CBSE Class 5 EVS Experiments With Water Worksheet Set 02

Identification

Question 1. Write S if it sinks in water or F if it floats.
Answer:
1. Iron nail - S (Sinks)
2. Wooden pencil - F (Floats)
3. Stone - S (Sinks)
4. Wooden log - F (Floats)
5. Aluminium foil (flat or ball depending on shape, normally flat sheet or folded) - F (Floats when spread out / Sinks if rolled tightly into a ball, but standard school worksheet expects F for open foil)
6. Empty bowl (metal bowl) - F (Floats due to trapped air)
7. Empty plastic bottle with cap - F (Floats)
8. Matchsticks - F (Floats)
9. Soap case with soap / Soap - S (Sinks)
10. Soap cake - S (Sinks)
In simple words: Objects heavier than water sink, while objects lighter than water or containing trapped air float.

Exam Tip: Remember that density plays a key role; hollow or air-filled objects float even if made of metal or plastic.

Question 2. Mark (✓) for the things that float and (✗) for the things that sink.
Answer:

In simple words: An empty mug floats because of air inside it, but when filled with water it sinks. An iron pin sinks by itself, but floats when placed on top of a leaf due to surface area and buoyancy of the leaf.

Exam Tip: Always distinguish between the object alone and the object placed on a floating medium like a leaf.

ACTIVITY

Question 3. Water is precious. Everyone has to contribute in saving it. Draw a poster to depict what you do or can do at your home to use water carefully in the space provided below and write five lines on it.
Answer:
[Poster Description: A drawing showing a dripping tap being repaired with a wrench, a bucket used instead of a hose pipe for washing a car, and rain harvesting setup.]
Five lines on saving water:
(i) Always turn off the tap tightly after washing hands or brushing teeth.
(ii) Use a bucket and mug instead of a running hose pipe to bathe or wash vehicles.
(iii) Repair leaking taps and pipes immediately to prevent wastage of drinking water.
(iv) Reuse RO wastewater for mopping floors and watering potted plants.
(v) Collect rainwater in containers to use for gardening and cleaning purposes.
In simple words: Save every drop of water by stopping leaks and reusing waste water.

Exam Tip: Mention practical everyday actions like turning off taps and using buckets in your sentences.

Question 4. How is a stepwell different from a borewell?
Answer:
A stepwell (baoli) is a traditional large underground water structure with steps built down to the water level so people can walk down to reach the water. In contrast, a borewell is a narrow, deep hole drilled into the underground water table from which water is pumped out using an electric or hand pump.
In simple words: Stepwells have steps to walk down to water, while borewells are narrow drilled holes using pumps.

Exam Tip: Highlight the presence of steps versus mechanical pumping in your comparison.

Question 5. Tick (✓) the options from which you get water in your house.
(a) Tap water provided by the municipality.
(b) Through a handpump.
(c) Through a pump put directly in the Jal Board line.
(d) Through a borewell.
(e) Through a water tanker.
(f) Directly from a river or a canal.
Answer:
(a) Tap water provided by the municipality. - [ ✓ ]
(b) Through a handpump. - [ depending on location, usually left blank or ticked if applicable; standard urban household ticks (a) and (c) or (d) ]
(c) Through a pump put directly in the Jal Board line. - [ ✓ ]
(d) Through a borewell. - [ ✓ ]
(e) Through a water tanker. - [ ✓ ]
(f) Directly from a river or a canal. - [ ✗ ]
In simple words: Water in houses usually comes from municipal supply, borewells, or tankers, not directly from rivers.

Exam Tip: Tick the sources that are actually connected to your domestic water supply network.

Please refer to attached file for CBSE Class 5 EVS Revision Worksheet- Experiments with Water