Teaching Set. Physic for class 10 Semester / Arranged by TEAM OF PHYSICS TEACHERS

Transcription

1 Teaching Set Physic for class 10 Semester / Annual Program 2. Semester Program 3. Lasson Plan 4. The minimum Passing Score Arranged by TEAM OF PHYSICS TEACHERS SMA NEGERI 5 KOTA BEKASI Jl. Gamprit Jatiwaringin Asri Pondok Gede Bekasi Telp Fax

2 LESSON PLAN 1 School : 5 Senior High School Bekasi Subject : Physics Year/semester : 10/1 Duration : 6x45 minutes Numbers of meeting : 3 Standard of competence: 1. Apply the concept of physic quantities and measurement Basic competence: 1.1 Measure physics quantities (mass,length and time) Indicators: Use some instruments to measure the length, mass and time Read the measurement result by instrument according to significant figures Define the significant figures Objectives By the end of the lesson, students should be able to: 1. Show an understanding that all physical quantities consist of a numerical magnitude and a unit. 2. Recall the following base quantities and their units: mass (kg), length (m), time (s), current (A), temperature (K), amount of substance (mol). 3. Use prefixes like nano (n), micro (µ), milli (m), centi (c), deci (d), kilo (k), mega (M), to indicate decimal sub-multiples and multiples of the SI units. 4. Measure the mass, length and time 5. Find the dimension of some physical quantities 6. Use the rule of significant figure Fundamental lesson Quantity is something can be measured and expressed in values. Quantity can be distinguished into basic quantities and derived quantities. Unit is the standard comparison in measuring activity. Num. Physical The units used quantities MKS CGS FPS 1 Length Meter Centimeter Feet 2 Mass Kilogram Gram Pound 3 Time Second Second Second

3 3.Prefixes are commonly used to express smaller or larger quantities. Symbol Prefix Factor Symbol Prefix Factor n nano 10-9 d µ micro 10-6 K Kilo 10 3 m mili 10-3 M Mega 10 6 c centi 10-2 G Giga 10 9 Dimension is the symbol to show how a quantity is arranged from basic quantity Dimension of Basic quantities: M, L, T, I, J, N and Ө Dimension of Derivative quantities Steps: 1. Find the formula 2. Find the units (basic quantity) 3. Find the dimension Example: Find the dimension of force 1. the formula : F = m.a 2. the units : = kg. m/s 2 3. the dimension : = M. L/T 2 Scientific notation is the way to write smaller and larger number. a x 10 n, with 1 a 10 and n is the integer Example: = 3.6 x = 7.68 x 10 7 Significant number is the number that gets from measurement. The rules 1. All figures (but zero) are significant number Example: gram (4 significant number) 45.7 cm (3 significant number) 2. All zeros lie between non-zero figures are significant number Example: m (5 significant number) Kg (4 significant number) 3. All zeros number at the right hand side of nnon-zero figure are significant number, unless there is a special explanation with underlined Example: 5280 cm (4 significant number) 5280 cm (3 significant number) 4. All zeros used to determine the position of the decimal point are not significant number Example: mm (2 significant number) gr (3 significant number)

4 The mathematical operation of significant numbers 1. Addition and subtraction Example: = = Multiplication and division Example: 796 x 320 = x 0.8 = : 0.7 = Power and roots Example: = = = 13.0 Teaching methods Experiment Discussion Problem solving Procedures 1. First Meeting ( 2 x 45 minutes) a. Pre-activities (15 minutes) Introduce myself and communicate my expectations: - in routines and habits during lesson, - in work procedures, - quality and quantity of work, - behaviour in the classroom. Recall the basic principle such as what is Physics and what physics a for. b. Main activities (65 minutes) Teacher shows understanding that all physical quantities consist of a numerical magnitude and a unit Recall base quantities, their units, their dimension and their measuring tools Recall base quantities and derived quantities Ask the the student to find the commonly prefixes in SI unit use prefixes and their symbols to indicate decimal sub-multiples and multiples of the SI units Read the scale on the calipers and micrometer helped by multimedia

