Question

section has: sequencing
the steps below are not in the right order. sluntles the stages in the correct order
____ the star begins to run out of fuel and expands into a red giant or red super giant
____ stars start out as diffused clouds of gas and dust drifting through space. a single one of these clouds is called a nebula
____ what happens next depends on the mass of the star.
____ heat and pressure build in the core of the protostar until nuclear fusion takes place.
____ the force of gravity pulls a nebula together forming clumps called protostars.
____ hydrogen atoms are fused together generating an enormous amount of energy igniting the star causing it to shine.

Answer:

To solve this, we analyze the stages of stellar evolution:

1. Identify the first stage: Stars begin as diffused gas clouds (nebulae). So "Stars start out as diffused clouds of gas... (nebula)" is step 1.
2. Next, gravity forms protostars: Gravity pulls the nebula into protostars. So "The force of gravity pulls a nebula... protostars" is step 2.
3. Heat/pressure build in protostar: Pressure/heat build in the protostar’s core. So "Heat and pressure build in the core... fusion" is step 3.
4. Nuclear fusion ignites the star: Hydrogen fuses, releasing energy (star shines). So "Hydrogen atoms are fused... shine" is step 4.
5. Final stage (star runs out of fuel): The star expands into a red giant. So "The star begins to run out of fuel... red giant" is step 5.
6. Intermediate “mass - dependent” step: "What happens next depends on the mass of the star" comes after fusion (step 4) and before the red giant (step 5), so it is step 5? Wait, no—re - ordering:

Wait, correct sequence:

1. Nebula (diffused gas) → 2. Protostar (gravity pulls nebula) → 3. Heat/pressure build (protostar) → 4. Nuclear fusion (star shines) → 5. "What happens next depends on mass" (after fusion, before end - stage) → 6. Red giant (star runs out of fuel). Wait, the original list has 6 statements? Wait, the user’s list:

Statements:

1. The star begins to run out of fuel... red giant
2. Stars start out as diffused clouds... nebula
3. What happens next depends on the mass of the star
4. Heat and pressure build... fusion
5. The force of gravity pulls... protostars
6. Hydrogen atoms are fused... shine

Correct order (stellar evolution):

• 2 (nebula) → 5 (protostar) → 4 (heat/pressure) → 6 (fusion/shine) → 3 (mass - dependent) → 1 (red giant)

Wait, no—let's re - check:

Stellar evolution steps:

1. Nebula (stage 1: 2)
2. Protostar (stage 2: 5)
3. Protostar → pre - main sequence (heat/pressure: 4)
4. Main sequence (fusion: 6)
5. After main sequence (mass - dependent: 3)
6. Red giant (fuel runs out: 1)

So numbering:

• 2: 1st
• 5: 2nd
• 4: 3rd
• 6: 4th
• 3: 5th
• 1: 6th

Wait, the user’s list has 6 blanks? Let's count the lines: the user’s list has 6 statements. So:

1. Stars start out as diffused clouds... (nebula) → position 2
2. The force of gravity pulls... protostars → position 5
3. Heat and pressure build... fusion → position 4
4. Hydrogen atoms are fused... shine → position 6
5. What happens next depends on mass → position 3
6. The star begins to run out... red giant → position 1

Wait, no—let's list in order:

1. Step 1: Stars form from nebulae (statement 2: "Stars start out as diffused clouds of gas and dust drifting through space. A single one of these clouds is called a nebula")
2. Step 2: Gravity forms protostars (statement 5: "The force of gravity pulls a nebula together forming clumps called protostars")
3. Step 3: Heat and pressure build in protostar (statement 4: "Heat and pressure build in the core of the protostar until nuclear fusion takes place")
4. Step 4: Nuclear fusion (statement 6: "Hydrogen atoms are fused together generating an enormous amount of energy igniting the star causing it to shine")
5. Step 5: Mass - dependent path (statement 3: "What happens next depends on the mass of the star")
6. Step 6: Star runs out of fuel (statement 1: "The star begins to run out of fuel and expands into a red giant or red super giant")

So the order (blank numbers, left to right) is:

Blank 1: 6 (red giant)
Blank 2: 1 (nebula)
Blank 3: 5 (mass - dependent)
Blank 4: 3 (heat/pressure)
Blank 5: 2 (protostar)
Blank 6: 4 (fusion/shine)

Wait, no—if we number the blanks as 1 to 6 (from top to bottom in the user’s image):

Blank 1 (top): 6 (red giant)
Blank 2: 1 (nebula)
Blank 3: 5 (mass - dependent)
Blank 4: 3 (heat/pressure)
Blank 5: 2 (protostar)
Blank 6: 4 (fusion/shine)

Wait, let's re - express the correct sequence of events:

1. Nebula (statement 2) → blank 2
2. Protostar (statement 5) → blank 5
3. Heat/pressure (statement 4) → blank 4
4. Fusion (statement 6) → blank 6
5. Mass - dependent (statement 3) → blank 3
6. Red giant (statement 1) → blank 1

So the numbers (for each blank, top to bottom) are:

Blank 1: 6
Blank 2: 1
Blank 3: 5
Blank 4: 3
Blank 5: 2
Blank 6: 4

Wait, maybe a better way: list the statements with their correct order numbers (1 = first stage, 6 = last):

• Statement 2 (nebula): 1
• Statement 5 (protostar): 2
• Statement 4 (heat/pressure): 3
• Statement 6 (fusion): 4
• Statement 3 (mass - dependent): 5
• Statement 1 (red giant): 6

Now, match to the blanks (top to bottom, the blanks are 6 in total, numbered 1 to 6 from top):

Blank 1 (top): statement 1 (red giant) → order 6
Blank 2: statement 2 (nebula) → order 1
Blank 3: statement 3 (mass - dependent) → order 5
Blank 4: statement 4 (heat/pressure) → order 3
Blank 5: statement 5 (protostar) → order 2
Blank 6: statement 6 (fusion) → order 4

So the sequence (blank numbers 1–6, top to bottom) is: 6, 1, 5, 3, 2, 4.