Last Extra Credit for this semester

Download the instruction document below and use the links within and below. Please read all directions carefully.
DUE: JANUARY 5, 2009
I hope you find the variety of options to be fun and interesting, and that you can learn as much more about astronomy as you want!
Click here for the main instructions document.
Here is a link to the Hubble Site for additional Hubble photos and info. Please go to it! And
Here is one more link I just found to help with the assignment.

Astronomy Crossword Assignment

Use at least 15 of the following words. Extra words will be worth half a point each of extra credit.
Please write your ACROSS and DOWN clues on the back of your puzzle grid. These words all come from chapter 18 and are in the order of their appearance in the chapter.

1. parsec
2. photosphere
3. proton-proton chain
4. apparent magnitude
5. absolute magnitude
6. HR diagram
7. main sequence
8. red giant
9. white dwarf
10. nebula
11. nucleosynthesis
12. planetary nebula
13. brown dwarf
14. nova
15. supernova
16. neutron star
17. black hole
18. galaxy
19. globular cluster
20. Local Group
21. dark matter
22. Hubble's law
23. dark energy
24. Big Bang
25. cosmic microwave background (you can use only a part of this and put some of it in your clue)

Review Sheet

#4) 7 x 10^14 Hz
#5) 450 m/s
#9) the density of the medium is less than the density of air
#14) 9.55 x 10^-16 J
#15) 3.62 x 10^-14 J
#16) 16.5 m/s
#30) 343 m/s

Sonic BOOMs videos, QUIZ link is between the two videos

Link to the Waves Quiz!

Circuit Gizmo

Click here, have your exloration guide sheet ready.
Must turn in MONDAY for credit.

Ch 4 Review

Remember your sig figs ... if your answer doesn't agree w/ mine, check that first.
1. 510 W
2. 5 m
3. Work = Fd, energy=ability to do work, measured in Joules, power = work/time = J/s = watt
4. 110 kJ
5. 110 kJ
6. 8.4 J
7. 800 J
8. 6.7 x 10^11 J
9. a) 1.58x10^17 J
b) same
10. a, b, and c are 5 J
d and e are 2.5 J
f) 4.5x10^16J
11. as velocity increases, time slows down because the speed of light is constant
12. see Einstein's big idea website
13. mass becomes infinite, energy required to move the mass also becomes infinite
14. gravity = distortion in spacetime
15 and 16 - see textbook.

EINSTEIN Website link

Click here for the companion web site to the movie in class.
Especially, look at the "Theory behind the equation" article.
But also check out whatever else interests you!

Check this out...

Ultra-powerful

Answers to Power in Flowing Energy

starting with number 2...

2.
a) 1,800 J
b) 450 watts
3.
a) 60,000 J
b) 2,000 W; 2.68 hp
4.
a) 37,000 J with correct sig fig
b) 20 W with correct sig fig
5. 200 W
6.
a) 1.4 hours
b) 8,640,000 J
c) 17.3 apples
7.
a) 98,000 J
b) 98,000 W; 131 hp
8. 3.33 W

The force and motion Unit Test

is now posted! Go to www.classmarker.com

Gravity and Gizmo

Here are the answers to the gravity sheet.
1. F= 9.34 x 10^-6 N. This is basicallly the force between you and your car when you are at the door.
2. 5.28 x 10^-10 N
3. 4.42 N
4. 7.33 x 10^22 kg
5. a. 9.8 m/s/s ... it shows you how we derive "g" on Earth.
b. Acceleration due to the force of gravity of Earth
c. Earth's mass and radius
...so you have just learned how "g" was determined...
6. 1.99 x 10^20 N
7. 4848 N
8. 3.52 x 10^22 N


Now for the extra credit, have your yellow sheet handy and go here.
Must be turned in Monday. Have a great weekend!

Answers to Problems on page 45!

Since this problem set was already checked in, I'll post answers in order w/ units.

2. 5m south of east
5. in book
10. a) 37.5 m/s North b) Zero, since displacement is zero.
11. 3.0 m/s/s
12. a) -6.9 x 10^-3 m/s/s b) 4.2 m/s (needs to start slowing in plenty of time)
15. No, d= 78.4 m in 4.00 sec.
16. v=vi +gt = 0 + (9.8 m/s/s)(4.00 sec)


Hint for the Shoot the Monkey gizmo: Question number two requires you to draw a right
triangle by drawing in the opposite side and then use SOH CAH TOA (because they give you the angle) to figure out the answer...

Sig Figs/Scientific Notation answers

1c) 4
2b) 4.37 x 10^5
3c) 2.16 x 10^8
4a) 8.41
4f) 429.64
5b) 7.30 x 10^0
5e) 2.3 x 10^-8
6b) 2.1 g

Welcome to 2008-2009 Geophysical Science AC

Here is a link to the textbook site for students. It is my strong recommendation that you bookmark this site and refer to it often. Feel free to poke around with it. Basically, you select the chapter that we are currently on from the pull-down menu and then the resources for that chapter will appear.
You will note that some of these items appear on tests/quizzes in class.

Extra Credit 4th quarter

Rock cycle gizmo

Virtual Dating lab

Even more practice YAY!

Chemical Equation balancing gizmo

Ionic Bonding gizmo

DO THE ABOVE GIZMOS TO PREPARE FOR THE NEXT TEST

Electron configuration

Don't forget to log in first.

Electron config. practice

RADIOACTIVITY GIZMO

For more extra credit:  do this gizmo.  

Don't forget to log in first!

Problem Set 3 - Phase change / Gas Laws

Random Order - quantitative probs only

NOTE: units for number 3 and 4 are kilocalories (kcal) .  Also, number 8 asks for calories and joules.  Only one part of number 8 is given below.

2.5

5000

27

630,000

32.5

6

1.80

2

270

300

.082

28.9

57.7

 

Don't forget that if you print out the Exploration Guide to the two gizmos we did in class, and do it, you can turn it in for extra credit points.

Heat Problems

In random order this time...

1.98
-40
70
3
10.30
46
93.4
22
50
252
298

Freezing rain advisory for tomorrow...

Final Exam review

www.classmarker.com