Here are 10 one-word answer type questions based on the subtopic “Objects May Float or Sink in Water” from the chapter Sorting Materials into Groups in Class 6 NCERT Science, with answers and explanations included:
1. Question: What do we call objects that stay on the surface of water?
Answer: Float
Explanation: Objects that are lighter than water or have less density float on its surface.
2. Question: What do we call objects that go to the bottom of water?
Answer: Sink
Explanation: Objects that are heavier or denser than water sink when placed in it.
3. Question: What property of an object determines whether it will float or sink?
Answer: Density
Explanation: Density is the mass per unit volume of an object and decides whether it will float or sink in water.
4. Question: Will a stone float or sink in water?
Answer: Sink
Explanation: A stone is dense and heavy, so it sinks in water.
5. Question: Will a piece of dry wood float or sink in water?
Answer: Float
Explanation: Dry wood is less dense than water, so it floats.
6. Question: Which part of a tree, when dry, usually floats in water?
Answer: Leaf
Explanation: A dry leaf is lightweight and can float on water due to its low density.
7. Question: What force pushes up an object placed in water?
Answer: Buoyancy
Explanation: Buoyancy is the upward force exerted by water that helps objects float.
8. Question: Will a plastic bottle with air inside float or sink?
Answer: Float
Explanation: A plastic bottle filled with air is light and buoyant, so it floats.
9. Question: Does iron normally float or sink in water?
Answer: Sink
Explanation: Iron is a heavy and dense metal, so it sinks in water.
10. Question: What natural material like cork is known to float easily?
Answer: Wood
Explanation: Cork and most types of wood float because they are less dense than water.
Let me know if you’d like the next set based on “Transparency” or want a worksheet combining all topics!
