Question
How can a planetary nebula be identified? Select the two correct answers.(1 point)
Responses
diffuse edges
spherical shape
central star remnant
dark area
Responses
diffuse edges
spherical shape
central star remnant
dark area
Answers
Answer
How are nebulae and stars related? Select the three correct answers.(2 points)
Responses
Nebulae explode to form stars.
Nebulae form from stars.
Stars explode to form nebulae.
Nebulae are found inside stars.
Stars are pulled toward nebulae.
Stars form from nebulae.
Responses
Nebulae explode to form stars.
Nebulae form from stars.
Stars explode to form nebulae.
Nebulae are found inside stars.
Stars are pulled toward nebulae.
Stars form from nebulae.
Answer
What causes a supernova?(1 point)
Responses
force of a nebula
energy of a nebula
energy of heat
force of gravity
Responses
force of a nebula
energy of a nebula
energy of heat
force of gravity
Answer
What does it mean to characterize a nebula as diffuse?(1 point)
Responses
Its edges do not have clear boundaries.
Its edges have clear boundaries.
It reflects only visible radiation.
It reflects only non-visible radiation.
Responses
Its edges do not have clear boundaries.
Its edges have clear boundaries.
It reflects only visible radiation.
It reflects only non-visible radiation.
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