Take an empty glass bottle. Turn it upside down. Dip the open mouth of the bottle into the bucket filled with water as shown in Figure 15.13 (a). Does water enter the bottle? Now tilt the bottle slightly. Can you see water entering the bottle? Do you see bubbles coming out of the bottle or hear any bubble sound Figure 15.13(b)? Can you explain bubbles coming out of the bottle?

a. The water does not enter the bottle as thee is air filled inside the bottle which is not allowing the water to enter into it. It shows air has mass and weight. b.When we tilt the bottle we can see the water entering the bottle while releasing the air from inside the bottle. This air comes out of the bottle as bubbles through water in the bucket. This shows that air is present everywhere.

E M B I B E

Pruquest Science>Chapter 15 - Air>Think and Apply>Q 2

MEDIUM

6th CBSE

IMPORTANT

Earn 100

Humidity is more in Ahmedabad than in Jaipur. Why?

Important Questions on Air

MEDIUM

6th CBSE

IMPORTANT

Pruquest Science>Chapter 15 - Air>Think and Apply>Q 3

List five activities that are possible because of the presence of air.

MEDIUM

6th CBSE

IMPORTANT

Pruquest Science>Chapter 15 - Air>Analyse>Q 1

Take an empty glass bottle. Turn it upside down. Dip the open mouth of the bottle into the bucket filled with water as shown in Figure 15.13 (a). Does water enter the bottle?
Question Image

Now tilt the bottle slightly. Can you see water entering the bottle? Do you see bubbles coming out of the bottle or hear any bubble sound Figure 15.13(b)? Can you explain bubbles coming out of the bottle?

HARD

6th CBSE

IMPORTANT

Pruquest Science>Chapter 15 - Air>Analyse>Q 2

Look at the picture of the following animals in Figure 15.14. Explain how do these animals take in oxygen.