Spacw And Behond

Question 1

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

Answer 1

Nebula

Question 2

True or False: A star is formed when a nebula collapses under its own gravity.

Answer 2

True

Question 3

What process occurs in the core of a star during its main sequence phase?

Answer 3

Nuclear fusion of hydrogen into helium

Question 4

Fill in the blank: The life cycle of a star depends primarily on its _______.

Answer 4

Mass

Question 5

Which type of star will eventually become a red giant?

Answer 5

A medium-mass star

Question 6

What happens to a low-mass star after it exhausts its hydrogen fuel?

Answer 6

It becomes a red giant and then sheds its outer layers to form a planetary nebula.

Question 7

True or False: Massive stars end their life cycle as white dwarfs.

Answer 7

False

Question 8

What is the final stage of a massive star’s life cycle?

Answer 8

Supernova

Question 9

Multiple choice: What is formed after a supernova explosion?

Answer 9

Neutron star or black hole

Question 10

What is a white dwarf?

Answer 10

The remnant core of a low to medium-mass star after it has shed its outer layers.

Question 11

Fill in the blank: The _______ is the region around a star where nuclear fusion occurs.

Answer 11

Core

Question 12

What stage follows the red giant phase for a medium-mass star?

Answer 12

Planetary nebula

Question 13

True or False: All stars will eventually become black holes.

Answer 13

False

Question 14

What is the Hertzsprung-Russell diagram used for?

Answer 14

To classify stars based on their luminosity and temperature.

Question 15

What is a supernova?

Answer 15

A powerful and luminous explosion that occurs at the end of a massive star’s life.

Question 16

Multiple choice: Which type of star is the hottest and most luminous?

Answer 16

O-type star

Question 17

What happens during the main sequence phase of a star’s life?

Answer 17

The star fuses hydrogen into helium in its core.

Question 18

Fill in the blank: After a star has exhausted its nuclear fuel, it may become a _______ or a black hole.

Answer 18

Neutron star

Question 19

What is the significance of a star’s mass in its life cycle?

Answer 19

It determines the star’s evolution, lifespan, and end state.

Question 20

True or False: The fusion of heavier elements occurs in the cores of massive stars.

Answer 20

True

Question 21

What is the main characteristic of a red giant?

Answer 21

It has expanded and cooled, resulting in a reddish appearance.

Question 22

What forms when a star like our Sun exhausts its nuclear fuel?

Answer 22

A white dwarf

Question 23

Multiple choice: Which phase lasts the longest in a star’s life cycle?

Answer 23

Main sequence phase

Question 24

What is a planetary nebula?

Answer 24

A shell of gas ejected from a low to medium-mass star at the end of its life.

Question 25

Fill in the blank: The _______ is the remnant of a massive star that has collapsed under its own gravity.

Answer 25

Neutron star

Question 26

What role does gravity play in the life cycle of a star?

Answer 26

It causes the nebula to collapse and initiates the formation of a star.