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When we see moon’s bright side totally, we call it hill moon.

1. meteoroids: When they enter the earth’s atmosphere, they bum up in the atmosphere due to friction and a streak of light is produced.

2. Asteroids: Most of them are located between the orbits of Mars and Jupiter.

3. Comets: A comet is an icy body that gives out gas or burnt. They revolve around the sun.

The moon has no light of its own, hence it reflects the light from the sun, its position in relation to the sun changes from night tonight. As a result, we have the phase of the moon.

All the objects that we can see in the sky are called celestial bodies.

An imaginary line is drawn around the Earth is called the equator.

1. b 

2. c 

3. e 

4. a 

5. d

1. The Earth is a unique planet

2. The fifth-largest planet in our solar system is the Earth.

From the day following the new moon to that of the lull moon the lit up portion of the moon gradually increases. This change is known as waxing.

The amount of time it takes one planet to make a frill orbit around the sun is considered a year, Here on Earth. One year equals 365.24 days. Planets closer to the sun complete their orbits fester than planets farther away Neptune is farther out than Mars, so it takes longer to orbit.

Mercury has the shortest orbital period of any planet in the solar system, completing a trip around the sun every 88 days. It is the smallest of the eight planets, as well as the closest to the sun.

In order to solve the problem of time, which travels around the world, 180 meridians is taken as the International Dateline.

The nautical date line, not the same as the IDL, is a de jure construction determined by international agreement. It is the result of the 1917 Anglo-French Conference on Time-keeping at Sea, which recommended that all ships, both military and civilian, adopt hourly standard time zones on the high seas.

The latitude and the longitudes intersect each other right angles and provide coordinate points. They form a grid. Such a grid is known as geographic coordinates.

The northern half of the earth is called the northern hemisphere. The Southern half of the earth is called the southern hemisphere.

The rotation of earth causes day and night.

The sun is closer to the Earth than any other bigger stars.

1. The sun is made up of Hydrogen and helium gases

2. The sun is the source of light and heat.

1. The direction where the sun appears to rise is called east

2. The rotation of Earth causes day and night

(a) Winter solstice

Correct answer is (c) Star

Correct answer is (a) Earth

Correct answer is (d) Venus

Correct answer is (d) Midday

Ones in 4 years, we have 366 days in a year is called a leap year.

The latitude that passes through Green wich in England is called the prime meridian or Green wich meridian.

(a) 82 1/2 E meridian