Question

1. How does the density of water

change when

(a) it is heated from 0°C to 4°C, (b) it

is heated from 4°C to 10°C ?

2. Write the density of water at 4°C.

3.Explain the meaning of the term

speed.

4. Write the S.I. unit of speed.

5. A car travels with a speed 12 m s-¹,

while a scooter travels with a speed

36 km hl. Which of the two travels

faster ?​

Answer 1

Answer:

The density of water can also be affected by temperature. When the same amount of water is heated or cooled, its density changes. When the water is heated, it expands, increasing in volume. ... The warmer the water, the more space it takes up, and the lower its density

Answer 2

Answer:

5-The car is faster than the scooter

Explanation:

car speed is mare than the scooter