8.9 A Check #1

What is the first stage in the life cycle of a star?

• Red Giant

• Main Sequence

• Nebula

• White Dwarf

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TEKS.SCI.8.9A

Which of the following best describes the Hertzsprung-Russell diagram?

• A chart that shows the life cycle of planets

• A graph that plots stars based on their brightness and temperature

• A diagram that illustrates the phases of the moon

• A map of the solar system

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TEKS.SCI.8.9A

How does a star's position on the Hertzsprung-Russell diagram change as it evolves from a main sequence star to a red giant?

• It moves downwards and to the left

• It moves upwards and to the right

• It remains in the same position

• It moves downwards and to the right

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TEKS.SCI.8.9A

What is the primary factor that determines the life cycle path of a star?

• Its distance from Earth

• Its initial mass

• Its color

• Its age

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TEKS.SCI.8.9A

Compare the characteristics of a white dwarf and a red giant.

• A white dwarf is hotter and smaller, while a red giant is cooler and larger.

• A white dwarf is cooler and larger, while a red giant is hotter and smaller.

• Both are the same size and temperature.

• A white dwarf is larger and hotter, while a red giant is smaller and cooler.

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TEKS.SCI.8.9A

What is the final stage of a low-mass star's life cycle?

• Black Hole

• Neutron Star

• White Dwarf

• Red Supergiant

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TEKS.SCI.8.9A

Explain how the color of a star is related to its temperature.

• Cooler stars are blue, and hotter stars are red.

• Cooler stars are red, and hotter stars are blue.

• All stars are the same color regardless of temperature.

• Color does not relate to temperature.

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TEKS.SCI.8.9A

Which of the following stars is likely to be the brightest on the Hertzsprung-Russell diagram?

• A red dwarf

• A white dwarf

• A blue supergiant

• A yellow main sequence star

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TEKS.SCI.8.9A

Describe the process that occurs when a star becomes a supernova.

• The star gradually cools and shrinks.

• The star's core collapses and then explodes, releasing a vast amount of energy.

• The star slowly fades away without any explosion.

• The star splits into two smaller stars.

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TEKS.SCI.8.9A

What type of star is our Sun classified as on the Hertzsprung-Russell diagram?

• Red Giant

• White Dwarf

• Blue Supergiant

• Yellow Main Sequence

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TEKS.SCI.8.9A