Please select a subject first
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Your teacher has shown you the following activity.
Activity: Teacher has wound a long insulated piece of wire around an iron nail in the form of a coil. Free ends of the wire are connected to a cell through a switch as shown in the following figure. The current is switched on and some pins are placed near the ends of the nail.
Write down any three questions that come to your mind about this activity.
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Paheli took a wire of length 10 cm. Boojho took a wire of 5 cm of the same material and thickness. Both of them connected the wires as shown in the circuit given in the following figure. The current flowing in both the circuits is the same.
- Will the heat produced in both cases be equal? Explain.
- Will the heat produced be the same if the wires taken by them are of equal lengths but of different thickness? Explain.
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If an object is placed at a distance of 0.5 m in front of a plane mirror, the distance between the object and the image formed by the mirror will be
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The inner surface of a steel spoon acts as a ______ mirror.
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The outer surface of a flat steel plate acts as a ______ mirror.
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The outer shining surface of a round bottom steel bowl acts as a ______ mirror.
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The inner surface of the reflector of a torch acts as a ______ mirror.
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What type of mirror is used as a side mirror in a scooter? Why is this type of mirror chosen?
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The side mirror of a scooter got broken. The mechanic replaced it with a plane mirror. Mention any inconvenience that the driver of the scooter will face while using it?
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An erect and enlarged image of an object is formed on a screen. Explain how this could be possible.
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You are given three mirrors of different types. How will you identify each one of them?
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State whether the following statement is True or False. If false, give the correct statement.
The process of seeping of water into ground is called filtration
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From where do the following usually get water? In which form is water present in them?
Mountain tops
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Which of the following is not the name of a tree?
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Pick the option which gives the names of a tree and an animal, respectively from the following.
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State whether the following statement is true or false. If false, give the correct statement.
In a forest, trees form the uppermost layer, followed by herbs. The shrubs form the lowest layer of vegetation
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Which of the following is the correct match between the characteristics of stem and the category of plant?
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Name the following:
A plant that is partially autotrophic.
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Go to a doctor or your nearest health centre. Observe the doctor taking the temperature of patients. Enquire:
- Why she dips the thermometer in a liquid before use.
- Why the thermometer is kept under the tongue.
- Whether the body temperature can be measured by keeping the thermometer at some place other than the mouth.
- Whether the temperature of different parts of the body is the same or different.
You can add more questions which come to your mind.
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