Beyond Earth — Science STD 6 — Question

After baking a roti on tawa, it is not possible to get back the ball of dough again. What type of change is this?

What is stimuli?

When do two magnets attract each other?

Activity.Collect some muddy water from a pond or a river. If it is not available, mix some l soil to water in a glass. Let it stand for half an hour. Observe the water carefully ‘ and note your observations.
Does some soil settle at the bottom of water? Why? What will you call this j process?

Which process is used to separate bacteria from water?

Close your eyes while looking towards bright sunshine. Now, cover the eyes with your palm still keeping them closed. Do you notice any difference? On the basis of this experience, state whether your eyelids are transparent, translucent or opaque.

State whether the following statements are true or false. If false, correct them.
Plants produce oxygen during the process of making their own food.

What are creepers?

What are biotic component of habitat?

Some things can be recycled while some cannot. Why should we not throw away anything that can be recycled?