Friday 20th Aug

Question 1

Why do constellations appear to move in the sky?

Answer 1

Due to the rotation of the earth about its axis

Question 2

When was the telescope developed?

Answer 2

The sixteenth century

Question 3

What did the telescope allow astronomers to do?

Answer 3

View stars with much greater precision

Question 4

What are galaxies?

Answer 4

A group of stars

Question 5

What is a nebulae?

Answer 5

Clouds of gas and dust

Question 6

Where does Nebulae exist?

Answer 6

Interstellar space

Question 7

What is the closest Nebulae to Earth called?

Answer 7

Helix Nebula

Question 8

What is the Helix Nebula?

Answer 8

It is the remnant of a dying star-possible one like Sun.

Question 9

How far away is the Helix Nebula?

Answer 9

700 light years away

Question 10

What is the Orion Nebula?

Answer 10

A diffused Nebula situated in the Milky Way

Question 11

What is a diffuse Nebulae?

Answer 11

The birth of stars

Question 12

What is a planetary nebulae?

Answer 12

The remnants of stars

Question 13

What is one of the brightest nebulae?

Answer 13

Orion Nebula

Question 14

How far away is Orion Nebula from Earth?

Answer 14

1,334 +20 light years away

Question 15

What percentage of all stars, planets, comets and black holes make up the universe?

Answer 15

less than 5 percent

Question 16

What percentage of the universe is made up of dark matter?

Answer 16

27 percent

Question 17

What percentage of the universe is made up of dark energy?

Answer 17

68 percent

Question 18

What would happen if dark matter and dark energy didn’t exist?

Answer 18

The known universe wouldn’t work.

Question 19

Why is dark matter “dark”?

Answer 19

Because scientists can’t seem to directly observe them.

Question 20

What is a star’s life cycle determined by?

Answer 20

Its mass

Question 21

The larger the star’s mass, the shorter its…?

Answer 21

Life Cycle

Question 22

What is a star’s mass determined by?

Answer 22

The amount of matter that is available in its nebula.

Question 23

What happens over time in a nebula?

Answer 23

The hydrogen gas is pulled together by gravity, and it begins to spin

Question 24

What happens when hydrogen gas spins faster?

Answer 24

The nebula becomes a protostar

Question 25

What happens when the temperature of a protostar reaches 15, 000, 000 degrees?

Answer 25

Nuclear fusion occurs in the clouds core

Question 26

What happens when the protostar starts to glow bright and contracts?

Answer 26

It becomes a main sequence star and shines for millions to billions of years

Question 27

What major main sequence is currently shining in our solar system?

Answer 27

The sun.

Question 28

What is the process in a main sequence star?

Answer 28

Hydrogen in its core is converted into helium by nuclear fusion.

Question 29

What makes the core in a star unstable and contracts?

Answer 29

When the hydrogen supply begins to run out and the star is no longer generating heat by nuclear fusion

Question 30

What happens to the outer shell of the star?

Answer 30

The hydrogen which makes up of most of the outer shell starts to expand

Question 31

What is it called when a star expands, cools and glows red?

Answer 31

Red giant phase

Question 32

What happens in the core of a red giant?

Answer 32

Helium fuses in carbon

Question 33

All stars evolve the same way up to the red giant phase?

Answer 33

True

Question 34

The amount of mass a star has to determines which of the following life cycle paths it will take from there?

Answer 34

True

Question 35

A massive star will undergo a supernova explosion?

Answer 35

True

Question 36

What makes a neutron star?

Answer 36

If the remnant of the explosion is 1.4 to about 3 times the size of out sun

Question 37

How small are neutron stars?

Answer 37

30km diameter and very densely packed with neutrons

Question 38

What happens if the remnant of the explosion is more than 3 times the size if our sun?

Answer 38

It will become a black hole

Question 39

What is the purpose of a black hole?

Answer 39

It attracts any matter and energy that come near it