Answer briefly
1. Define the following.
(a) Constellation
(b) Satellite
(c) Galaxy
(d) Light year
2. Why do stars appear to move from east to west?
3. Name the constellation that looks like a hunter
Answers
CONSTELLATION :
A constellation is a group of stars that make an imaginary shape in the night sky. They are usually named after mythological characters.
SATELLITE :
An electronic device that is sent into space and moves around the earth or another planet for a particular purpose.
GALAXY :
A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter.
LIGHT YEAR :
The light-year is a unit of length used to express astronomical distances and measures about 9.46 trillion kilometres or 5.88 trillion miles.
2.Earth rotates or spins toward the east, and that's why the Sun, Moon, planets, and stars all rise in the east and make their way westward across the sky.
3. Orion is the constellation that look like a hunter.
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Answer:
1.a)Constellation :- A group of stars that forms any shape or pattern to resemble a person or object is called constellation.
b)Satellite :- A satellite is an object in space which revloves around planets
c)Galaxy :- Galaxy is a large area, particularly dust, stars and gas that makes up a universe.
d)Light year :- A year is the distance that light travel in empty space in one year
2. As due to the rotation of earth stars appear to move from west to east. So, stars appear to move from west to east.
3. Hunter constellation is also known as orion constellation.