Astronomy

Question 1

What is the life cycle of a star?

Answer 1

The life cycle of a star includes stages: nebula, main sequence, red giant, and end stages such as white dwarf, neutron star, or black hole.

Question 2

True or False: A star spends most of its life in the main sequence stage.

Answer 2

True

Question 3

Fill in the blank: The initial material for star formation is a _____

Answer 3

nebula

Question 4

What process powers a star during the main sequence phase?

Answer 4

Nuclear fusion of hydrogen into helium.

Question 5

Which element is primarily fused in the core of a main sequence star?

Answer 5

Hydrogen

Question 6

What happens to a star when it exhausts its hydrogen fuel?

Answer 6

It expands into a red giant.

Question 7

Multiple Choice: What is the final stage of a low to medium mass star?

Answer 7

White dwarf

Question 8

What is the fate of a massive star after it goes supernova?

Answer 8

It can become a neutron star or a black hole.

Question 9

True or False: All stars end their life cycle as black holes.

Answer 9

False

Question 10

What is a supernova?

Answer 10

A supernova is a powerful explosion that occurs at the end of a massive star’s life cycle.

Question 11

What is the main sequence phase of a star?

Answer 11

The period in which a star fuses hydrogen into helium in its core.

Question 12

What is the significance of nuclear fusion in stars?

Answer 12

It releases energy that makes stars shine.

Question 13

What is a neutron star?

Answer 13

A dense remnant of a supernova explosion, primarily composed of neutrons.

Question 14

Fill in the blank: A black hole is formed when a massive star collapses under its own _____

Answer 14

gravity

Question 15

What determines whether a star becomes a white dwarf, neutron star, or black hole?

Answer 15

The star’s initial mass.

Question 16

Multiple Choice: Which stage comes after the red giant phase for a low mass star?

Answer 16

White dwarf

Question 17

Fill in the blank: The remnants of a supernova can lead to the formation of a _____ star.

Answer 17

neutron

Question 18

What is a planetary nebula?

Answer 18

A shell of gas ejected from a red giant star at the end of its life cycle.

Question 19

True or False: Massive stars have shorter life spans than smaller stars.

Answer 19

True

Question 20

What is the order of the planets in out solar system?

Answer 20

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

Question 21

What are smaller planets primarily made of ?

Answer 21

Rock

Question 22

What are larger planets primarily made of?

Answer 22

Gas

Question 23

What is the geocentric model ?

Answer 23

The initial idea that the earth is the centre of our solar system and the moon planet and sun orbited earth

Question 24

What is the heliocentric model?

Answer 24

The sun is the centre of our solar system and planets orbit the sun

Question 25

What does the gravitational force cause the planets to do ?

Answer 25

To constantly change direction (it moves in a circle around the sun)

Question 26

True or False the speed of the planets is constant ?

Answer 26

True

Question 27

What does red shift show ?

Answer 27

Galaxies are moving away from earth

Question 28

True or False as the red shift increases so does the galaxies distance from earth

Answer 28

True

Question 29

Is red shift evidence for the Big Bang theory

Answer 29

Yes

Question 30

What does CMB stand for

Answer 30

Cosmic microwave background

Question 31

Does CMB prove the Big Bang ?

Answer 31

Yes

Question 32

Does the red shift prove the steady state theory?

Answer 32

Yes

Question 33

What is the steady state theory

Answer 33

As the universe expands matter is constantly being created so the is density of matter in the universe

Question 34

Does CMB support the steady state theory

Answer 34

No