Journal – 8-9-2010

1. Journal – 8-9-2010 Focused Free Write – Write everything you can think of about forces and motion and earth’s history.

2. Journal – 8-10-2010 Compare and Contrast speed and velocity.

3. Journal – 8-11-2010 Describe the advantages and disadvantages of racing.

4. Journal – 8-12-2010 • Identify what 2 things you need to know in order to calculate an object’s speed. • Explain how you can predict where an object might be using what you know about speed.

5. Journal – 8-13-2010 • Describe the motion and speed on the following graph. Object A Object B

6. Journal – 8-16-2010 • Calculate Average Time & Speed • Graph Speed • Draw conclusions about the graph

7. Answers to Journal 8-16-2010

8. Journal – 8-17-2010 • Give an example of speed. • Give an example of momentum. • How do you calculate momentum.

9. Journal 8-18-2010 • Identify the following measurements as speed, velocity, or momentum • 88 km/h • 18 kg * m/s down hill • 10 m/s straight up • 19 m/s to the west • Explain why knowing the velocity of an airplane is more important to a traveler than knowing only the airplane’s speed.

10. Journal – 8-19-2010 • Describe the motion of a ball in a typical sport. Identify times when the ball moves with a constant velocity and times when its velocity changes. • Illustrate a picture that represents balanced forces and a picture that represents unbalanced forces.

11. Journal – 8/20/2010 • Identify a situation involving unbalanced forces. Describe net force, and explain how it affects the motion of an object. • Evaluate the following situations, and decide if an unbalanced force is present. • A car turns right without slowing down. • A spacecraft moves in one direction at a constant speed. • A cyclist coasts downhill, going faster and faster. • A tennis racket hits a tennis ball.

12. Journal – 8-23-2010 • Arrange the following pairs in order of most friction to least friction • A shoe sole and a waxed basketball court • A shoe sole and the frozen surface of a lake • A shoe sole and the sidewalk

13. Journal – 8-24-2010 • Define gravity • State Newton’s Three Laws of Motion – give an example of each.

14. Journal – 8-25-2010 • Remember acceleration is the change in velocity. To calculate acceleration you subtract beginning velocity from ending velocity and then divide that by period of time. • So, calculate the following: • What is the acceleration of a car that starts from rest (0 m/s) and moves straight ahead at 18 m/s in 12 s?

15. Journal – 8-26-2010 Compare and Contrast mass and weight. Define free fall.

16. Journal – 8-27 -2010 Note – THERE WILL BE A QUIZ TUESDAY, AUGUST 31, 2010 • Identify the action and reaction forces in each of the following • Your hand pushing against a wall • A hammer pounding a nail • A stone striking the bottom of a well • A book sliding to a stop on the ground

17. Journal – 8-30-2010 • Open your book to page 275 • Begin working on the chapter review • Be sure to complete all of the following: • #1 thru #9 • #11, 13 • #15, 17, 18, 20, 23, 26

18. Journal – 8/31/2010 • Using what you know about forces and motion, explain how the universe was formed.

19. Journal – 9/1/2010 • Describe the basic structure of the universe. • Describe a light year.

20. Journal – 9/2/2010 • Describe the main features of the Milky Way galaxy, and include the location of our solar system. • List the three main types of galaxies.

21. Journal – 9/3/2010 • Identify 4 different machines you use everyday. • Describe how the machines you listed above help you.

22. Journal – 9/7/2010 • What scientific evidence do we have that suggest that the big bang theory might be true?

23. Journal – 9/8/2010 • What is the difference between simple and compound machines? • You will have 15-20 minutes on Friday to discuss your Rube Goldberg Project with a partner (s).

24. Journal – 9/9/2010 • How do you think the layers of the Earth look? - draw a picture or describe (Be sure to label parts of your picture) • You will have 15-20 minutes on Friday to discuss your Rube Goldberg Project with a partner (s).

25. Journal 9/10/2010 • Illustrate and describe the motion of one of the three different types of plate boundaries.

26. Journal – 9/13/2010 • Draw an outline of the continents • Predict where the tectonic plates might be by outlining them on your map.

27. Journal – 9/14/2010 • Why is it important to study plate tectonics?

28. Journal – 9/15/2010 • Explain what causes earthquakes and volcanoes. What forces are involved? • Describe where earthquakes and volcanoes occur.

29. Journal – 9/16/2010 • Describe how Kentucky might change if we were to experience a major earthquake along the New Madrid fault line.

