Question

Following is the list of temperatures of five places in India, on a particular day of the year.

	Place	Temperature
(i)	Siachen	${{10}^{\circ }}C$ below 0 degree C
(ii)	Shimla	${{2}^{\circ }}C$ below 0 degree C
(iii)	Ahmedabad	${{30}^{\circ }}C$ below 0 degree C
(iv)	Delhi	${{20}^{\circ }}C$ below 0 degree C
(v)	Srinagar	${{5}^{\circ }}C$ below 0 degree C

A. Write the temperature of these places in the form of integers in the blank column.
B. Following is the number line representing the temperatures in degrees Celsius. Plot the name of the city against its temperature.
C. Which is the coolest place?
D. Write the names of the places where the temperatures are above ${{10}^{\circ }}C$.

Answer 1

Hint: A number line is a simple line having numbers as marked on it to show various information associated to that point. It has two parts separated by number zero. Numbers towards the right of the number line are greater than zero and numbers towards the left of the number line are lesser than zero. By using this knowledge, we can easily solve our problem.

Complete step by step answer:
According to the question we are given some data and asked for the questions that are completely dependent on that data. So, the given temperatures are:

	Place	Temperature
(i)	Siachen	${{10}^{\circ }}C$ below 0 degree C
(ii)	Shimla	${{2}^{\circ }}C$ below 0 degree C
(iii)	Ahmedabad	${{30}^{\circ }}C$ below 0 degree C
(iv)	Delhi	${{20}^{\circ }}C$ below 0 degree C
(v)	Srinagar	${{5}^{\circ }}C$ below 0 degree C

 And we can write them as

	Place	Temperature
(i)	Siachen	$-{{10}^{\circ }}C$
(ii)	Shimla	$-{{2}^{\circ }}C$
(iii)	Ahmedabad	$-{{30}^{\circ }}C$
(iv)	Delhi	$-{{20}^{\circ }}C$
(v)	Srinagar	$-{{5}^{\circ }}C$

So, we will solve the following questions based on this data.
A. Temperature of these places in the form of integers in the blank column:

-10

-2

30

20

-5

B. The representation on number line of the temperature in degree Celsius is:

C. The coolest place: As the leftmost place on the number line is Siachen, so it is the coolest place.
D. Delhi and Ahmedabad are the places which have temperatures of more than ${{10}^{\circ }}C$.

Note: The key step for solving this question is the knowledge of numbers represented on a number line. Students must be careful about the sign of the numbers which are represented on the number line to avoid any errors.