Fibre to Fabric — Science STD 7 — Question

What happens to the current in a circuit at the time of short circuit?

‘Spores’ as a means of asexual reproduction are used by which plants?

The excessive use of water leads to a severe problem. Write the problem.

Natural water is the purest form of water. Explain why or why not.

Paheli thought that new plants always grow from seeds. But, she has never seen the seeds of sugarcane, potato and rose. She wants to know how these plants reproduce?

List some measure to prevent soil pollution.

How many days does the Earth take to complete one revolution around the Sun?

Give two examples of non-metals.

Mosquitoes, bed bugs, lice and leeches suck our blood. Can they be called as parasites?

A current through a horizontal power line flows in north to south direction. What is the direction of magnetic field?

1. At a point directly below it.
2. At a point directly above it.