temperature is measured in how many types name them?
Fahrenheit, Celsius, Kelvin and Rankine are the four most commonly used types of temperature scales.
(a) How many types of blood vessels are there in the human body ? Name them. (b) Why does the heart need valves ?
Where is the heart located? How many chambers are present in the heart? Name them. Explain the two types of blood circulation? [5 MARKS]
In the adjoining figure, ABCD is a quadrilateral. (i) How many pairs of adjacent sides are there? Name them. (ii) How many pairs of opposite sides are there? Name them. (iii) How many pairs of adjacent angles are there? Name them. (iv) How many pairs of opposite angles are there? Name them. (v) How many diagonals are there? Name them.