answers of books

9 . Air water and weather Science std 4 1. Multiple choice questions 1.A thick cloud of water drops formed above the land and water is called Ans. Fog 2. Sea breeze blows during Ans. Day 3.which of the following does not increase the evaporation process?  Ans. More humidity 4.which of the following is not correct?  Ans. Frost does not cause any damage to crops.  2. Fill in the blanks.  a. The conversion of water vapour into water is called condensation.  b. Droplets of water found on the ground on cold winter mornings are called Dew.  c. Water exists in nature as snow, liquid water and water vapour .  d. The level of underground water    in an area is called water table.  3.write true and false .  a. When water vapour condenses on dust particles, rain is formed. (F)  b. Stationary air is called wind. (F)  c. Water exists in nature as snow and liquid water. (T)  d. Forest causes damage to crops. (T)  4. Read the f...

science std 4 8.Our solar system Stateboard question with ans.  Time to Answer Fill in  the blanks.  1. Mercury is the smallest planet.  2. Venus is also known as the morning star.  3.Moon is a heavenly body that moves around planets.  4.Mars is also called the red planet.  5.Jupiter is the largest planet.  Fill in the blanks.  1.The Rotation of the earth causes day and night.  2.The revolution of the earth causes seasons .  3. The sunbrises from east and sets in the West .  4.The outermost hard layer of the earth is called crust .  5. Short answer type questions a. What is an orbit?  Ans. Orbit is a curved path followed by a planet or an object as it moves around another planet, star, moon etc b. What is the difference between a star and a planet?  Ans.  .         Star                           ...

answersofbooks.blogspot.com Time to answer Full in the blanks.  1. The waste material which can be decomposed by microbes in the soil are called biodegradable waste 2.Non- biodegradable wastes pollute the soil 3.plastics and glass should be thrown in blue bins for recycling.  1. Multiple choice questions (MCQs)  Tick(√) the correct option.   a . Which of the following types of pollution causes respiratory diseases and lung cancer?  Ans. 1.Air pollution b. Which of the following are the effects of soil pollution?  Ans. 3.water pollution c. Which of the following should be thrown in green bins?  Ans. Plastic cup d. Air pollution affects Ans. 3.brain Q2. Fill in the blanks.  a. Soil pollution badly affects the growth of crops/ plant.  b. Smoke causes Air pollution.  c. We should not use plastic bags as they are nob-biodegradable.  3. Name the following.  a. Two living components of your environment 1.plan...

Science std 4 6. Food and digestion Time to answer Fill in the blanks.  1. Substances found in food which keep our body healthy are known as Nutrients 2. The fibre present in our food is known as Roughage.  3 . calcium help in the formation of teeth and bones.  4. Vitamin. D    is made in our body with the help of sunlight.  Write true or false 1. Chew food well before swallowing. (T)   2.Always eat fried food, sweets and icecream. (F)   3.Avoid eating green vegetables and fruits (F)   4. One should not overeat. (T)   Let us practise 1.Multiple choice questions (MCQs)  Tick(√) the correct option.  a. Which of the following statements is not true in the context of saliva?  Ans. It does not help in digestion.  b. Which of the following is a boy building food?  Ans. 4.both 1&2 c. Which of the folly digestive system components is the longest?  Ans. 1.small intestine d. Ibesity leads to many dise...