Light, Shadows and Reflections — Science STD 6 — Question

Write the adaptation in aquatic plants due to which:
submerged leaves can bend in the flowing water.

Describe the process of using a thread to measure the length of a curved line.

Why is separating different components of a mixture necessary?

Activity.
Take a small candle and measure its length with a scale. Now, fix it at a suitable place and light it. Let it burn for some time. Now blow out the candle and measure its length again.
Can the change in the length of the candle be reversed? If we were to take some wax in a pan and heat it, can this change be reversed?

When the chemicals in the electric cell are used up, the electric cell stops producing electricity. The electric cell is then replaced with a new one. In case of rechargeable batteries (such as the type used in mobile phones, camera and inverters), they are used again and again. How?

Distinguish between the following:
Threshing and Winnowing.

Do all flowers have the same parts and are they arranged in the same way?

How do we get salt from sea water?

What is the importance of water cycle?

Draw a diagram to show a circuit.