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Ø  Tropic of Capricorn ( 23 ½ °S)

Ø  Artic of circle ( 66 ½ °N)

Ø  Antarctic Circle ( 66 ½ °S)

The Heat Zones:

Ø  Torrid Zone receives the maximum heat.

Ø  Temperate zone has moderate temperature.

Ø  Frigid Zone has cold climate as the sun rays are always slanting.

Longitudes:

·         The line of reference running from the North Pole to the South Pole is called Meridian of Longitude.

·         The distance between them are measured in “Degrees of Longitude”.

·         All meridians are of equal length.

·         The meridian which passes through Greenwich, where the British Royal Observatory is located is called the Prime Meridian.

Ø  The value of Prime Meridian is 0° longitude and from it we count 180° Eastward as week as 180°

Westward.

Ø  Prime Meridian divides the earth into two equal halves, the Eastern Hemisphere and the western Hemisphere.

Ø  180° East and West meridians are on the same line.

Ø  We can locate any point of the globe if we know its latitude and longitude.

Ø  As the earth rotates from West to East, those places East of Greenwich will be ahead of Greenwich Time and those to the West will be behind it.

Ø  The earth rotates 360 ° In about 24 hours

Ø  At any place a watch can be adjusted to read 12 O’clock when the sun is at the highest point in the sky.

Ø  India located East of Greenwich at 82° 30’E, is 5 hours and 30 minutes ahead of GMT.

Ø  82° 30’E is treated as the Standard Meridian of India. The local time at this meridian is known as the Indian Standard Time(IST)

Ø  Inner planets: The inner planets are the planets that orbit around the Sun between the Sun and the Asteroid belt, that is are close to the sun. These are Mercury, Venus, Earth and Mars.

Ø  Outer planets: The Outer Planet are the planets that orbit the sun beyond the asteroid belt, that is, are very far away from the sun.  These are Jupiter, Saturn, Uranus and Neptune.

Ø  THE SUN: The Sun is a star that acts as the “Head” of the solar system and around which all planets revolve.  Note that the Sun is not at the centre of the orbit.

No	Name of Planet	No of days it takes to Orbit around the SUN
1	Mercury	88 days
2	Venus	255 days
3	Earth	365 days     it has One moon
4	Mars	687 days  - It has 2 Moons
5	Jupiter	11 years and 11 months—It has 16 Moons
6	Saturn	29 years and 5 months --- 18 Moons
7	Uranus	84 Years----- 17 moons
8	Neptune	165 years --- 8 moons
9	Pluto	A dwarf planet
10	New Planet	2003 UB313

Day one test:

Q.No:	QUESTIONS	Your Answer
1	The planet known as the Earth’s Twin is_____
2	Which is the third nearest planet to the sun?
3	All the planets move around the sun in a ___Path
4	The Pole star indicates the direction  to the _____
5	Asteroid are found between the orbits of ___
6	A group of _____ forming various patterns is called a_______
7	A huge system of starts is called_______
8	_____ is closest celestial body to our earth.
9	Planets do not have their own ___ and _____
10	Write the name of all the planets in our solar system from nearest to sun to the furthest
11	Purnima is the day when Moon is________
12	Saptarishi  (Big Bear) is a group of
13	Which star points to North
14	Planet earth is also called the ____ Planet
15	The Small Bear Constellation is better known as the___
16	____ are elongated fixed paths in which a celestial  body always remains
17	Meteoroids heat up and burn due to____
18	Stars are celestial  bodies that are ____and____
19	Three planets having rings around them are____, ____ & ___
20	The shadows on the moon’s surface are due to ____ & ____
21	The planets do not possess their own ____ and _____
22	The Greek Word which is the origin of the word “Planets” mean
23	The Sun is about ____ million km away from earth
24	Pluto was declared a “Dwarf Planet” in Aug 2006 ( True / False)
25	Saptarishi and Ursa Major are two different Constellation (T/F)
26	The earth moves around its_______
27	Latitudes are measured in ________
28	Tropic of Cancer is_________ Degree _____
29	The value of the Prime Meridian is________ Degrees
30	The total number of Longitudes are_______