GK
THE UNIVERSE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
an interstellar cloud of dust, hydrogen, helium and other ionized gases
|
|
|
an increase (or decrease) in the frequency of sound, light, or other waves
|
|
|
the galaxy that contains our Solar System
|
|
|
a particle attracts every other particle in the universe
|
Detailed explanation-1: -A nebula is an interstellar cloud of dust and other ionized gases resulting from the explosion of a star. Nebulae are clouds made up mainly of hydrogen gas and dust particles.
Detailed explanation-2: -Nebulae are interstellar clouds of gas and dust. Many nebulae are formed from the remnants of dying stars. Nebulae are often also regions where new stars are born. Nowadays, the term ‘nebula’ refers to an interstellar cloud of dust and gas.
Detailed explanation-3: -Named after the Latin word for “cloud”, nebulae are not only massive clouds of dust, hydrogen and helium gas, and plasma; they are also often “stellar nurseries” – i.e. the place where stars are born.
Detailed explanation-4: -What is an interstellar cloud made of? Interstellar clouds are made up of mostly hydrogen and helium gas, but also dust and plasma. They can vary in density, temperature, and size.