Coal and Petroleum — Science STD 8 — Question

One student says that water exerts pressure on the bottom of the bucket but another student says that water exerts pressure on the sides of the bucket. What would you like to say?

A rocket has been fired upwards to launch a satellite in its orbit. Name the two forces acting on the rocket immediately after leaving the launching pad (Ignore the frictional force due to air resistance).

Unscramble the underlined words in the following sentences. The development of a caterpillar to an adult butterfly is termed as poommertaissh.

In which direction do stars appear to move in the sky?

What conclusion do you get from the observation that a fountain of water is created at the leaking joint of pipes of the main water supply line?

What do the chloroplasts contain?

Explain the meaning of crop.

What purpose does the tail in a sperm serve ?

On what factor does the pitch of a sound depend?

Write True/ False against the following statement. Wildlife is an exhaustible natural resource.