Transcript Nava cosmică îşi ia zborul sau aterizează?

Is the spaceship
taking off or
landing?
1
A spaceship flies around the
Earth with a velocity of 10
rotations per day. The captain
wants to increase the velocity to
12 rotations per day.
What must the spaceship
commander do?
Accelerate or stop?
2
3
Is it possible to cover a star with a
match held in your hand with your arm
stretched?
4
In 1860 a meteorite fell in
India.
After drawing a trace of fire
on the sky, the incandescent
object fell in a swamp.
At the crash site, the
witnesses found a block of
ice.
How do you explain this
paradox of nature?
5
A plane flies at
supersonic speed.
The pilot is situated
in the carling, in front
part of the fuselage
(point A). The
engines are located
on the wings (in
points B and C).
A
•E
B
•D
C
Can the pilot hear the sound of his plane?
Jupiter, the largest planet
of the Solar System,
deviates or attracts with
his huge gravitational
force the objects that
could hit the Earth?
6
Kevin Grazier, NASA: Jupiter increases the danger
„In our simulations, Jupiter is responsible for most of the
collisions between the different types of cosmic waste and Earth.
Instead of acting as a shield, Jupiter was, in fact, the sniper
shooting the Earth”, said Grazier.
7
In 1851, Foucault, using a vertical
pendulum, proved the fact that the
Earth is rotating around its own
axis. The pendulum was a 67m
long string, having attached a 28 kg
ball, designed with a pointed top.
How do you think he managed to
do this?
Pantheon, Paris