ummer vacation holiday homework Class - VII Subject- Physics
Q.1 How will you show that heat is a form of energy?
Q.2 Write the name of two solids that contract on heating.
Q.3 Why waterpipes sometimes burst at cold places.
Q.4 Why soft drink glass bottle often cracks when left in the freezer compertment for a long time ?
Q.5 How aquatic animals are surviving at the places where temperature goes down below zero degree Celsius.
Q.6 why mercury is used in thermometer?
Q.7 What is least count ? Write the formula for calculating least count?
Q.8 How will you show that in convection heat is transferred from one point to another with the actual movement of particle.
Q.9 How will you show that black colour is good absorber of heat than white.
Q.10 Why fire brigade men often use shining brass capes?
Answer all question otherwise i will report .
correct answer wil given 50 points snd mark as brainiliest
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the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.
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ma kuch samajh nahi.
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