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GeographyClass 6All

What do the following colours represent? Blue - Red - Yellow - Green - Brown - Black - Purple -

Ans Blue - lakes, rivers, streams, oceans, reservoirs, highways, local borders etc. Red - major highways, roads, urban areas, airports, special interest sites, military sites, place names, buildings, borders. Yellow - built-up or urban areas. Green - parks, golf courses, reservations, forest, orchards, highways. Brown - deserts, historical sites, national parks, military reservations or bases, contour (elevation) lines. Black - roads, railroads, highways, bridges, place names, buildings, borders. Purple - highways (also used on U.S.G.S. topographic maps to represent features added to the map since the original survey).

GeographyClass 6All

How physical maps show the elevations of the features?

Ans Physical maps commonly use colour most dramatically to show changes in elevations. A palette of greens is often used to display common elevations. Dark green usually represents low-lying land with lighter shades of green used for higher elevations. In the higher elevations, physical maps will often use a palette of light brown to dark brown to show higher elevations. Such maps will commonly use red, white or purple to represent the highest elevations on the map.

GeographyClass 6All

Why political maps use more number of colours as compared to physical map?

Ans Political maps, which show more human created features (especially boundaries), usually use more colours than physical maps, which represent the landscape often without regard for human modifications.

GeographyClass 6All

When are sun’s rays direct on the equator?

Ans: Sun’s rays fall directly on the equator on 21st March.

GeographyClass 6All

What is earth day?

Ans: The time taken by the earth to complete one rotation around its axis, i.e., 24 hours is known as earth day.

GeographyClass 6All

What are the two factors responsible for the formation of seasons?

Ans: The combined effect of the Earth's orbital motion and the tilt of its rotation axis results in the season.

GeographyClass 6All

When are sun’s rays direct on the Tropic of Cancer?

Ans: The sun’s rays are direct on Tropic of Cancer on 21st June.

GeographyClass 6All

What is the angle of inclination between earth’s axis and orbital plane?

Ans: The axis of the earth makes an angle of 661/2 ° with the orbital plane.

GeographyClass 6All

Why both hemispheres experience different winter and summer solstice?

Ans: During May, June and July, the northern hemisphere is exposed to more direct sunlight because the hemisphere faces the sun. The same is true of the southern hemisphere in November, December and January. This is due to the tilt of the Earth. So June, July and August are the hottest months in the northern hemisphere and December, January and February are the hottest months in the southern hemisphere.

GeographyClass 6All

What is the relative importance of revolution?

Ans: The seasons are caused due to the revolution of the earth. Due to the change in the position of the earth around the sun, we have different seasons.

GeographyClass 6All

What do you understand by polar day and polar night?

Ans: The polar night occurs when the night lasts for more than 24 hours. This only occurs inside the polar circles. The opposite phenomenon, when the sun stays above the horizon for a long time is called the polar day or midnight sun.

GeographyClass 6All

What do you understand by the term autumn equinox?

Ans: On September 22nd or 23rd in the northern hemisphere, when night and day are nearly of the same length and Sun crosses the equator moving southward. In the southern hemisphere on 20th or 21st March, the autumnal equinox corresponds to the centre of the Sun crossing the equator moving northward.

GeographyClass 6All

Why the southern hemisphere celebrates Christmas in summers?

Ans: On 22nd December, the Tropic of Capricorn receives direct sun rays due to the tilt of South Pole towards it. As the sun rays are vertical on it, it has summers. Hence, Christmas which falls on 25th December is celebrated in summers in the Southern hemisphere.

GeographyClass 6All

Distinguish between summer solstice and winter solstice?

Summer solstice Winter solstice 1) Sun shines vertically on the Tropic of cancer. Sun shines vertically on the Tropic of Capricorn. 2) North pole is inclined towards the sun and the south pole is away from it. South pole is inclined towards the north pole and is away from it. 3) This position is on 21st June. This position is on 22nd December. 4) When the Sun is directly over the Tropic of Cancer in the Northern Hemisphere, it is also known as the northern solstice. When the Sun is directly over the Tropic of Capricorn in the Southern Hemisphere, it is also known as the southern solstice.

GeographyClass 6All

What is grid?

Thus, the system of latitudes and longitudes, along with important lines like the equator and Prime Meridian, helps us understand the Earth’s structure, climate zones, and location of places. This knowledge is very useful in geography, navigation, and daily life.

GeographyClass 6All

What is prime Meridian?

In addition to these, there are imaginary lines like the Earth’s axis, which connects the North and South Poles, and the equator, which runs midway between them. These lines are not visible but are essential for understanding Earth’s rotation and division.

GeographyClass 6All

What are Latitudes & longitudes?

To avoid confusion caused by different local times, countries adopt a standard time based on a particular longitude. In India, the standard time is based on 82°30′ E longitude. This ensures uniformity in time across the country.

GeographyClass 6All

Why is it necessary to have standard time?

The Prime Meridian is another important imaginary line. It passes through Greenwich in England and is marked as 0° longitude. From this line, longitudes are measured up to 180° eastward and westward. It helps in calculating time differences across the world.

GeographyClass 6All

Name the two imaginary lines drawn on the surface of the earth.

Based on latitudes, the Earth is divided into three main heat zones. The Torrid Zone

GeographyClass 6All

Explain the important parallels of latitudes?

lies between the Tropic of Cancer and Tropic of Capricorn and is the hottest region because it receives direct sunlight. The Temperate Zones lie between the tropics and the polar circles in both hemispheres. These regions have moderate temperatures because the Sun’s rays fall at a slant. The Frigid Zones lie beyond the Arctic and Antarctic Circles and are extremely cold because they receive very little sunlight.

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