UNIVERSE
METEORS
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
gravity; friction
|
|
friction; vaporization
|
|
gravity; vaporization
|
|
centrifugal force; friction
|
Detailed explanation-1: -When a meteoroid enters Earth’s upper atmosphere, it heats up due to friction from the air. The heat causes gases around the meteoroid to glow brightly, and a meteor appears.
Detailed explanation-2: -Friction can produce heat. This can be observed if you rub your palm against each other. Likewise, when a meteorite enters the earth’s atmosphere, the air applies a frictional force against the motion of the meteorite. Due to this frictional force, heat is produced and the meteor starts burning.
Detailed explanation-3: -Meteors start burning on entering the earth’s atmosphere because of frictional force, which is caused due to the atmosphere of earth.
Detailed explanation-4: -Although most meteors are very small, they travel at great speed and have a large amount of kinetic energy. As they enter the Earth’s atmosphere, they transfer kinetic energy to heat by friction. As they heat up, some of the energy is changed to light energy, forming the appearance of a shooting star.