30. Journal – 9/17/2010 • Today’s journal is to be turned on a separate piece of paper. Due by the end of the class period. Scored on following directions, neatness, complete sentences, letter format, proper grammar. • Write a letter to someone explaining what you are learning about forces and motion and how forces and motion affect your everyday life as well as how forces and motion has a major impact on the Earth we live. • Note: On Friday, September 24 you will have 20-25 minutes to work on your Rube Goldberg Project. I would like to have a hand drawn design and a list of who’s doing what by the end of the class period.

31. Journal – 9/20/2010 • Describe the types of waves generated by an earthquake. • Note: On Friday, September 24 you will have 20-25 minutes to work on your Rube Goldberg Project. I would like to have a hand drawn design and a list of who’s doing what by the end of the class period.

32. Note: On Friday, September 24 you will have 20-25 minutes to work on your Rube Goldberg Project. I would like to have a hand drawn design and a list of who’s doing what by the end of the class period. Journal – 9/23/2010 • Earthquakes can be measured by magnitude or intensity. The magnitude is a quantitative measurement of an earthquake’s strength. The intensity is a qualitative measurement on a particular area. Based on you virtual lab, describe what possible damage your earthquake might cause. Use the Richter scale on page 571 in your book to help describe the possible destruction.

33. Journal – 9-24-2010 • Make a list of all the vocabulary words that we have study and used about force and motion, Earth’s history, and plate tectonics. • Now try a triangle similar to the one illustrated on the board. Fill in each square with a vocabulary word of your choice.

34. Sept. 24, 2010 – Rube Goldberg Work Day • By the end of the class period • Please turn in a preliminary design of your machine. • Include arrows indicating direction of motion. • Include labels of machines being used.

35. Journal – 9/27/2010 • Describe the three basic rocks and how they form.

36. Journal – 9/29/2010 • Compare/Contrast relative age and absolute age.

37. Journal – 9/30/2010 1. Illustrate several layers of earth and one of the three types of plate boundaries. 2. Using the Principal of Superposition, label which layer is the oldest to the youngest. • Challenge yourself to included faults, intrusive and extrusive igneous rock in your drawings.

38. Journal – 10/11/10 • Describe the landscape in the area where you live. • Explain how has this area changed in appearance throughout your life?

39. Journal – 10/12/10 • Identify the following as chemical, physical weathering or erosion. 1. Rock changes color as it oxidizes 2. Rock shatters as it freezes 3. Wind erodes the sides of the Egyptian Pyramids 4. An underground cavern is formed as water drips in from the Earth’s surface.

40. Journal – 10/19/2010 • Determine if work is being done on the following three situations: • 1. lifting a spoon full of soup to your mouth • 2. holding a stack of books motionless over your head • 3. letting a pencil fall to the ground

41. Journal – 10/20/10 • Illustrate a ramp that has a box being pushed up it. • Describe how a ramp can make lifting a box easier without changing the amount of work being done.

42. Journal – 10/21/2010 • Compile (Collect) 6 sets of data from at least 6 other people about how much work and power they used in walking and running up the stairs from yesterday’s lab. After collecting your data, write a paragraph about what conclusions you come to about the amount of work and power used in climbing the football bleachers.

43. Journal – 10/25/10 • A mechanic uses a hydraulic lift to raise a 1200 kg car 0.5 m off the ground. How much work does the lift do on the car?

44. Journal – 10/26/2010 • Describe mechanical advantage.

45. Mechanical Advantage • Mechanical advantage describes how a machine can increase the amount of force or the distance.

46. Journal – 10/27/2010 • Illustrate a door and its hinge. • Using the principle of a lever, explain why it is easier to open a door by pushing near the knob than by pushing near the hinges. What class of lever is a door?

47. Journal 11-03-10 • Identify the following as power, force, or work. • 20 N 2. 300 J 3. 60 W • Calculate how much power is used if a force of 10 newtons is used to push a cart a distance of 8 meters in 4 seconds.

48. Journal – 11/4/10 1. A sailor uses a rope and pulley to raise a sail weighing 140 N. The sailor pulls down with a force of 140 N on the rope. What is the mechanical advantage of the pulley? 2. Alex pulls on the handle of a claw hammer with a force of 15 N. If the hammer has a mechanical advantage of 5.2, how much force is exerted on a nail in the claw?

49. Journal – 11/5/2010 • Define potential energy AND kinetic energy. • List 5 types of energy we use everyday.

50. Journal – 11/8/2010 • Focus Free Write • Do on a separate piece of paper to be turned in. • Write everything you can about forces and motion, and energy. If you get stuck on an idea rewrite the last thing you wrote until a new idea comes. Do not stop writing until time is up.