Stars and Solar System

CLASS-VIII

STARS AND SOLAR SYSTEM

ASSIGNMENT-8

Q1. Fill in the blanks:

a)    A celestial body that revolves around a planet is known as ______________ while that revolving around a star is called a _______________.

b)    Asteroids are found between the orbits of ____________ and _____________.

c)     Alpha centauri is at a distance of ______ light years from the earth.

d)    One A.U. = _____________m.

e)     The temperature on the moon varies from ________ at noon to _______ at night.

f)      A day on mercury equals nearly _____ earth days.

g)    One ‘Jupiter Year’ equals nearly ______ earth years.

h)    The tail of a comet is always directed ________ from the sun.

Q2. Name any 3 artificial Indian satellites.

Q3. Give the other name of meteors.

Q4. Name the astronauts who landed on moon in 1969.

Q5. Name the two bright stars present in Orion constellation.

Q6. List 3 conditions which help in sustaining life on Earth.

Q7. Draw a labelled diagram to show the position of the earth in different seasons.

Q8. What do you understand by the statement that a star is 8 light years away from the Earth?

Q9. Draw sketches to show the relative positions of prominent stars in

a)    Ursa Major

b)    Orion

Q10. Name the inner planets and the outer planets of the solar system.