English

As part of his science project, Prithvi was supposed to record the temperature every hour one Saturday from 6 am to midnight. At noon, he was taking lunch and forgot to record the temperature.

Advertisements
Advertisements

Question

As part of his science project, Prithvi was supposed to record the temperature every hour one Saturday from 6 am to midnight. At noon, he was taking lunch and forgot to record the temperature. At 8:00 pm, his favourite show came on and so forgot again. He recorded the data so collected on a graph sheet as shown below.

  1. Why does it make sense to connect the points in this situation?
  2. Describe the overall trend, or pattern, in the way the temperature changes over the time period shown on the graph.
  3. Estimate the temperature at noon and 8 pm.
Graph
Advertisements

Solution

  1. By connecting the points, it is easier to understand a change in the temperature.
  2. Initially the temperature was 8°C at 6 am and started increasing strictly till 1 pm and after that it decreased to 8°C till 12 pm.
  3. At 12 pm 19°C and at 8 pm 10°C.
shaalaa.com
  Is there an error in this question or solution?
Chapter 12: Introduct To Graphs - Exercise [Page 395]

APPEARS IN

NCERT Exemplar Mathematics Exemplar [English] Class 8
Chapter 12 Introduct To Graphs
Exercise | Q 81. | Page 395

RELATED QUESTIONS

The following graph shows the temperature forecast and the actual temperature for each day of a week.

  1. On which days was the forecast temperature the same as the actual temperature?
  2. What was the maximum forecast temperature during the week?
  3. What was the minimum actual temperature during the week?
  4. On which day did the actual temperature differ the most from the forecast temperature?

Use the tables below to draw linear graphs.

The number of days a hill side city received snow in different years.

Year 2003 2004 2005 2006
Days 8 10 5 12 

Use the tables below to draw linear graphs.

Population (in thousands) of men and women in a village in different years.

Year 2003 2004 2005 2006 2007
Number of men 12 12.5 13 13.2 13.5
Number of women 11.3 11.9 13 13.6 12.8 

A courier-person cycles from a town to a neighboring suburban area to deliver a parcel to a merchant. His distance from the town at different times is shown by the following graph.

  1. What is the scale taken for the time axis?
  2. How much time did the person take for the travel?
  3. How far is the place of the merchant from the town?
  4. Did the person stop on his way? Explain.
  5. During which period did he ride fastest?

Can there be a time-temperature graph as follows? Justify your answer.


Draw the temperature-time graph in each of the following cases:

Time (in hours): 8:00 10:00 12:00 14:00 16:00 18:00 20:00
Temperature (°F) in: 100 101 104 103 99 98 100

The runs scored by a cricket team in first 15 overs are given below:

Overs: I II III IV V VI VII VIII IX X XI XII XIII XIV XV
Runs: 2 1 4 2 6 8 10 21 5 8 3 2 6 8 12

Draw the graph representing the above data in two different ways as a graph and as a bar chart.


Find out from the growth chart

  • Between which days did the length of the plant change the most?

Find out from the growth chart

  • Will the plant keep growing all the time? What will be its length on the 100th day? Make a guess!

Study the graph and answer the questions that follow.

  1. What information does the graph give?
  2. On which day was the temperature the least?
  3. On which day was the temperature 31°C?
  4. Which was the hottest day?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×