there are four engines.)
9. Ch. 4, p. 67, Exercise 3.
10. Ch. 4, p. 67, Exercise 10.
11. Ch. 4, p. 68, Problem 1.
12. Ch. 5, p. 81, Exercise 2
13. Ch. 5, p. 82, Problem 4.
14. Ch. 6, p. 100, Exercise 7.
15. Ch. 6, p. 101, Problem 3. (The car moves three times the speed afterward.  Remember,      KE=1/2 mv2.)
16. Ch. 7, p. 115, Exercise 8. (Where is distance measured from in gravity problems?)
17. Ch. 7, p. 116, Problem 10. (Remember that an equation has an equal sign, not a wavy line.  If     you want a real answer, you must have an equal sign!)
18. Ch. 8, p. 130, Review Question 8.
19. Ch. 8, p. 132, Problem 1. (v=d/t)

Homework 2
1. Ch. 9, p. 149, Review Question 8.
2. Ch. 9, p. 149, Review Question 9.
3. Ch. 9, p. 149, Exercise 7.
4. Ch. 10, p. 167, Review Question 17.
5. Ch. 10, p. 167, Review Question 19.
6. Ch. 10, p. 167, Exercise 3. (How quickly is heat transferred in both cases?)
7. Ch. 11, p. 189, Exercise 3.
8. Ch. 11, p. 189, Exercise 7. (What part of the atom �carries� heat and electricity?)
9. Ch. 12, p. 206, Review Question 5. 
10. Ch. 12, p. 207, Exercise 2.
11. Ch. 17, p. 304, Review Question 3.
12. Ch. 17, p. 305, Exercise 3.
13. Ch. 18, p. 319, Review Question 5.
14. Ch. 18, p. 320, Exercise 3.
15. Draw both a physical and a conceptual model of the physical science classroom.

Homework 3
1. Ch. 21, p. 369, Review Question 9.
2. Ch. 21, p. 369, Review Question 11.
3. Ch. 21, p. 370, Exercise 6.  (Is biological growth physical or chemical?)
4. Ch. 22, p. 385, Review Question 2.
5. Ch. 22, p. 385, Review Question 3.
6. Ch. 23, p. 407, Review Question 7.
7. Ch. 23, p. 407, Review Question 18.
8. Ch. 23, p. 408, Review Question 29.
9. Ch. 34, p. 618, Exercise 1.
10. Ch. 34, p. 619, Exercise 7.
11. Ch. 37, p. 678, Review Question 8.
12. Ch. 37, p. 679, Exercise 1.
13. Ch. 37, p. 679, Exercise 18.
14. Ch. 38, p. 697, Review Question 10. 
15. Ch. 38, p.698, Exercise 7.

Homework 4
1. Ch. 30, p. 551, Exercise 3.
2. Ch. 30, p. 551, Exercise 5.
3. Ch. 31, p. 569, Exercise 6.
4. Explain the rock cycle using the theory of plate tectonics.  How do the two ideas interact?
5. Ch. 32, p. 582, Review Question 12.
6. Ch. 32, p. 583, Exercise 4.
7. Ch. 32, p. 583, Exercise 15.
8. Ch. 33, p. 598, Review Question 11.
9. Ch. 33, p. 599, Exercise 9.
10. Ch. 33, p. 599, Exercise 17.
11. Ch. 36, p. 656, Review Question 4.
12. Ch. 36, p. 657, Review Question 7.
13. Ch. 36, p. 658, Exercise 13.
14. Ch. 39, p. 719, Review Question 12.
15. Why is it important to understand the history of astronomy?
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