Presentation on theme: "JOURNAL QUESTION 25 Oct 2012 When you are riding in a car, how do you know that the car is accelerating (that you are going faster and faster)?"— Presentation transcript:
JOURNAL QUESTION 25 Oct 2012 When you are riding in a car, how do you know that the car is accelerating (that you are going faster and faster)?
Newton ’ s 1 st Law of Motion An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force.
JOURNAL QUESTION 26 Oct 2012, P. 41 What is the difference between mass and weight? What SI units are used to measure mass and to measure weight?
VOCABULARY Inertia – things like to keep on doing what they are already doing Force – a push or a pull Unbalanced Force – unequal force in some direction that causes an object to move Balanced Force – equal and opposite forces on an object that do not cause it to change what is it already doing
VOCABULARY Weight – mass plus the pull of gravity on an object Measured in Newtons (N) Mass – Amount of matter (stuff) in an object Measured in grams (g) Gravity– a force of attraction between 2 objects due to their masses Friction – a force between 2 surfaces in contact with each other that opposes motion
JOURNAL QUESTION 29 Oct 2012, P. 42 What are some rules that are important to follow when working with others in a group? Write down 2 other students with whom you would like to work with in creating a roller coaster.
SCIENCE NOTEBOOK Write down everything you do in your science notebook. Include all measurements, drawings, ideas, and calculations. You are responsible for keeping track of and cleaning up your materials. Each group member must contribute.
GROUP RULES Equipment Manager Pick up supplies. Make sure all is cleaned up when finished. Data Manager Make sure everyone has all information recorded in notebook Director and Communication Manager May ask the teacher questions for the group. Makes sure everyone participates and stays on task
JOURNAL QUESTION 30 Oct 2012 What information do you need to write down in your notebook in order to determine how fast the marble traveled and for someone else to be able to re- create your roller coaster?
WRITE DOWN THIS INFO! Measure length of track first. Measure height from the floor at start. Measure diameter of loop. Time the marble at least 5 times. Calculate speed in meters per second.
JOURNAL QUESTIONS 31 Oct 2012 Look at your speed calculation for your marble. On the half piece of graph paper, turned the long way, graph the average speed of your marble. You should have 5 lines, one for each of your marble runs.
AGENDA When you are finished, get a text book from the cabinet by the door. We are going to practice using the Q-notes reading technique that you learned in Panther time. Chapter 5, Section 2, Pages 124-127. Divide your next open page in half, the long way, like a hot dog.
Q-NOTES Survey the headings and write at the top, what you think the reading is about. Read the first red heading and change it into a question. Write this question on the left-hand side of your page. Read the section to answer the topic question. Look at the picture and read the caption at the bottom of the page. Describe in your own words how the picture fits the information you just read. Do this on the left-hand side.
Q-NOTES Turn the next sub-heading (blue) into a question (right side) and write the answer (left side). Continue writing questions and finding answers for the remainder of the chapter. Don’t forget the pictures and captions. Summarize at bottom what the chapter was about.
JOURNAL QUESTION 01 Nov 2012 Look at the graph you did yesterday. How far did your marble go in 1 second? What was the speed of your marble? Level 2: How far would your marble go if you let it roll for 10 seconds?
Q- NOTES Finish reading the Chapter 5, Section 2. Continue using the Q-Note technique. I will be checking your notebooks for how well you follow directions and the completeness of your answers. When you are finished, study what you wrote.
Newton ’ s 2 nd Law of Motion The acceleration of an object depends on the mass of the object and the amount of force applied.
Newton ’ s 3 rd Law of Motion Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first.