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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.

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

What are known as Sun Spots?

  1. Cooler regions on photosphere

  2. Hotter regions on photosphere

  3. Cooler regions on stratosphere

  4. Hotter regions on stratosphere
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Spots formed on the surface of the Sun that are darker and cooler are called the Sun's spots.

They may differ in size from small to large also.

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

What is the Sun made of?

  1. 94% hydrogen, 6% helium, 0.16% other materials

  2. 94% hydrogen, 6% helium, 0.13% other materials

  3. 99% hydrogen, 6% helium, 0.11% other materials

  4. 94% hydrogen, 6% helium, 0.11% other materials
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sun is a large mass of gases. Two prominent gases forming the Sun are hydrogen and helium. Other gases such as carbon, nitrogen forms the trace amount.

The sun is made of 94% hydrogen, 6% helium, 0.16% other materials.