Make sketches of animal and plant cells. State three differences between them.

Describe with the help of a diagram an instrument which can be used to detect a charged body.

Sketch larynx and explain its function in your own words.

What is metamorphosis? Give examples.

Make a labelled diagram of a candle flame.

Arrange the following boxes in proper order to make a flow chart of sugarcane crop production.

The following Table shows the total power shortage in India from 1991– 1997. Show the data in the form of a graph. Plot shortage percentage for the years on the Y-axis and the year on the X-axis.

What is a constellation? Name any two constellations.

Describe the construction of a kaleidoscope.

Make a sketch of the human nerve cell. What function do nerve cells perform?

Draw a labeled sketch of the human eye.

Explain in what way noise pollution is harmful to humans.

What is the difference between noise and music? Can music become noise sometimes?

Draw a labeled sketch of the human eye.

The radius of Jupiter is 11 times the radius of the Earth. Calculate the ratio of the volumes of Jupiter and the Earth. How many Earths can Jupiter accomodate?

Explain why the following are made of thermosetting plastics.
(a) Saucepan handles
(b) Electric plugs/switches/plug boards

Fill in the blanks:

(a) Microorganisms can be seen with the help of a ____________.
(b) Blue green algae fix __________ directly from air to enhance fertility of soil.
(c) Alcohol is produced with the help of __________.
(d) Cholera is caused by __________.

Describe with the help of a diagram an instrument which can be used to detect a charged body.

Explain how fertilisers are different from manure.

Describe the threat to the beauty of the Taj Mahal.

What is a constellation? Name any two constellations.