Float or Sink

Q.

What is sanitation?

Q. Which of the following aluminium foil item will sink in water?

1. 
2. 
3. 
4. 

Q. Which factor will decide whether an object will float or sink?

1. Volume
2. Mass
3. Density
4. Shape

Q. Empty plastic bottles float on water because their density is ________ that of water.

1. less than
2. more than
3. equal to
4. not comparable to

Q. Soap sinks whereas soap case which is made of plastic floats on water.

1. True
2. False

Q.

Which of the following does not show water shortage?

1. Taps running dry.

2. Long queues for getting water

3. Marches and protests for the demand for water.

4. A family gets three buckets of water per person per day.

Q. Which of the following things will float on water?

1. 
2. 
3. 
4. 

Q. Mark has two lemons. He puts one lemon in distilled water and one lemon in water containing excess salt. What would he observe?

1. Lemon will float on distilled water.
2. Lemon will float on salty water.
3. Lemon will sink in distilledwater.
4. Lemon will sink in salty water.

Q.

If the density of an object is __________ than the density of the liquid in which it is immersed, the object will float.

Q. The quantity that tells how closely a material is packed is called _______.

1. mass
2. length
3. density
4. volume

Q.

When the weight of the body is less than that of a liquid displaced by it, the body will_________________

Q. The empty wooden bowl shown in the image below, will float on the surface of water.

1. True
2. False

Q.

Mark ‘T’ if the statement is true and ‘F’ if it is false: Water shortage is a problem faced only by people living in rural areas. (T/F)

Q. Joy has two balls, one is made of wood and other is made of iron. He drops both the balls in water. What would he observe?

1. Iron ball will float.
2. Iron ball will sink.
3. Wooden ball will float.
4. Wooden ball will sink.

Q. Which of the following does not contribute to water pollution?

1. Industrial effluents into the water bodies
2. Oil spills in the seas or oceans
3. Excessive growth of aquatic life
4. Dumping of plastic bags into the water bodies

Q.

A body that normally sinks in water can be made to float by ______________its volume .

Q. An object will sink or float in a liquid depending upon its:

1. mass
2. temperature
3. density
4. size

Q. Which of the following is/are responsible for the ecological imbalance in nature?

1. Water pollution
2. Deforestation
3. Air pollution
4. Tree plantation

Q. While travelling, which of the following can be used to store drinking water?

1. Bottle
2. Bucket
3. Mashk
4. Tank

Q. Rahul puts a lime in a water container and observes that the lime sinks to the bottom of the container. Which of the following will help the lime to float?

1. Cutting the lime in half
2. Adding more water to the container
3. Mixing sand to the water
4. Mixing salt to the water

Q. A football floats on water because of the __________

1. size
2. colour present on it
3. air present in it
4. shape

Q.

Give reason:

A balloon filled with hydrogen rises to the ceiling.

Q. Rahul puts a lime in a water container and observes that the lime sinks to the bottom of the container. Which of the following will help the lime to float?

1. Cutting the lime in half
2. Adding more water to the container
3. Mixing sand to the water
4. Mixing salt to the water

Q. How do water pollution causes eutrophication .
b) List two activities of man which lead to environment pollution.

Q. Select the correct option with respect to statements given below?

A: Water in dead sea is denser than an average human being.
B: Objects that are denser than water will float on water.

1. Statement A and B are true
2. Statement A and B are false
3. Only statement B is true
4. Only statement A is true

Q. Mark has two lemons. He puts one lemon in distilled water and one lemon in water containing excess salt. What would he observe?

1. Both the lemons will sink
2. Both the lemons will float
3. Lemon in distilled water will float
4. Lemon in salt water will float

Q. What can you say about water A and water B on observing the image below?

1. Water A is salt water
2. Water A is normal water
3. Water B is salt water
4. Water B is normal water

Q. Which of the following does not contribute to water pollution?

1. Industrial effluents into the water bodies
2. Dumping of plastic bags into the water bodies
3. Oil spills in the seas or oceans
4. Excessive growth of aquatic life

Q. Which of the following items made of aluminium foil will sink in water?

3. \( \infty \)
4. 12

Q.

Give reason : A ship floats in water.