Secondary School (English Medium) (5 to 8) इयत्ता ६ - CBSE Question Bank Solutions for Science

Answer the following:

What is a ball and socket joint?

Answer the following:

Why can our elbow not move backwards?

The finger bones do not have joints.

Classify the objects or materials given below as opaque, transparent or translucent and luminous or non-luminous:

Air, water, a piece of rock, a sheet of aluminium, a mirror, a wooden board, a sheet of polythene, a CD, smoke, a sheet of plane glass, fog, a piece of red hot iron, an umbrella, a lighted fluorescent tube, a wall, a sheet of carbon paper, the flame of a gas burner, a sheet of cardboard, a lighted torch, a sheet of cellophane, a wire mesh, kerosene stove, sun, firefly, moon.

You have 3 opaque strips with very small holes of different shapes as shown in the following figure. If you obtain an image of the sun on a wall through these holes, will the image formed by these holes be the same or different?

Is air around us always transparent? Discuss.

The arrangement to store two magnets is shown by figures (a), (b), (c) and (d) in the following figure. Which one of them is the correct arrangement?

Three magnets A, B and C were dipped one by one in a heap of iron filing. Figure shows the amount of the iron filings sticking to them.

The strength of these magnets will be

Where do bees store honey?

In a bar magnet, magnetic attraction is ______ near its ends.

Four identical iron bars were dipped in a heap of iron filings one by one. Figure shows the amount of iron filings sticking to each of them.

1. Which of the iron bar is likely to be the strongest magnet?
2. Which of the iron bars is not a magnet? Justify your answer.

Four identical iron bars were dipped in a heap of iron filings one by one. Fig. 13.5 shows the amount of iron filings sticking to each of them.

Which of the iron bars is not a magnet? Justify your answer.

Label and colour the different parts of the plant given below in figure.

Describe the steps involved in magnetising an iron strip with the help of a magnet.

Boojho kept a magnet close to an ordinary iron bar. He observed that the iron bar attracts a pin as shown in the following figure.

What inference could he draw from this observation? Explain.

Suggest an arrangement to store a U shaped magnet. How is this different from storing a pair of bar magnets?

The quantity of water required to produce one page of your book is ______.

Transpiration is a process in which plants ______.

Why do wet clothes placed on a clothes line get dry after some time? Explain.

How do the areas covered with concrete affect the availability of ground water?