8 th Grade Science Do Now Monday, December 3, 2012 On page __, make your weekly Do Now page....

8th Grade Science

Do Now Monday, December 3, 2012

On page __, make your weekly Do Now page.

Scientists use spectroscopes to separate light into colored lines. Make a prediction about what information this tells them about stars.

8th Grade Science

Today’s Schedule

1. Do Now2. Fingerprinting Stars3. Analysis Questions

Essential QuestionHow do we learn about the components of our universe?

How does science explain the origin of the universe?

What are the differences/similarities between how science, religion, art, historians explain the origins of the universe?

Vocabulary

UniverseStarsNebulaeGalaxiesHerztsprung-Russel diagramElectromagnetic Spectrum

Monday, December 3, 2012

Pre-AP Homework

Grade-Level Homework

8.8(A)

HW due on Friday

8.8(A)

HW due on Friday

QUIZ ON FRIDAY QUIZ ON FRIDAY

8th Grade Science

Today we will…

8.8(A) describe components of the universe, including stars, nebulae, and galaxies, and use models such as the Hertsprung-Russell diagram for classification

8.8(E) research how scientific data are used as evidence to develop scientific theories to describe the origin of the universe

Monday, December 3, 2012

8th Grade Science

Fingerprinting Stars Monday, December 3, 2012

1. Compare the strips of elements to the Fingersprints of the Stars to discover what each star is comprised of.

2. Record observations on the handout.

3. Use the Periodic Table to identify the atomic number and mass for each element.

8th Grade Science

Analysis Questions Monday, December 3, 2012

1. What elements are found in all five stars?

2. Why do you think these elements are found in all five stars? Think about their atomic structure and placement on the Periodic Table.

3. Do any of the stars contain all eight of the given elements?

4. Which of the stars do you think is the oldest?

8th Grade Science

Do Now Tuesday, December 4, 2012

Complete the Anticipation Guide and then tape/glue it on page __.

8th Grade Science

Today’s Schedule

1. Do Now2. Constructing HR

Diagram3. Reading: HR Diagram4. Finish Anticipation Guide




Vocabulary


Tuesday, December 4, 2012

Pre-AP Homework


8.8(A)

HW due on Friday

8.8(A)

HW due on Friday


8th Grade Science

Today we will…




8th Grade Science

Constructing HR Diagram

1. Construct an HR Diagram using the materials at your table.

2. Record the completed diagram on page __. Make sure you include the labels for each axis.


8th Grade Science

Reading

1. Read: HR Diagram

2. Use the handout to record the 4 types of stars, the relationship of temperatures and brightness, and location.


8th Grade Science

Finish Anticipation Guide

Finish the Anticipation Guide.


8th Grade Science

Do Now

On page __, describe what HR diagrams are and what they measure as if you were talking to a third grader.

Wednesday & Thursday, December 5 & 6, 2012

8th Grade Science

Do Now

ALTERNATE (Grade Level)

Read: HR Diagrams (from Tuesday)

Using the reading, complete the handout.


8th Grade Science

Do Now

ALTERNATE (Pre-AP)Read: HR Diagrams (from Tuesday)

Create the table below on page ____ and, using the reading, complete the table.


Type of Star Relationship of Temperature and Brightness

Location on HR Diagram

Main Sequence

Giant

Supergiant

White Dwarf

8th Grade Science

Today’s Schedule

1. Do Now2. BrainPop Video: Star

Cycle3. Life Cycle of a Star4. Lab: Black Holes and

Beyond5. BrainPop Video: Black

Holes6. Comic Strip7. White Board Review Essential Question

How do we learn about the components of our universe?



Vocabulary

Pre-AP Homework


8.8(A)

HW due on Friday

8.8(A)

HW due on Friday




8th Grade Science

Today we will…




8th Grade Science

Video: Star Cycle

Life Cycle of a Star


http://www.brainpop.com/science/space/lifecycleofstars/

8th Grade Science

Lab

Create the table below on page ___ of you INB.

Formulas: Circumference = 2πrVolume = 4/3 πr3

Density = m/Vπ = 3.14


Trial

Circumference

Radius Volume Mass Density

1.

2.

3.

4.

8th Grade Science

Lab

TRIAL 11. Inflate a balloon to about 45cm in

circumference.

