Sorting Materials and Groups — Science STD 6 — Question

Four identical iron bars were dipped in a heap of iron filings one by one. The figures given below show the amount of iron filings sticking to each of them.

1. Which of the iron bars is likely to be the strongest magnet?
2. Which of the iron bars is not a magnet? Justify your answer.

Draw the diagram of a bee hive.

Boojho wanted to test the presence of starch in leaves. He performed the following steps:

1. He took a leaf and boiled it in water.
2. He placed the leaf in a petri dish and poured some iodine over it.

He did not get the expected result. Which step did he miss? Explain.

Solve the crossword given in Fig. as per the clues given below it:

Across

1. The term that describes upward movement of water in a stem.
2. The part of leaf which is attached to the stem.
3. This part is attached to the tip of filament.

Down

1. Plants that are weak and spread on the ground.
2. Ovules are present in this part of flower.
3. Is the broad part of leaf.

Mark the north-poles of two bar magnets and bring the poles of the magnets near each other, and note down your observations in table.

How are cactus adapted to survive in a desert?

Why do desert snakes burrow deep into the sand during the day?

How will you measure the length of any curved line?