5 c. (10 minutes) Conclude the lesson about quantities and their units Review how to read measuring result and least count of calipers and micrometer Teacher give homework from textbook page 15 number Second meeting a. Pre-activities (10 minutes) Recall quantities and their units Discuss the homework for difficult questions Divide the students into 8 groups b. Main activities (70 minutes) Teacher describes how to measure a variety of lengths with appropriate accuracy by means of tapes, rules, micrometers and calipers, using a vernier scale as necessary Student use measuring tools for some quantities in a group Every group has their own tools Students do the activity based on the procedures in student worksheet After 15 minutes, they have to explain what they do to their friends in front of the class. c. (10 minutes) Conclude the lesson by mention the measuring tools and the functions review how to find the least count of some measuring tool 3. Third Meeting a. Pre-activities (5 minutes) Recall base quantities and derived quantities Recall measuring tools, how to find the zero error and the least count of some measuring tool b. Main activities (75 minutes) Student search the information about the dimension of base quantities from textbook Teacher give an example how to find out the dimensions of derived quantities show an understanding of the orders of magnitude of the sizes of common objects ranging from a typical atom to the Earth Discuss the scientific notation to appear small quantity and large quantity Distinguish between calculating and measuring result Understanding the meaning of significant figure in order to communicate the data and find the accuracy in measuring. Student apply the concepts to solve the problem in students workbook page 19.

6 c. (10 minutes) Recall the dimension of base quantities and some derived quantities Recall the rule of significant notation Recall the rules of significant number Evaluation 1. Write the measuring result based on these pictures. (complete with the units) Calipers *Main scale: = *Vernier:. x0.01= *result = Micrometer *Main scale:. = *Rotor scale:... x0.01= *result = Main scale:. = *Rotor scale:... x0.01= *result = 2. Find the dimensional of Potential energy (Ep = mass x gravitational acceleration x height). a. Formula: b. Units:. c. Dimensional:. 3. What is the area of plate with size x ? (According to significant figures)..

7 Student Worksheet Quantity and Unit (first meeting) Quantity is something can be measured and expressed in values. Quantity can be distinguished into basic quantities and derived quantities. 1. Basic quantity is: Ex: 2. Derived quantities is: Ex: Unit is the standard comparison in measuring activity. 3. Fill the table below Physical The units used Num. quantities MKS CGS FPS 1 Length 2 Mass 3 Time 4. Fill the table below Num. Measuring tools (one or more than one) Quantity measured Dimension International System of Unit Smalest scale value 1. Length 2. Mass 3. Time 4. Temperature Amount of substance Electric current Light Intensity

8 2. Write some measuring tools to measure derivative quantities. a. b. c. 3. Prefixes are commonly used to express smaller or larger quantities. Complete the table below with some commonly used SI prefixes. Symbol Prefix Factor Symbol Prefix Factor n nano d 10-1 µ micro Kilo 10 3 m 10-3 Mega 10 6 c 10-2 Giga 10 9 Measurement(second meeting) 1. Vernier Callipers Purpose: to measure the length of cube Materials: wooden cube Measuring Calculating Num Length Zerro error: 1. Least Count: 2. Average length: 3. True length: 2. Micrometer screw Purpose: to measure the diameter of marble Materials: marble Measuring Calculating Num Diameter Zerro error: 1. Least Count: 2. Average Diameter: 3. True Diameter: 3. Balance Purpose: to measure the mass of alumunium block Materials: alumunium block Measuring Calculating Num Mass Zerro error: 1. Least Count: 2. Average Mass: 3. True Mass: 4. Stopwatch Purpose: to measure the time of 20 beats of your heart Measuring Calculating Num Time Zerro error: 1. Least Count: 2. Average Time: 3. True Time:

9 5. Amperemeter Purpose: to measure the electric current Materials: resistor and battery Measuring Calculating Num Electric Current Zerro error: 1. Least Count: 2. Average result: 3. True result: 6. Thermometer Purpose: to measure the temperature of cold drink Materials: cold water Measuring Calculating Num Temperature Zerro error: 1. Least Count: 2. Average result: 3. True result: 7. Spring Balance Purpose: to measure the weight of alumunium cube Materials: alumunium cube Measuring Calculating Num Weight Zerro error: 1. Least Count: 2. Average result: 3. True result: 8. Volume Purpose: to measure the volume of stone Materials: stone Measuring Calculating Num Volume Zerro error: 1. Least Count: 2. Average result: 3. True result:

