Tag: properties of stars

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Questions Related to properties of stars

Multiple choice physics movement of the earth properties of stars life cycle of stars solar system and its planets types of galaxies galaxies

Why is the Sun important for us?

  1. It is the main source of light and heat.

  2. It is the source of energy.

  3. Its gravitational force keeps all planets and other heavenly bodies in place.

  4. All of the above.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sun is very important to us as it is the main source of light and heat, i.e, the main source of energy. Besides, its gravitational force keeps all planets and other heavenly bodies in place.

Multiple choice physics movement of the earth properties of stars life cycle of stars solar system and its planets types of galaxies galaxies

Why does sun appear larger than other stars to us?

  1. It is larger than other stars.

  2. It is farther than other stars.

  3. It is closer than other stars.

  4. It is faster than other stars.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Sun is much closer to us as compared to other stars. Hence, it subtends larger angle at eyes compared to other stars and appear larger. Note that many stars are much larger than sun in size.

Multiple choice physics movement of the earth properties of stars life cycle of stars solar system and its planets types of galaxies galaxies
Inside the Sun, _______ reactions take place at high temperature and enormous pressure. Fill in the blank

  1. nuclear fusion

  2. nuclear fission

  3. catalyze

  4. none of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Nuclear fusion means merging of separate elements as a unified whole to form heavy nuclei resulting in release of enormous amount of energy.

Multiple choice physics movement of the earth properties of stars life cycle of stars solar system and its planets types of galaxies galaxies

From which part of Sun does the energy from nuclear fusion is generated?

  1. Core

  2. Radiative Zone

  3. Convective Zone

  4. From both B and C
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Central region of the Sun is called the core. Core is where the nuclear reaction takes place. 

Core is the region where the energy from nuclear fusion is generated.