Highlights of the cycle_COS_physics_G9_13th Sept. to 21st Sept.

Highlights of the cycle_COS_physics_G9_13th Sept. to 21st Sept.

Learners were introduced to the concept of pressure with the help of an activity in which balloon and thumb pins were used. The demonstration made them understand what does pressure mean.

Highlights_COS_physics_G9_28th Aug to 9th Sept

Highlights_COS_physics_G9_28th Aug to 9th Sept

Learners were introduced to the concepts of momentum, impulse of force and moment of force (turning effect of force). And they were made to solve numericals based on above concepts.

Syllabus for term one exam_COS_G8

Syllabus for term one exam_COS_G8

Dear learners,

The syllabus for the term one exam of COS is given in the table below.

 Chemistry Biology Physics C1: The particulate nature of matter. B1: Characteristics of living things P1: Motion C3: Atoms, Elements and Compounds. – 3.1: Physical and chemical changes. – 3.2: Elements, compounds and mixtures. – 3.3: Atomic structure and the Periodic Table. – 3.4: Ions and ionic bonds. Describe the formation of ions by electron loss or gain. Describe the formation of ionic bonds between metals and nonmetals as exemplified by elements from Groups IÃ‚Â and VII.Ã‚Â  Explain the formation of ionic bonds between metallic and nonmetallic elements. B2: Cells -2.1:Cell structure -2.2:Movement in and out of the cells P2: Matter and forces 2.1 Mass and weight 2.2 Density 2.3 Effects of forces 2.4 Pressure C9: The Periodic Table. – Describe the way the Periodic Table classifies elements in order of atomic (proton) number. – Use the Periodic Table to predict properties of elements by means of groups and periods. – 9.1: Periodic trends. B3: Enzymes

 Total Marks Paper 2 (MCQÃ¢â‚¬â„¢s) Paper 4 (Subjective) Paper 6 (alternative to practical) 190 40 120 30

For more details, Refer to the CoS 2017-’18 syllabus.

Component details :

Paper-2 : A multiple-choice paper consisting of 40 questions of the four-choice type. Questions will be based on the Extended syllabus content.

Paper-4 : A written paper consisting of short-answer and structured questions. Questions will be based on the Extended syllabus content.

Paper-6 : Questions will be based on the experimental skills.

Instructions :

You all are required to carry an electronic calculator and your own resources.

Highlights of the week_COS_physics_G9

Highlights of the week_COS_physics_G9

Learners were introduced to Newton’s three laws of motion and were made to write and understand the same.

Highlights of the week_COS_physics_G9

Highlights of the week_COS_physics_G9

Learners were introduced to the concept of density and they were made to practice numericals for the same.

Highlights of the week_COS_physics_G9

Highlights of the week_COS_physics_G9

Learners performed an experiment to find the spring constant of the given spring and also verified the Hooke’s law with the same. They plotted a graph for extension vs force and also analysed the same.

Highlights of the week_COS_physics_G9

Highlights of the week_COS_physics_G9

A discussion was done with learners to make them understand the purpose of doing the activities like tug of war, balancing the ball in half cut pipe and sprinting with the parachute. The conclusion of the discussion lead to the understanding that forces exist as balanced and unbalanced and there is motion when unbalanced forces act on objects. This was followed by explanation that force can also cause extension in the springs and the relation between two quantities is given by Hooke’s law.

Highlights of the week_COS_physics_G9

Highlights of the week_COS_physics_G9

Learners were introduced to the unit with the help of an activity where Newton spring balance was used and they could differentiate between mass and weight. Next, they were made to play games like tug of war, sprinting with a parachute and balancing the ball and transferring the same in a half cut pipe. From all these activities they were introduced to balanced and unbalanced forces and moment of force.

Highlights of the week_physics_G9

Highlights of the week_physics_G9

Learners appeared for the unit test of the unit- motion. It was an online test which had two sections, multiple choice questions and subjective questions.

They got the marks for the MCQ section immediately after attempting the test.