ESS
Grade-9
Easy
Question
The spectral class of a star is linked to its________.
- Luminosity
- Radius
- Temperature
- Mass
Hint:
The spectral class of the stars is linked to their temperature sequence.
The correct answer is: Temperature
- The spectral class of the stars depends on their temperature sequence.
- The seven types of stars are arranged as cooler to hotter from O to M stars.
- The color and the luminescence of the stars are decided by their temperature.
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A star with an initial mass of 8 to 25 solar masses will eventually turn out to be a _________.
A star with an initial mass of 8 to 25 solar masses will eventually turn out to be a _________.
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When the Sun reduces its current core fuel, it will turn out to be a _______________.
When the Sun reduces its current core fuel, it will turn out to be a _______________.
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________ has the largest range in brightness and surface temperature.
________ has the largest range in brightness and surface temperature.
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Nova is a ____________.
Nova is a ____________.
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After full use of hydrogen the red giant becomes________.
After full use of hydrogen the red giant becomes________.
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Which of the following is the feature of white dwarf star?
Which of the following is the feature of white dwarf star?
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________ has the lowest density.
________ has the lowest density.
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_______ is the major fuel consumed in the core of a red giant.
_______ is the major fuel consumed in the core of a red giant.
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Match the following
| Name of the star |
Color of the star |
| 1. Rigel |
a. Orange dwarf |
| 2. Sirius B |
b. Blue supergiant |
| 3. Betelgeuse |
c. White dwarf |
| 4. Epsilon Indi |
d. Red supergiant |
Match the following
| Name of the star |
Color of the star |
| 1. Rigel |
a. Orange dwarf |
| 2. Sirius B |
b. Blue supergiant |
| 3. Betelgeuse |
c. White dwarf |
| 4. Epsilon Indi |
d. Red supergiant |
ESSGrade-9
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Most stars end their lives as ________.
Most stars end their lives as ________.
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_________ stops a white dwarf from totally collapsing upon itself.
_________ stops a white dwarf from totally collapsing upon itself.
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A swiftly rotating neutron star is known as a ____________.
A swiftly rotating neutron star is known as a ____________.
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In which type of model are the Sun, other stars, and the Moon in orbit around the Earth?
In which type of model are the Sun, other stars, and the Moon in orbit around the Earth?
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Which visible motion can be explained by a geocentric model?
Which visible motion can be explained by a geocentric model?
ESSGrade-9
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Which of the following statement is correct?
Which of the following statement is correct?
ESSGrade-9
