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12. Light and sound

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12. Light and sound Fill in the blanks.  1. Objects which cannot give out their own light are called Non - luminous.  2. Trandparent   object allow light to pass through them completely.  3. Reflection   is bouncing back of light from a smooth shiny surface.  Write true or false.  1. Sound does not require any medium to travel. (F)   2.The sound of loudspeaker is an unpleasant sound. (T)  3.sound travels through air in the form of particles. (F)  Let us practise 1. Fill in the blanks.  a. Noise is produced by irregular    sound waves.  b. Sun is the main source of heat and light on earth.  c. When light hits a surface and cannot pass through it, the surface is called opaque.  d. Sound is produced due to vibration of objects.  2 . Write 'T' for true and 'F' for false.  a. Honking car is an example of a pleasant sound. (F)  b. Light cannot bend around the cornera. (T)   c. Wat...

above 90 ℅ in exams

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To rating above 90% in any exam, college students can comply with these tips: topper Study Habits 1. *Create a find out about schedule*: Plan out learn about time every day, placing apart devoted time for every subject. 2. *Focus on grasp concepts*: Instead of simply memorizing, focal point on appreciation the standards and good judgment in the back of every topic. 3. *Practice regularly*: Regular exercise helps improve studying and builds confidence. Learning Strategies 1. *Break down complicated topics*: Break down complicated subjects into smaller, manageable chunks, making it less difficult to recognize and retain. 2. *Use visible aids*: Use diagrams, charts, and illustrations to assist visualize and be mindful concepts. 3. *Get adequate sleep*: Adequate sleep is quintessential for reminiscence consolidation and learning. Additional Tips 1. *Seek assist when needed*: Don't hesitate to ask instructors or dad and mom for assist when struggling with a concept. 2. *Stay...

choose best school

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choose best school Choosing the quality faculty for your baby is a quintessential selection that can have an effect on their academic, social, and emotional development. Here are some elements to consider: Academic Performance 1. *Curriculum*: Consider the kind of curriculum offered, such as CBSE, ICSE, or country board. 2. *Results*: Check the school's tutorial performance, together with board examination effects and aggressive examination scores. 3. *Teaching methods*: Look for colleges that use progressive and interactive instructing methods. Infrastructure and Facilities 1. *Classrooms*: Ensure lecture rooms are well-equipped, clean, and conducive to learning. 2. *Libraries*: Check if the faculty has a well-stocked library with a broad vary of books. 3. *Sports facilities*: Consider faculties with suitable sports activities facilities, such as playgrounds, gyms, and sports activities equipment. 4. *Technology*: Look for colleges that comprise technology, such as dig...