|
Plot a distance-time graph of the tip of the second hand of a clock by selecting 4 points on x-axis and y-axis respectively. The circumference of the circle traced by the second hand is 64 cm
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0
|
5713
|
March 23, 2018
|
|
Starting from A, Paheli moves along a rectangular path ABCD as shown in figure below. She takes 2 minutes to travel each side. Plot a distance-time graph and explain whether the motion is uniform or non-uniform
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0
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9149
|
March 23, 2018
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How do small desert animals like scorpions escape from the heat of the desert?
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0
|
823
|
March 23, 2018
|
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A spaceship travels 36,000 km in one hour. Express its speed in km/s
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0
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2568
|
March 23, 2018
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The tropical rainforests have a large population of animals. Explain why it is so
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0
|
1324
|
March 23, 2018
|
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Write three adaptations in a polar bear that help it to survive in the polar regions
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0
|
774
|
March 23, 2018
|
|
Complete the data of the table given below with the help of the distance-time graph given in figure
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0
|
2227
|
March 23, 2018
|
|
How is a camel adapted to live in the desert?
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0
|
5793
|
March 23, 2018
|
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Explain with the help of an example that the states of rest and motion are relative terms
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0
|
1496
|
March 23, 2018
|
|
How do elephants living in the tropical rainforest adapt itself?
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0
|
2555
|
March 23, 2018
|
|
Distinguish between uniform and non-uniform motion
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0
|
1324
|
March 23, 2018
|
|
Explain, with examples, why we find animals of certain kind living in particular climatic conditions
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0
|
1905
|
March 23, 2018
|
|
Indicate the type of climate of the following areas:
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0
|
1042
|
March 23, 2018
|
|
When are the maximum and minimum temperatures likely to occur during the day?
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0
|
1086
|
March 23, 2018
|
|
Name the elements that determine the weather of a place
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0
|
1596
|
March 23, 2018
|
|
Distinguish between migration and hibernation
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0
|
2482
|
March 23, 2018
|
|
Mention two adaptive features of penguin that help it in swimming
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0
|
1999
|
March 23, 2018
|
|
Distinguish between the following. Cell and Battery ,An Open Switch and A Close Switch
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0
|
4548
|
March 23, 2018
|
|
Write two common adaptive features of a polar bear which help in keeping it warm
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0
|
1007
|
March 23, 2018
|
|
Name two animals each that live in polar region and tropical rainforests
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0
|
3898
|
March 23, 2018
|
|
With the help of an activity explain the making of an electromagnet
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0
|
2054
|
March 23, 2018
|
|
The bulb in the circuit shown in figure below does not glow. Can you identify the problem? Make necessary changes in the circuit to make the bulb glow
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0
|
2416
|
March 23, 2018
|
|
Why is it difficult to predict the weather of a place while it is easy to predict its climate?
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|
0
|
2700
|
March 23, 2018
|
|
In the circuit shown below
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0
|
690
|
March 23, 2018
|
|
Distinguish between the following. Physical change and Chemical change Exothermic reaction and Endothermic reaction
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0
|
2717
|
March 23, 2018
|
|
Describe a simple experiment to show that the bulb lights up when an electric circuit is complete and vice-versa
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0
|
2797
|
March 23, 2018
|
|
Describe how crystals of copper sulphate are prepared
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0
|
13285
|
March 23, 2018
|
|
How does the magnetic effect of electric current help in the working of an electric bell? Explain with the help of a diagram
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0
|
7172
|
March 23, 2018
|
|
A student took a solution of copper sulphate in a beaker and put a clean iron nail into it and left it for about an hour
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0
|
7399
|
March 23, 2018
|
|
Paheli took a wire of length 10 cm. Boojho took a wire of 5 cm of the same material and thickness
|
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0
|
7411
|
March 23, 2018
|