UNIVERSE
METEORS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
The speed the Comet is going at and its icy trail
|
|
|
The rock structure of the Comet
|
|
|
The amount of rock that the Comet has
|
|
|
The solar flares that the Earth’s atmosphere projects off
|
Detailed explanation-1: -We can see a number of comets with the naked eye when they pass close to the sun because their comas and tails reflect sunlight or even glow because of the energy they absorb from the sun.
Detailed explanation-2: -As the comet approaches the Sun, its height falls and the difference in gravitational potential energy will be converted into kinetic energy. Hence a comet will be travelling fastest at its perihelion (i.e. when it is closest to the Sun).
Detailed explanation-3: -The streams of dust and gas released from the comet form a huge, extremely tenuous atmosphere around the comet called the coma, and the force exerted on the coma by the Sun’s radiation pressure and solar wind cause an enormous tail to form, which points away from the Sun.