Activity – Page No. 93
SOMETHING TO KNOW
A. Tick (✔) the correct option:
1. A horizontal imaginary line that is drawn on the globe exactly halfway between North Pole and South Pole-
(a) Prime Meridian
(b) Equator (✔)
(c) Grid
Answer – (b) Equator (✔)
2. Vertical imaginary lines on the globe are-
(a) Meridians of Longitude (✔)
(b) Parallels of Latitude
(c) Equator
Answer – (a) Meridians of Longitude (✔)
3. Seasons are caused by-
(a) Rotation of the earth
(b) Rotation of the sun
(c) Revolution of the earth around the sun (✔)
Answer – (c) Revolution of the earth around the sun (✔)
4. Which directions is to your right, if you are facing north?
(a) West
(b) East (✔)
(c) South
Answer – (b) East (✔)
5. What does a political map show?
(a) Features like mountains, plains and rivers.
(b) Roads, railways and airline routes.
(c) Boundaries of countries, states and important cities. (✔)
Answer – (c) Boundaries of countries, states and important cities. (✔)
6. Blue colour in a map shows-
(a) Plain land
(b) Hills
(c) Water bodies (✔)
Answer – (c) Water bodies (✔)
B. Fill in the blanks:
[Help Box – earth, rotation, South Pole, four, atlas]
1. A book of maps is called an atlas.
2. There are four cardinal directions on the compass.
3. Magellan did not survive the voyage around the earth.
4. South Pole is the southern-most point on the globe.
5. Day and night on the Earth are caused by the rotation of the Earth.
C. Match the following:
1. Map (e) Scale
2. Globe (d) Grid
3. Direction (a) North
4. Water bodies (b) Blue
5. Physical map (c) Natural features
D. Answer briefly:
1. What is a map?
Answer – A map is a drawing of the earth on a flat surface.
2. Which colour represents plains on a map?
Answer – Green colour represents plains on a map.
3. Name two different types of maps.
Answer – Two different types of maps are –
Political Maps: shows boundaries
Physical maps: shows natural features.
4. Define a scale.
Answer – Scale is the ratio between the actual distance on the ground and the distance show on the map.
Eg. 1cm = 100 kms.
5. How does a globe help us?
Answer – A globe help us in following ways –
It represents a three dimensional view of the earth.
It also shows shape and locations of the oceans and continents.
E. Answer the following questions:
1. Why did people fear to travel to far away places in olden times?
Answer – In olden times people believed that the earth was flat and they might fall of it if they travelled to the edge of the earth, so, they feared to travel to far away. places.
2. Describe the journey of Magellan that proved that the earth was round.
Answer – Ferdinand Magellan and his crew began a voyage from spain in 1519. It started with five ships and a crew of 270. Almost two years later it ended at the same place with only 18 surviving members. It proved that the earth was round.
3. Mention two uses of maps.
Answer – Two uses of maps are:-
Maps show natural features of the earth such as mountains, water bodies, boundaries of the states and cities etc.
Maps also act as a guide to locate places.
4. Name two movements of the Earth. Explain each briefly.
Answer – The two movements of the earth are Rotation and Revolution.
Rotation – It is the movement of the earth on its axis, from west to east.
The earth takes 24 hrs to complete one rotation.
It causes day and night.
Revolution: It is the movement of the earth around the Sun on a fixed path called orbit. • It takes 365 days and six hours to complete one revolution.
It causes change in seasons.
5. Differentiate between a globe and a map.
Answer – Globe
A globe is the true representation of the earth.
It gives three dimensional view of the earth.
A globe is difficult to carry.
Mар
Maps is a drawing of the earth on a flat surface.
It gives two dimensional view of the earth.
Maps can be folded and can be carried easily.
VALUE BASED QUESTIONS:
1. Which two qualities must each student develop to face difficulties like trying to locate a place, inability to read the map of a colony, guiding a visitor on a telephone, etc.
Answer – The two qualities students must develop are:-
(i) Problem solving: Students must develop problem solving skills in themselves to handle unexpected situations or difficult challenges. So that, they can accurately assess problems and come up with effective solutions.
(ii) Communication Skills: It is when information is exchanged and is understood in the way it was intended.
2. Suppose you get separated from your parents in a crowded market. What steps will you take?
Answer – If I get separated from my parents in a crowded market, then I could take the following steps.
i) The first thing I would do is to remain cool and calm because composing panic can make thing worse, and it can be challenging to think and act rationally.
ii) I can call my parents on their mobile and tell to them a land mark where we can meet.
iii) I can approach nearby announcements centre and make announcement.
Map Skill
On a map of India, locate, label and colour the following:
Arabian Sea.
Indian Ocean.
Northern Plains.
Himalayan mountains.
Deccan Plateau.
Answer –
SOMETHING TO DO
1. Which map of India will be bigger-one drawn to a scale of- 1 centimetre: 100 kilometres or one to a scale of 1 centimetre: 50 kilometres? Why?
Answer – The map drawn with the scale of 1 centimetre: 50 kilometres will be bigger. This is because the actual distance on ground in India will always remain constant. If the map is of scale 1 centimetre: 100 kilometres will indicate 100 kilometres which is a large area in only 1 centimetre.
2. Is the length of all lines of latitudes equal or unequal to each other? Give reasons for your answer. What about the lines of longitudes?
Answer – The length of all lines of latitudes are unequal to each other because they are complete circles and circumference decreases from equator towards the pole remain equidistant from each other. The lines of longitude are of equal length.
3. Take a political map of India. Find out the actual distance between Mumbai and your state. Show it on a scale.
Answer –
4. Take a globe and explain the two motions of earth in front of your class.
Answer – Teacher will do this and afterwards students.
5. Solve the puzzle using the given clues.
Down: (+)
(i) They are caused by the revolution of the Earth on a tilted axis.
Answer – SEASONS
(ii) Spinning around the axis.
Answer – ROTATION
(iii) The imaginary line joining the North and South poles of the Earth.
Answer – LONGITUDE
(iv) A model of the Earth.
Answer – GLOBE
Across:(→)
(v) Movement of the Earth around the Sun.
Answer – REVOLUTION
(vi). The path on which the Earth moves around the Sun.
Answer – ORBIT
(vii) Drawing of earth on a flat surface.
Answer – Map
(viii) Pictures or lines used on maps.
Answer – SYMBOLS