10 LESSON PLAN 2 School : 5 Senior High School Bekasi Subject : Physics Year/semester : 10/1 Duration : 6x45 minutes Numbers of meeting : 3 Standard of competence: 1. Apply the concept of physic quantities and its measurement Basic competence: 1.2 Calculate the resultant of vector addition Indicators: * Add the vectors with graphic method * Add the vectors with cosine methods * Add the vectors with polygon and analytic method Objectives Can add two or more vectors using the appropriate method to solve physic problem Fundamental lesson Vector addition Teaching methods *Experiment *Discussion *Problem solving Procedures 1. First Meeting *the differences between scalar and vector quantities *the trigonometric functions Main activities *Teacher is explaining the methods to find the resultant of vectors *Practice to find the resultant of vectors with polygon and analytic methods in a group *Find the component of vector using trigonometric functions *Conclude the lesson about the vector addition s methods *Prove that the result by polygon and analytic method are the same

11 2. Second meeting *the trigonometric functions of specific angles Main activities *Practice to find the vector sum use appropriate method *Apply the methods in physics problems *conclude the lesson about the differences between scalar and vector quantities *The students mention the vector addition s methods *The teacher gives the homework 3. Third Meeting Evaluation about vector addition. 1. Find the vector resultant of these vectors. R = Tan = Forces X axis Y axis Quadrant = Conversion = Sum 2. An air plane flies 40 km in direction 60 to the north from east, and then turns to the east 10 km. Then it turns to the north Draw and find the resultant of the displacement (magnitude&direction)! 3. a. Find the resultant of these vectors using the appropriate method b. Draw the third vector that can make the resultant is zero (that vector has same magnitude but has opposite direction with the resultant)

12 LESSON PLAN 3 School : 5 Senior High School Bekasi Subject : Physics Year/semester : 10/1 Duration : 8x45 minutes Numbers of meeting : 4 Standard of competence: 2. Apply the kinematics and dynamic concepts of a particle Basic competence: Analyze physics quantities in rectilinear motion both of no acceleration & constant acceleration Indicators: *Identify physic quantities of rectilinear motion *Analyze physic quantities of rectilinear motion with no acceleration * Analyze physic quantities of rectilinear motion with constant acceleration *Analyze the graphic of rectilinear motion with no acceleration and constant acceleration Objectives Can define and apply the concepts of kinematics and dynamic concepts of an object in physics problems Fundamental lesson Rectilinear motion with no acceleration and constant acceleration Teaching methods *Experiment *Discussion *Problem solving Procedures 1. First Meeting *make the concepts map about motion from simple example of motion in surrounding s life Main activities *find out the differences between distance and displacement *find out the differences between speed and velocity *find out the differences between average velocity and instantaneous velocity *Conclude the lesson about physics quantities in rectilinear motion * The teacher gives the homework

13 2. Second meeting * The concepts map about motion from simple example of motion in surrounding s life Main activities *Observe the motion to distinguish between motion with no acceleration& with constant acceleration *Practical to find the acceleration of motion in inclined plane *make the graphic of with no acceleration& with constant acceleration based on the experimental result *discuss the experimental result *collect the practical report *conclude the lesson about motion with no acceleration& with constant acceleration 3. Third Meeting *Able to make graphic *Able to interpret data from graphic Main activities *Analyze the graphic from experimental result *Find the intersection in graphic velocity to times *Apply the new concept in another physics problems *conclude the lesson about how to interpret data from graphic of rectilinear motion 4. Fourth Meeting Evaluation about rectilinear motion with no acceleration & with constant acceleration 1. A car moves from town A to town B along the path as the graph beside. Calculate the: Town A A. distance and displacement B. speed and velocity 25 km, in 20 minutes 2. An object falls from rest for 3 s. a. How fast is it traveling at the end of the time? b. How far does it fall in this time? 50 km, in 30 minutes Town B

14 3. Plot the following data. s(m) t(s) a. What is the average velocity over the 10 s? b. What is the average velocity in the first 3 s? c. What is the acceleration in the firsts 4 s? LESSON PLAN 4 School : 5 Senior High School Bekasi Subject : Physics Year/semester : 10/1 Duration : 8x45 minutes Numbers of meeting : 4 Standard of competence: 2. Apply the kinematics and dynamic concepts of a particle Basic competence: 2.2 Analyze physics quantities in circular motion with constant speed Indicators: *Identify the frequency, period, and angular displacement in circular motion with constant speed *Analyze physics quantities & its relationship between rectilinear motion & circular motion with constant speed * Apply the physics quantities in joining wheels system Objectives Can define and apply the concepts of kinematics in circular motion Fundamental lesson Circular motion Teaching methods *Discussion *Problem solving Procedures 1. First Meeting *the quantities in rectilinear motion. *the definition of frequency and periods

