Tag: properties of stars

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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

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.

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

The following is (are) true about Sun.

  1. It is made up of gases

  2. It has its own heat and light

  3. Sun is a star

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

The sun is a big ball of gas and plasma. Most of the gas 91 percent is hydrogen. It is converted into energy in the sun's core. The energy moves outward through the interior layers, into the sun's atmosphere, and is released into the solar system as heat and light.