EXERCISES
Answer the following questions briefly.
How does a planet differ from a star?
(B) What is meau isy the 'Solar System"?
(C) Name all the planets according to their distance from the sun.
(D) Why is the Earth called a unique planet?
Why do we see only one side of the moon always?
What is the Universe ?
Answers
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a) STARS :
★ They are having lustres .
★ They are uncountable .
★ They are made up of dust and gases.
★ They twinkle at night .
★ Example - The Sun is the nearest star to the earth .
PLANETS :
★ They are not lustrous.
★ There are 8 planets in our Solar System .
★ Some of them are made up of gases and some of rocks .
★ They do not twinkle at night.
★ These plantes are : Mercury, Venus , Earth, Mars, Jupiter, Saturn , Uranus and Neptune .
b) The collection of eight planets and their moons in orbit round the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets.
c) mercury
Venus
earth
Mars
Jupiter
Saturn
Uranus
Neptune
Pluto (drawf planet)
d) it is called a unique planet because it has all life accuracy features which other planets do not have.. that is, air, water, fire, and land. only with this features, people can survive on this planet.
e)Only one side of the Moon is visible from Earth because the Moon rotates on its axis at the same rate that the Moon orbits the Earth – a situation known as synchronous rotation, or tidal locking. The Moon is directly illuminated by the Sun, and the cyclically varying viewing conditions cause the lunar phases.
f) The universe (Latin: universus) is all of space and time and their contents, including planets, stars, galaxies, and all other forms of matter and energy.
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Answer:
Here is the your answer
Explanation:
Answers:
A. A sunora star is a large body consisting of mainly hydrogen and helium. the fusion reaction gernate lot of energy which make a star shine .planet heavenly object that move around the sun in a fixed path . they shine high and hot because plants are differ from a Stars.
B. The family of sun and it's eight planets are known as solar system.
C. Mercury - 57 million kilometer
Venus - 108 million kilometer
Earth - 150 million kilometer
Mars - 228 million kilometer
Jupiter - 779 million kilometer
Saturn - 1. 43 billion kilometer
Uranus - 2.88 billion kilometer
Neptune - 4.5 billion kilometer
it is distance between sun to all planets
D. The Earth is only planet our solar system that that has a large amount of liquid water. About 74% . because people something call it blue planet . it's reason Earth are called unique planet.
E. only one side of moon is visible from Earth because the Moon rotates on its axis at at the same rate that the moon orbits the Earth.
F. Universe is all space and time and their contents, includes plants, star , galaxies and all other forms of matter and energy.
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