How are nebulae and stars related? Select the three correct answers.(2 points)
Responses
Stars form from nebulae.
Stars form from nebulae.
Nebulae are found inside stars.
Nebulae are found inside stars.
Stars are pulled toward nebulae.
Stars are pulled toward nebulae.
Nebulae explode to form stars.
Nebulae explode to form stars.
Stars explode to form nebulae.
Stars explode to form nebulae.
Nebulae form from stars.
Nebulae form from stars.
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The correct answers are:
- Stars form from nebulae.
- Nebulae form from stars.
- Stars explode to form nebulae.
The correct answer is:
- energy of a nebula
Question
How can a planetary nebula be identified? Select the two correct answers.(1 point)
Responses
diffuse edges
diffuse edges
spherical shape
spherical shape
dark area
dark area
central star remnant
What does it mean to characterize a nebula as diffuse?(1 point)
Responses
Its edges do not have clear boundaries.
Its edges do not have clear boundaries.
It reflects only visible radiation.
It reflects only visible radiation.
Its edges have clear boundaries.
Its edges have clear boundaries.
It reflects only non-visible radiation.
The correct answer is:
- Its edges do not have clear boundaries.
What causes a supernova?(1 point)
Responses
force of gravity
force of gravity
force of a nebula
force of a nebula
energy of heat
energy of heat
energy of a nebula
The correct answers are:
- diffuse edges
- central star remnant
Multiple Choice
Is –7 + 9 = –9 + 7 true, false, or open?
(1 point)
Responses
true
true
false
false
open
The correct answer is:
- false
Is 4x – 3 = 19 true, false, or open?
(1 point)
Responses
true
true
false
false
open
The correct answer is:
- true
Which of the following is a solution to the equation 16 = 4x – 4?
(1 point)
Responses
–5
–5
–4
–4
5
5
16
The correct answer is:
- 5
An art student wants to make a model of a rectangular classroom. The length of the classroom is 2.4 times its width. The length of the student’s model is 42 in. What should the width of the model be?
(1 point)
Responses
17.5 in
17.5 in
20.5 in
20.5 in
83.6 in
83.6 in
100.8 in
To find the width, we can set up a proportion using the information given. Let the width of the model be w inches.
We know that the length of the classroom is 2.4 times its width, so the length of the model is 2.4w inches.
We can set up the proportion: 2.4w / w = 42 / x
Simplifying the proportion, we have: 2.4 = 42 / x
To solve for x (the width of the model), we can cross-multiply: 2.4x = 42
Dividing both sides by 2.4, we find: x = 42 / 2.4
Calculating this, we get x ≈ 17.5
Therefore, the width of the model should be approximately 17.5 in.
The correct answer is 17.5 in.
Use mental math to determine the solution to x – 3 = 10.
(1 point)
Responses
x = 7
x = 7
x = 13
x = 13
x = 30
x = 30
x = 0
x = 0
To solve the equation x - 3 = 10 mentally, we can add 3 to both sides of the equation to isolate x.
So, x - 3 + 3 = 10 + 3
This simplifies to x = 13.
Therefore, the solution to the equation x - 3 = 10 is x = 13.
The correct answer is x = 13.
How would you say “in second period” in Spanish?
(1 point)
Responses
en el sexto hora
en el sexto hora
en la sexta hora
en la sexta hora
en el segundo hora
en el segundo hora
en la segunda hora
The correct answer is:
- en la segunda hora.
How would you write 1:30 p.m. using 24-hour time?
(1 point)
Responses
1:30
1:30
01:30
01:30
13:30
13:30
15:30
The correct answer is:
- 13:30
What does la clase de ciencias naturales es aburrida mean in English?
(1 point)
Responses
The science class is fun.
The science class is fun.
The social studies class is my favorite.
The social studies class is my favorite.
The computer science class is easy.
The computer science class is easy.
The science class is boring.
The correct answer is:
- The science class is boring.
How do most students in Puerto Rico go to school?
(1 point)
Responses
They walk.
They walk.
They ride a bike.
They ride a bike.
They take a school bus.
They take a school bus.
They drive their own car.
The correct answer is:
- They take a school bus.
What pronoun should you use to address a teacher in Puerto Rico?
(1 point)
Responses
ustedes
ustedes
tú
tú
usted
usted
vosotros
The correct answer is:
- usted