Physics Annual Examinations For Secondary Schools Form 5 - Directorate For Quality And Standards In Education, 2012 Page 8

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9.
This question is about the Earth and the Universe
a.
Complete the following:
i.
A natural mass in outer ____________ is referred to as a celestial body.
ii.
The three main types of celestial bodies are Stars, ____________ and ____________.
iii.
The force keeping the planets in orbit around the Sun is the pull of ____________
provided by the _____________.
(5)
b.
Name:
i.
a star
_______________
ii.
the natural satellite of the Earth
_______________
iii.
a celestial body orbiting the Sun.
_______________
(3)
th
c.
On August 24
2006 the General Assembly of the International Astronomical Union
defined a planet as a celestial body which orbits the Sun, is nearly round and has its orbit free
of other masses.
i.
How many major planets orbit the sun in our solar system?
_______________
ii.
Name the celestial body in our solar system, which recently has no longer been
classified as a major planet.
_______________
iii.
This celestial body is now classified as a _______________ planet.
iv.
State the reason why this celestial body is no longer classified as a major planet.
______________________________________________________________________
(5)
d.
State whether each of the following statements are True or False.
No.
Statement
True / False
i
The Earth spins on its own axis once every 12 hours.
ii
Only half of the Earth faces the Sun at any one time.
The universe is made up of a number of galaxies.
iii
iv
The Sun is one of the millions of stars in the Milky Way galaxy.
The force of attraction between two planets increases as the
v
distance between the planets decreases.
vi
All parts of Earth have the same season at the same time of the year.
The Sun orbits the Earth.
vii
(7)
Physics – Secondary Schools – Track 3 - Form 5 – 2012
Page 8 of 12

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