Worksheet Solution: The Earth-Our World - Notes | Study Social Studies for Class 5 - Class 5

Answer the following questions in brief:

Question 1: Who sailed round the earth to prove that it is round and not flat?

Ferdinand Magellan sailed round the earth to prove that it is round and not flat.

Question 2: What is a ‘grid’?

The lines of latitudes and longitudes crisscross and form a network of lines on the globe and map. This is called a grid.

Question 3: Which imaginary line divides the earth into two hemispheres?

The Equator, or line of 0 degrees latitude, divides the Earth into the Northern and Southern hemispheres.

Question 4: In what ways are maps different from a globe?

A globe is a three-dimensional sphere while a map is two-dimensional. The globe represents the whole earth, whereas a map may represent the whole earth or just a part of it. A globe can be used to get a broad-level picture of the world while maps provide more specific information about different places.

Fill in the blanks

Question 5:

• Man first landed on moon on On July 20, 1969.
• In the continent of Antarctica no man has permanent home.
• Our earth is more like an ellipsoid than a sphere.
• The Ural mountain separates Asia from Europe.

EduRev Tips:

• July 20, 1969, American astronauts Neil Armstrong (1930-2012) and Edwin "Buzz" Aldrin (1930-) became the first humans ever to land on the moon. 
• In the continent of Antarctica no man has a permanent home.
• The Earth is an irregularly shaped ellipsoid.While the Earth appears to be round when viewed from the vantage point of space, it is actually closer to an ellipsoid.
• The Urals rise like a long and narrow spine across western Russia, forming a natural divide between Europe and Asia.

True & False

Question 6:

• The earth is a heavenly body. True 
• The continent of Australia is made up entirely of islands. True 
• All countries are parts of some continent. False
• Oceans are large bodies of water. True

EduRev Tips:

• A natural celestial object, visible in the sky, such as a star, planet, natural satellite, asteroid, comet, the Moon or the Sun. Objects flying or moving in the atmosphere are not usually considered as heavenly bodies.
• At about 3 million square miles (7.7 million square km), Australia is the smallest continent on Earth.Although Australia is sometimes called an “island continent,” most geographers consider islands and continents to be separate things.
• While most areas of the world belong to specific continents, not all do, especially island countries or regions dominated by water. Australia is actually the only country that is also a continent, but not all countries have to be a part of a continent.
• A body of water or waterbody is any significant accumulation of water, generally on a planet's surface.

Look at the globe and answer the following:

Question 8: Which of the two hemispheres has greater land area?

Currently, the greatest amount of land mass is situated in the Northern Hemisphere. In fact, five of the Earth's seven continents are fully or partly located in the Northern Hemisphere.

Question 9: Which two continents are spread over both hemispheres?

Europe and Antarctica are the two continent spread over the both hemisphere.

Question 10: Why does the level of water in all the oceans remains the same?

Because the ocean is one continuous body of water, its surface tends to seek the same level throughout the world. However, winds, currents, river discharges, and variations in gravity and temperature prevent the sea surface from being truly level.

Question 11: Which continent lies only in the southern hemisphere?

The Southern Hemisphere contains most of South America, one-third of Africa, Australia, Antarctica, and some Asian islands.

Question 12: Which ocean surrounds the continent of Antarctica?

The Southern Ocean encircles Antarctica, and its area is usually defined as extending from the edge of the continent (and its ice shelves) to the position of the 'polar front' separating it from the surrounding Pacific, Indian and South Atlantic Oceans.