Mirage or have you seen mirage which is an illusion of water on a hot road or desert. Explain

Have you seen any diseased plant in your farm?

Explain 'mirage' as an illustration of refraction OR What is a mirage?

An illusion of the appearance of water on a hot road or in a desert is an example of dispersion of light. True/false

Cut pieces of beetroot do not leave colour in cold water but do so in hot water. Explain.

Answer the following questions : Anu and anand have concave and convex lenses respectively . They took lenses in sunlight and tried to burn two pieces of paper of equal areas and temperature . State which lens will burn the paper. Give the reason . Explain with the help of diagram, why the other paper did not burn.

Which units have you used in the laboratory for measuring time?

Vinaya while playing in garden observed a pond with a green coloured covering which was floating on the surface of water? Next day she asked her teacher about the same. What her teacher must have told her?

You have heard about several insectivorous plants that feed on insects. Nepenthes or the pitcher plant is one-such example, which usually grows in shallow water or in marsh lands. What part of the plant is modified into-a 'pitcher'? How does this modification’help.the plant for food even though it can, photosynthesize like any Other green plant?

Which disasters have you experienced in your area?

Which units have you used in the laboratory for measuring mass ?