Chapter-1
KNOWING OUR PLANET
1:- Write the name of aplanet of solar system where life exists.
Ans:- Earth
2:- What is the shape of earth?
Ans:- The shape of earth is sphere.
3:- Why can we not see the whole earth at a time?
Ans:- We cannot see whole earth at a time because the earth is spherical in shape.
4:- What is globe?
Ans:-A round shaped model that is used to study about the earth is called globe.
5:- How many oceans in the world? Name them.
Ans:- There are five oceans in the world.
1-Pacific ocean
2-Atlantic ocean
3-Indian ocean
4-Antarctic ocean
5-Arctic ocean
6:- Which is the largest ocean of the world?
Ans:- Pacific ocean
7:- Which is the smallest ocean of the world?
Ans:- Arctic ocean
8:- Which is known as southern ocean?
Ans:- Antarctic ocean
9:- How many Continents in the world? Name them.
Ans:- There are seven continents in the world.
1-Asia
2-Africa
3-North America
4-South America
5-Antarctica
6-Europe
7-Australia
10:- Which is the largest continent in the world?
Ans:- Asia
11:- Which is the smallest continent in the world?
Ans:- Australia
12:- Who is the seventh largest country of the world?
Ans:- India
13:- Who is the largest country of the world?
Ans:- Russia
14:- Who is the smallest continent of the world?
Ans:- Vatican city
15:- What is the importance of globe?
Ans:- Globe is used to see the correct location , size and shape of various continents, oceans and island.
16:- Write three limitations about the globe.
Ans:- The three limitations about the globe are
1-We cannot see all the details of a place on a globe.
2-We can see only a side of the earth on globe at atime.
3-We cannot carry a globe everywhere easily.
17:- What is map?
Ans:- Map is a drawing of the whole or a part of the earth, drawn on a flat surface. It helps us to know details related to various parts of the earth.
18:- Who was the first man who publish a set of map in the form of a book?
Ans:- Gerardus Mercator
19:- What is atlas?
Ans:-An atlas is a book of collection of various maps of the earth or a specific region of the earth.
20:- Write three advantages of map.
Ans:-The three advantages of map are
1-A map helps us to locate and understand any place.
2-Maps can provide the location of our school, home, city, country or the world.
3-A map is easy to carry anywhere.
21:- How many kinds of map? Name them.
Ans:- There are two kinds of map.
1-Physical map
2-Political map
22:-What are physical maps?
Ans:- Those maps that show the location of different landforms like rivers, oceans, deserts, plateaus are called physical map.
23:- What are political maps?
Ans:- Those maps that define the boundaries of countries, states and their capitals are called political maps.
24:- What is language of map?
Ans:- We read a map with the help of directions, scales, signs, symbols, and colours given in it. All these together are called the language of map.
25:- How can we know direction on a map?
Ans:- A map has the north direction at the top and south direction at the bottom.The east direction is on our right hand side and the west direction on our left hand side.There is an arrow on the top of the map with letter 'N' that shows the north direction. Map also works on four Sub-directions. These Sub-directions are North- East, North-West, South-East and South-West.
26:- How can a scale helps to draw a map? Explain.
Ans:- A scale shows the ratio between the distance on the real earth and the distance on the map.
For example:- if we can assume one centimeter for one hundreds kilometers. this way 200 km will be 2 cm on the scale of the map.
27:- What is the use of signs and symbols in a map.
Ans:- Signs and symbols are used to show different landforms and water bodies on the map.
For example:- A state boundry is shown by green lines and dots
An international boundry is shown by red lines and dots.
28:- What is the use of different colours in map?
Ans:-Different colours show different things on a map.
For example:- High lands are shown by brown colours.
Low lands and plains are shown with green colours.
Shallow water is shown by light blue coloure.
Deep water is shown by dark blue colour
29:- Why is map key important in a map?
Ans:- Map keys are generrally boxes in the corner of map . They give us important information that is essential to understand the map.
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