Tag: movement of the earth

Quizzes (2) Questions (40)

Questions Related to movement of the earth

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

Which is the part of sun where the energy is transported from superhot interior to cold outer layers by photons?

  1. Core

  2. Radiative Zone

  3. Convective zone

  4. None
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Radiative zone lies between the core and the convective zone. In radiative zone, energy resulted from the nuclear fusion in the core travels upwards by photons.

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

Sunspots on the photosphere are due to.

  1. Eclipses caused by planets

  2. Comparatively cooler regions

  3. Granulation's

  4. Cloudy weather on the earth
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sunspots are temporary phenomenon on the sun photosphere that appears as spots darker than the surrounding area.

They are regions of reduced surface temperature. 
Answer is $B$

Multiple choice physics life cycle of stars movement of the earth properties of stars types of galaxies

Mass (in kg) of the massive object at the centre of the milky way galaxy is of the order.

  1. $10 ^ { 32 }$

  2. $10 ^ { 37 }$

  3. $10 ^ { 43 }$

  4. $10 ^ { 29 }$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The supermassive black hole at the center of the Milky Way, Sagittarius A*, has a mass estimated to be approximately 4 million solar masses. One solar mass is about 2 x 10^30 kg, so 4 x 10^6 * 2 x 10^30 = 8 x 10^36 kg, which is of the order 10^37.

Multiple choice physics life cycle of stars movement of the earth properties of stars types of galaxies

A galaxy that is moving toward the Earth will show:

  1. a red shift in the spectrum

  2. an increase in light years

  3. a decrease in brightness

  4. a blue shift in the spectrum
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

As galaxy move towards the earth the wavelength decreases and the frequency increase and colour changes to blue and also known as blue shift while opposite is known as red shift.

Multiple choice physics life cycle of stars movement of the earth properties of stars types of galaxies

The red shift in the spectral lines of light reaching us from other galaxies implies that these galaxies:

  1. are moving closer to one another

  2. are moving farther apart from one another

  3. consist predominantly of red giant stars

  4. are in rapid rotation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The red shift occurs due to increase due to increase in wavelength that would be due to the increasing distance between two galaxies, Red shift indicate that galaxy are mainly farther apart from one another