Stars

Stars are a large dense concentration of ​ (a)   gas.

Fusion (combining of hydrogen atoms ) in the core causes two hydrogen atoms to form ​ (b)   .

A ​ (c)   is a group of stars that form a pattern.

The ​ (d)   is an example of a constellation.

• hydrogen
• helium
• constellation
• Big Dipper

Tags

NGSS.MS-PS1-1

Which of the following is not a constellation

• 
• 
• 
• 

When two hydrogen atoms come together and create energy it is called

• Fission

• Nuclear meltdown

• Fusion

Tags

NGSS.HS-PS1-8

Star follow a definite ​ (a)   pattern that is referred to as the

​ (b)   of a star.

There is a graph called the ​ (c)   diagram which charts stars based on their temperature, ​ (d)   and mass.

• development/destruction
• life cycle
• Hetzprung-Russell
• luminosity , magnitude,

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

Luminosity is the total amount of energy a star emits, a measure of its intrinsic power that is independent of distance.

Magnitude is a measure of a star's brightness as it appears to an observer, which is affected by both its luminosity and its distance from Earth.

Apparent magnitude is the brightness seen from Earth

Absolute magnitude is the brightness a star would have if viewed from a standard distance of 10 parsecs

Match the following

• Magnitude

• Brightness of star as seen from Earth

• Luminosity

• total amount of energy a star emits

• Apparent magnitude

• brightness of a star would have if viewed form a standard distance

• Absolut magnitude

• star's brightness as it appears to an observer

A star forms from a spinning clouded of gas and dust called a ​ (a)  

As the Nebula spins, ​ (b)   causes it to ​ (c)   .

The spinning flattens into a disk of ​ (d)  

• Nebula.
• gravity
• dust and gas.
• shrink

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Reorder the following

• Red Giant

• Planetary nebula

• White dwarf

• Main sequence star

• Nebula

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

As the material of a spinning Nebula comes together at the center of the disk,

A ​ (a)   begins to form.

A Protostar is the ​ (b)   of a Nebula that becomes a star.

As the Protostar shrinks, ​ (c)   build up.

When the temperature/pressure are high enough it starts to ​ (d)   and becomes a ​ (e)   .

• Protostar
• material in the center
• temperature and pressure
• give off light
• star

Tags

NGSS.HS-ESS1-1

Reorder the following from a Nebula - Protostar-star

• As material comes together at the center of disk, A protostar begins to form

• As temperature and pressure build up and is high enough, the protostar starts to give off light

  Star is born

• Star forms a spinning cloud of dust and gas called a Nebula

• As the Nebula spins, gravity causes it to shrink flattening in to a disk of dust and gas

• A protostar is the material in the center that becomes the star

The most ​ (a)   phase of stellar life is when it is in the ​ (b)   .

This is considered the ​ (c)   of the lifespan of a star, and it spends ​ (d)   in this stage. The ​ (e)   , our star is a main sequence star.

• Main-Sequence stage
• middle age
• most of its time
• sun
• stable

Tags

NGSS.HS-ESS1-1