Star⭐️

Question 0

Nebulas are held together by what two forces?

Answer 0

Gravity and heat

Question 1

Stars begin from dark clouds of?

Answer 1

Dust and gas

Question 2

How many stages does our sun go through to become star in main sequence

Answer 2

7

Question 3

Stage one is called?

Answer 3

Interstellar cloud

Question 4

What do we call newly formed area that will soon become a star?

Answer 4

Opaque region

Question 5

Ability to plot movement of a protostar

Answer 5

Evolutionary track

Question 6

Dark clouds of dust and gas are called?

Answer 6

Nebulas

Question 7

Nebulas come from? And the matter in between stars is called?

Answer 7

Interstellar space

Question 8

Two things happen to light when light from stars shines through it?

Answer 8

Reddening- freq of color remain the same

Dims

Question 9

What is rarer to find in interstellar space? Gas or dust?

Answer 9

Dust - trillion gas molecules and 1 dust

Gas - in 1 cm3 of space is 1 atom of gas

Question 10

Interstellar space is made up of what two elements?

Answer 10

9% helium

90% hydrogen

Question 11

Dirty ice is in interstellar is similar to what other body?

Answer 11

Comets

Question 12

These clouds of dust and gas are so thick they block out all background light

Answer 12

Dark nebula

Question 13

If a cloud has hot young stars forming within it, it can glow this tho of cloud?

Answer 13

Emission nebula

Question 14

Reflection nebulas are created by this?

Answer 14

Blue light reflecting

Question 15

Dark areas amongst nebulas are called?

Answer 15

Dark dust clouds

Question 16

Absolute zero temperature in kelvin and Celsius?

Answer 16

0 kelvin

-273 Celsius

Question 17

Key element of our sun or any other star

Answer 17

Hydrogen

Question 18

In 5 billion years this will be the main element of our sun

Answer 18

Helium

Question 19

When the helium core “fires up” and the hydrogen burns is called what?

Answer 19

Hydrogen shell burning

Question 20

As hydrogen burns and temp and size increase in a star what also increases?

Answer 20

Luminosity

Question 21

How hot does core have to be to fuse helium

Answer 21

10,000,000 Celsius

Question 22

When helium fuses to into carbon it is called

Answer 22

Helium flash

Question 23

90% of stars life is spent here?

Answer 23

Main sequence

Question 24

Low mass stars end life's? | High mass stars end life's?

Answer 24

``` Low= calm High= violent ```

Question 25

Death of stars gives universe what?

Answer 25

Heavier elements

Question 26

Before Big Bang there was this

Answer 26

Hydrostatic equilibrium

Question 27

As red giant grows and develops it is formed into two distinct areas

Answer 27

Exposed core | Dust cloud

Question 28

As envelope of red giant is blown off it gets illuminated by the core below. This cloud is called

Answer 28

Planetary nebula

Question 29

As Core contracts it forms this(not very hot but not to bright)

Answer 29

White dwarf

Question 30

When white dwarf burns out it becomes

Answer 30

Black dwarf

Question 31

If a white dwarf releases a lot of energy it is a process called

Answer 31

NOVA

Question 32

if a NOVA reoccurs over and over again it's called

Answer 32

Recurrent NOVA

Question 33

Our sun is called?

Answer 33

1 solar mass star

Question 34

Where would you find low and high mass stars

Answer 34

Low mass are on bottom | High mass are on top

Question 35

Stars that are to small to ever ignite into a true star

Answer 35

Clinkers

Question 36

System of stars with two members

Answer 36

Binary system

Question 37

Two types of clusters

Answer 37

Open- loose irregular, young stars | Globular- oldest stars, millions, no blue

Question 38

Chase each other and never twinkle

Answer 38

Visual binaries

Question 39

Clusters are hard o se and form where?

Answer 39

Nebulas

Question 40

Supergiants have the strongest what?

Answer 40

Solar wind

Question 41

In less then 1 second the core of a supergiant can undo all the work that the star has done the previous 10 million years in a process known as

Answer 41

Photodisintegrarion

Question 42

When the core collapse

Answer 42

Core collapse supernova

Question 43

Dividing mass long between white dwarf and supernova?

Answer 43

8 solar masses

Question 44

Type 1 supernovas get mass needed from what?

Answer 44

Binary star

Question 45

After a star explodes into a supernova the leftovers are called

Answer 45

Supernova remnants

Question 46

Naturally occurring elements made in the cores of stars? (8 of them)

Answer 46

``` Helium Sulfur Magnesium Oxygen Silicon Carbon Neon ```