Chapter 16 Garbage In Garbage Out
Chapter 16 Garbage In Garbage Out 1. (a) Which kind of garbage is not converted into compost by the redworms? (b) Have you seen any other organism besides redworms, in your pit? If yes, try to find out their names. Draw pictures of these. Ans: (a) Garbage substances like broken glass, aluminium wrappers, plastic items, […]
Chapter 15 Air Around Us
Chapter 15 Air Around Us 1. What is the composition of air? Ans: Air is mixture of nitrogen, oxygen, carbon dioxide, water vapour and a few other gases. Some dust particles may also be present in it. 2. Which gas in the atmosphere is essential for respiration? Ans: Oxygen. 3. How will you show that air supports […]
Chapter 14 Water
Chapter 14 Water 1. Fill up the blanks in the following: (a) The process of changing of water into its vapour is called_______________ . (b) The process of changing water vapour into water is called_____________ . (c) No rainfall for a year or more may lead to _____________ in that region. (d) Excessive rains may […]
Chapter 13 Fun with Magnets
Chapter 13 Fun with Magnets 1. Fill in the blanks in the following: (i) Artificial magnets are made in different shapes such as_________ ,_______ and (ii) The materials which are attracted towards a magnet are called_________ (iii) Paper is not a________ (iv) In olden days, sailors used to find direction by suspending a piece of […]
Chapter 12 Electricity and Circuits
Chapter 12 Electricity and Circuits 1. Fill in the blanks: (a) A device that is used to break an electric circuit is called_______________ (b) An electric cell has___________ Ans: (a) switch (b) two 2. Mark ‘True’ or ‘False’ for the following statements: (a) Electric current can flow through metals. (b) Instead of metal wires, a […]
Chapter 11 Light Shadows and Reflection
Chapter 11 Light Shadows and Reflection 1. Rearrange the boxes given below to make a sentence that helps us understand opaque objects. Ans: 2. Classify the objects or materials given below as opaque, transparent or translucent and luminous or non-luminous: Air, water, a piece of rock, a sheet of aluminium, a mirror, a wooden board, […]
Chapter 10 Motion and Measurement of Distances
Chapter 10 Motion and Measurement of Distances 1. Give two examples each of modes of transport used on land, water and air. Ans: (i) Land—Bus, truck, train. (ii) Water—Ship, boat. (iii) Air—Aeroplane, Helicopter. 2. Fill in the blanks: (i) One metre is___________ (ii) Five kilometre is___________ (iii) Motion of a child on a swing is_____________ […]
Chapter 9 The Living Organisms and Their Surroundings
Chapter 9 The Living Organisms and Their Surroundings 1. What is a habitat? Ans: The surroundings where animals live is called their habitat. The organisms depend on their habitat for their food, water, air, shelter and other needs. Habitat means a dwelling place. 2. How are cactus adapted to survive in a desert? Ans: Cactus are adapted […]
Chapter 8 Body Movements
Chapter 8 Body Movements 1. Fill in the blanks: (a) Joints of the bones help in the_____________ of the body. (b) A combination of bones and cartilages forms the_______________ of the body. (c) The bones at the elbow are joined by a______________ (d) The contraction of the____________ pulls the bones during Ans: (a) movement (b) skeleton […]
Chapter 7 Getting to Know Plants
Chapter 7 Getting to Know Plants Textbook Questions Solved 1. Correct the following statements and rewrite them in your notebook. (a) Stem absorbs water and minerals from the soil. (b) Leaves hold the plant upright. (c) Roots conduct water to the leaves. (d) The number of sepals and petals in a flower is always equal. […]