15 Main activities *Mention the examples of circular motion * Make the concept map of circular motion division *convert degrees into radian units *find out the definition of angular velocity, angular displacement, frequency and periods in circular motion. *Find the relationship between the quantities in rectilinear and circular motion *conclude the lesson about the quantities in circular motion *The teacher gives the homework 2. Second meeting *the formula of rectilinear motion both no acceleration and constant acceleration. Main activities *Mention the examples of circular motion * Make the concept map of circular motion division *Find out the differences between circular motion with no acceleration and constant acceleration *Find the formula of centripetal acceleration *conclude the lesson about motion with no acceleration& with constant acceleration 3. Third Meeting *Able to measure the angular velocity, periods and frequency Main activities *Find out the relationship between 2 wheels system, helped by educational software *Find the formula in every types of joining wheels system *Apply the new concept in another physics problems *conclude the lesson about the formula in every types of joining wheels system *teacher gives group task to find the article from internet about applications of joining wheels system in industrial world

16 4. Fourth Meeting Evaluation about circular motion with constant speed 1. An angle is subtended at the center of a circle of radius 5 m by an arc of 1.6 m. How many radians are there in this angle? 2. The earth orbits the sun with a radius of 150 million km once every 365¼ days. What is the angular velocity of the earth? (rad/s).what is the linear velocity in m/s? What is the centripetal acceleration in m/s? 3. A boy rides the bicycle with constant speed. The wheels have radius of 35 cm. If the wheels has linear velocity of 20 m/s? How far does the boy has moved? 4. Two wheels are connected by a chain as the figure below. Wheel A has angular velocity of 45 rad/s. The radius of wheel A and wheel B are 50 cm and 75 cm. What is the angular velocity of wheel B? A B LESSON PLAN 5 School : 5 Senior High School Bekasi Subject : Physics Year/semester : 10/1 Duration : 8x45 minutes Numbers of meeting : 4 Standard of competence: 2. Apply the kinematics and dynamic concepts of a particle Basic competence: 2.3 Apply the Newton's law as the principal in dynamic motion both rectilinear & circular with no acceleration Indicators: *Identify the application Newton's law of motion in daily activities *Apply the Newton's law without friction on inclined plane *Investigate the characteristics of static and kinetics friction *Apply the Newton's law in vertical and circular motion

17 Objectives: Can define and apply the Newton's law as the principal in dynamic motion both rectilinear & circular with no acceleration Fundamental lesson: Newton's law of motion and frictional force Teaching methods *Experiment *Discussion *Problem solving Procedures 1. First Meeting *the vector addition s methods *the definition of forces and types of forces Main activities * Explain the Newton s law of motion *Analyze the examples of body system with Newton s law of motion *Sketch the forces diagram of many system *Explain the agreement about vector direction in motion based on Newton s law of motion *conclude the lesson about Newton s law of motion * The teacher gives the homework 2. Second meeting *Able to find the component of vector *The types of forces *The advantages and disadvantages of frictional forces Main activities *Explain Newton s second law of motion with demonstration of motion on inclined plane *Practical to find the characteristic of static and kinetic friction forces *Find the factors that effect the frictional forces *Record data and make interpretation *discuss the experimental result *conclude the lesson about frictional force *collect the practical report 3. Third Meeting * The quantities in circular motion * Understanding Newton s law of motion in rectilinear motion

18 Main activities *Analyze the phenomena of some circular motion *Find the formula of Newton s law in circular motion *Apply the new concept in another physics problems *Conclude the lesson about Newton s law in circular motion *Teacher gives homework 4. Fourth Meeting Evaluation about Newton's law as the principal in dynamic motion both rectilinear & circular with no acceleration 1. Three forces acting through a point hold a body in a state of equilibrium. If two of the forces are 60 N 30 0 east of north and 104 N 60 0 east of south, what is the magnitude and direction of the third force? 2. What is the acceleration of the box as figure below? 5 kg Fric=100 N A conical pendulum of length 0.6 m with a mass of 50 gr hanging from the string has period of 0.8 s. What is the tension in the string? What is the angle? 4. Two masses of 15 kg and 20 kg are connected by a light in inextensible string and hung over the frictionless pulley. What is the acceleration of the system once it is released?