physics

2. Which is the largest asteroid & what is it diameter?
C e r e s , 1 0 0 3 k m
Comets revolve around whom?
s u n
To which direction does the tail of a comet points when it approaches the
sun?
I t p o i n t s a w a y f r o m t h e s u n
Does a comet size increase as it moves away from the sun?
N o
What is the time period of Halley’s comet?
76 years
Who discovered Halley's comet ?
E d m u n d H a l l e y
In which year Halley's comet appeared last?
I n 1 9 8 6
In which year Halley's comet will again appear?
In 2062
Does a comet have more than a tail?
y e s

3. The rock that lie in the space?
A s t e r o i d s
Name the level of earth atmosphere, where most part of the meteor gets
burn away?
M e s o s p h e r e
Name one crater formed by a meteorite?
T h e b a r r i n g e r c r a t e r i n A r i z o n a
Name worlds first artificial satellite & when did it sent to space?
S p u t n i k - I , O c t o b e r / 4 / 1 9 5 7
Name the first satellite launched by America ?
V a n g a r d - I ( 1 9 5 8 )
When did the first Indian satellite launched?
O n m a r c h 1 9 7 5 ( a r y b h a t t a )
Which satellite was renamed after kalpana chawla?
M e t s a t ( 1 2 S e p t e m b e r 2 0 0 2 )
What you mean by remote sensing?
I t m e a n s c o l l e c t i n g i n f o r m a t i o n f r o m a
d i s t a n c e . i t i s u s e d f o r l o c a t i n g m i n e r a l s &
s t u d y i n g a g r i c u l t u r a l y i e l d .
Who termed the idea of Big Bang?
G e o r g e r L e m a i t r e