Secondary School (English Medium) (5 to 8) इयत्ता ७ - CBSE Question Bank Solutions for Science

The inner surface of a steel spoon acts as a ______ mirror.

The outer surface of a flat steel plate acts as a ______ mirror.

The outer shining surface of a round bottom steel bowl acts as a ______ mirror.

The inner surface of the reflector of a torch acts as a ______ mirror.

What type of mirror is used as a side mirror in a scooter? Why is this type of mirror chosen?

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?

An erect and enlarged image of an object is formed on a screen. Explain how this could be possible.

You are given three mirrors of different types. How will you identify each one of them?

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

From where do the following usually get water? In which form is water present in them?

Mountain tops

Which of the following is not the name of a tree?

Pick the option which gives the names of a tree and an animal, respectively from the following.

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

Which of the following is the correct match between the characteristics of stem and the category of plant?

Name the following:

A plant that is partially autotrophic.

Go to a doctor or your nearest health centre. Observe the doctor taking the temperature of patients. Enquire:

1. Why she dips the thermometer in a liquid before use.
2. Why the thermometer is kept under the tongue.
3. Whether the body temperature can be measured by keeping the thermometer at some place other than the mouth.
4. Whether the temperature of different parts of the body is the same or different.

You can add more questions which come to your mind.

Go to a veterinary doctor (a doctor who treats animals). Discuss and find out the normal temperature of domestic animals and birds.

Visit a doctor. Find out the medicines, he prescribes to treat acidity. Ask him how acidity can be prevented.

Prepare crystals of alum.

Role play

Here is a game that a group of children can play. One child will be chosen to act as object and another will act as the image of the object. The object and the image will sit opposite to each other. The object will make movements, such as raising a hand, touching an ear etc. The image will have to make the correct movement following the movement of the object. The rest of the group will watch the movements of the image. If the image fails to make the correct movement, she/he will be retired. Another child will take her/his place and the game will continue. A scoring scheme can be introduced. The group that scores the maximum will be declared the winner.