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The place where two or more bones meet in the skeleton is called a ____

Different planets have different escape velocities because:

Question 9

(a) ___ is a material that burns in the presence of oxygen to release carbon dioxide and a large amount of energy.

(b) Which among the given fuels would result in the least amount of residue on burning?

1. Coal

2. LPG

3. Petrol

• Take some water in a glass. Put a lemon in it. Now keep putting salt in the water, half-a-spoon at a time. Were you able to float your lemon in water?


• What do you think, the lemon floated in salty water, because….

Water freezes at ___ degree celsius.

Ice is used in a cooler in order to cool its contents. Which of the following will speed up the cooling process?

Question 4

Differentiate between surface water and groundwater.

• Why did Gandhiji and his team start doing the job of cleaning? What do you think about this?


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  Do you know any such people in your area who try to help others in solving their problems? Find out.

  
  


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  Guests at Gandhiji’s Ashram had to learn this work also. If you were one of these guests, what would you do?

  
  


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  What are the toilet arrangements in your house? Where is the toilet? Inside the house, or outside? Who cleans the toilet?

  
  


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  How did the man who was returning from the toilet behave with Mahadevbhai? Why did he behave like this?

  
  

About _______ % of the total world's water is freshwater.

(क) पोंगल के दिन घर आँगन को रंगोली से सजाते हैं। रंगोली बनाने के लिए किन-किन चीज़ों का प्रयोग किया जाता है? सूची बनाओ।

(ख) नीचे दी गई जगह में रंगोली का कोई डिज़ायन बनाओ।

George and Emma have got four _________.

• Look at Aarti’s blood report and find out the minimum required haemoglobin?


• How much did Aarti's haemoglobin go up and how long did it take for that?


• What does the newspaper report say about the problems caused by anaemia?


• Have you or anyone in your family ever needed to get a blood test? When and why?


• What was found out by the blood test?


• Have you had a health check up in your school? What did the doctor tell you?

Imagining
yourself as the subject of this poem, write five lines about yourself
in less than five minutes.

You
may like to

• define
  yourself

  
  

• state
  what you do

  
  

• explain
  why people like/dislike you

  
  

• mention
  any other characteristic about yourself

  
  

Do this experiment in groups of four friends. Each group will need a big pot filled with water and the things listed in the table. Put each thing one-by-one in water and observe.

Mark [√] for the things that float. Mark [×] for those that sink.

Find out from the other groups which things floated and which sank in the water?

After doing the experiment, fill in the blanks.

• The iron nail ________ in water but the katori ________. I think this happened because _______________________________________________________________________________.


• The empty plastic bottle _________ on water. The bottle filled with water _________ because ____________________________________________________________________________.


• The aluminium foil _________ when it was spread out. When pressed tightly into a ball it _________. This may have happened because_________________________________________________________________.

A recipe is a list of directions to prepare a dish. The following sentences are not in order for preparing avial. Number them in the correct order.

$\boxed{}$ Grind some coconut, green chillies and garlic.

$\boxed{}$ Cut the vegetable scraps into long strips.

$\boxed{1}$ Wash and clean the mix of vegetable bits.

$\boxed{}$ Decorate with curry leaves.

$\boxed{}$ Whip some curd and mix it in.

$\boxed{}$ Pour some coconut oil on top.

$\boxed{}$ Avial is ready.

The layer of the atmosphere where the jet plane fly is ___.

Write five things that you do at home to make your home look neat and clean.

(i) __________________________________________

(ii) __________________________________________

(iii) __________________________________________

(iv) __________________________________________

(v) __________________________________________

How coal is extracted?

• What kinds of tools are needed for climbing mountains?


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  Have you ever seen a hook and rope being used for anything else? Where?

  
  


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  What else can we use if we want to cross a river in the mountains?

  
  


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  Why do we need extra energy on the mountains?

  
  


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  Have you ever heard of anyone who has done something adventurous? What?

  
  


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  Have you ever done anything adventurous? If yes, tell your class. Write about it in your own words.

  
  

(क) तरह-तरह के बादलों के चित्र बनाओ।

(ख) कविता में बादलों को 'भोला' कहा गया है। इसके अलावा बादलों के लिए और कौन-कौन से शब्दों का इस्तेमाल किया गया है? नीचे लिखे अधूरे शब्दों को पूरा करो।

म .................. ज़ि ......................

शै ................. तू ......................