2. Cover the balloon in aluminum foil to make your “star”.

3. Measure your “star” three times at three different angles and record the average under Trial 1.

4. Place your “star” on the triple beam balance to determine the mass. Record under Trial 1.


8th Grade Science

Lab

TRIAL 21. Using a push-pin, carefully pop your “star”

without crushing the foil.

2. Carefully crush the “star” so that it is SLIGHTLY smaller than its original volume.

3. Measure and record the circumference of the “star” three times at three different angles. Record this under Trial 2.

4. Measure the mass of the “star” and record in under Trial 2.


8th Grade Science

Lab

TRIAL 31. Crush your “star” SLIGHTLY once again so

that it is not quite completely crushed.




8th Grade Science

Lab

TRIAL 41. Crush your “star” one last time so that it is

now as compact as possible.




8th Grade Science

Lab – Questions

Answer the questions on the handout and tape/glue it on page ___.


8th Grade Science

Video: Black Holes

Black Holes Video


http://www.brainpop.com/science/space/blackholes/

8th Grade Science

Comic Strip

Create a comic strip showing the life cycle of a star.

Your comic strip must include the following terms:

Main Sequence Red GiantWhite Dwarf Black HoleSupergiant HR Diagram


8th Grade Science

White Board Review

White Board Review


8th Grade Science

Do Now Friday, December 7, 2012

On page __, answer the following questions.

1.Describe the temperature and brightness of Giants, according the to HR Diagram.

2.What is the name of the star group where a star spends the majority of its life?

8th Grade Science

Today’s Schedule

1. Do Now2. Finish Black Hole Lab3. White Board Review




Vocabulary


Pre-AP Homework


8.8(A)

HW due on Today!

8.8(A)

HW due Today!

QUIZ ON MONDAY QUIZ ON MONDAY

Friday, December 7, 2012

8th Grade Science

Today we will…




8th Grade Science

Finish Black Hole Lab

Complete the Conclusion Questions.

Black Holes Video


http://www.brainpop.com/science/space/blackholes/

8th Grade Science

White Board Review

1. Describe the relationship between surface temperature and brightness of stars in the main sequence?


8th Grade Science

White Board Review

2. Using the HR Diagram, describe the temperature and magnitude (brightness) of Betelgeuse.


8th Grade Science

White Board Review

3. Where do black holes come from?

a) Astronomers have no idea.b) Astronomers think that massive stars

exploded and created them.c) Astronomers think that stars like our

Sun exploded and created them.d) There is no evidence that black holes

are real.


8th Grade Science

White Board Review4. What types of celestial objects are seen in

the picture below?

a) Planets and galaxiesb) Planets and black holesc) Stars and black holesd) Stars and galaxies


8th Grade Science

White Board Review5. As a star collapses and creates a black

hole, the mass of the star stays the same, but the volume decreases. What effect does the change in volume have on the density of the black hole?

a) The density increases.b) The density decreases.c) The density stays the same.d) There is no way to keep the mass the same

and change the volume.


8th Grade Science

White Board Review6. If a star has a low surface temperature and

is considered very dim, where would you expect it to be located on the Herztsprung-Russell diagram?

a) In the lower, right corner.b) In the upper, right corner.c) In the upper, left corner.d) In the main sequence.


8th Grade Science

White Board Review7. In the HR diagram, massive stars tend to be

either blue or white in color. What does this tell us about these stars?

a) These stars have low surface temperatures.b) These stars are very dim stars.c) These stars are not in the Main Sequence.d) These stars have high surface

temperatures.


8th Grade Science

White Board Review

8. What does “light-year” mean?


8th Grade Science

White Board Review9. Ultraviolet, x-ray, visible, and microwave

are all members of the…

a) Periodic Table.b) Tools used by medical professionals.c) Electromagnetic (EM) spectrum.d) Elements of the sun.


8th Grade Science

White Board Review10. When would an astronomer want to use

light-years for the measurement?

a) Calculating the time it takes sunlight to travel from the sun to Earth.

b) Calculating the time it takes to travel across the galaxy.

c) Describing the distance between stars.d) Describing the distance between the Earth

and the Sun.


8th Grade Science

White Board Review

11. What group of stars does the Sun belong to?


8th Grade Science

White Board Review

12. Based on the Spectral Data for Element A, which of the following stars contains Element A?


Spectral Data for Element A

a)

b)

c)

d)

8th Grade Science

QUIZ

predator/prey

interactions


8 th Grade Science Do Now Monday, December 3, 2012 On page __, make your weekly Do Now page....

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