Waves and Electromagnetic Spectrum
To review -
Click on http://imagine.gsfc.nasa.gov/docs/science/know_l1/emspectrum.html
Click on the additional link on the left side
in the blue box. You may choose any one and following the instructions
on the link you have chosen. Make sure you copy the information on
this page.
Characteristics of Stars
Click on http://amazing-space.stsci.edu/resources/explorations/
Click on Star Light, Star Bright
1. If you want a review what a wave is
and what the electromagnetic spectrum is, click on Catch the Wave.
read, then click on each item to activiate. Before clicking on the
next page, choose brain teaser. If you are unsure of
the definition of a work, click on the word in green. After
complete this section go onto Making Waves.
Making Waves.
1. Change the energy of the wave
and determine the wavelength and frequency. Record the information
below
| energy (record by color) | wavelength | frequency |
did you have the correct wavelength and frquency? If you are unsure of the definition of a work, click on the word in greenIf you did, try the brain teaser, then move on to Heating Up
Heating Up
Toasting the Robot
Follow the instruction and write down on this form your answers by placing a check mark on the appropriate line.
1. As the temperature of the robot increases,
its color becomes:
_____ redder _______bluer
Before clicking on the next page, choose brain teaser. If you are unsure of the definition of a work, click on the word in green
Peak Wavelength
1. When the robot is at body temperature,
at approximately what wavelength does its radiation peak?
_____0.1 microns, _______0.6 micron,
_____ 1 micron, _____9 microns
2. As temperature increases, the peak
wavelength:
______decreases ________ increases
Before clicking on the next page, choose
brain teaser. If you are unsure of the definition of
a work, click on the word in green
Stellar Population Graph
Put a check mark on the line that completes
the statement correctly.
1. Hot stars put out their peak radiation
at
______ short wavelengths
__________long wavelengths
·2. What is the color of a star that
has a temperature of 30,000 degrees?
_______ very blue ____________very
red
·3. Why does a star appear blue when
it also emits green and red light? The star appears blue because its peak
wavelength is in the portion of the spectrum that is
_____ red ____
green _____ blue
Before clicking on the next page, choose brain teaser. If you are unsure of the definition of a work, click on the word in green
Stellar Encounter
1. List the star in order of hottest to
coolest.
| Temperature | Star number | Color of star |
| Hottest | ||
| Coolest |
Life cycle of Stars
click on webpage http://www.windows.ucar.edu/tour/link=/the_universe/Stars.html
1. Read the first paragraph. Click
on the word bright. How are star's brightness described?
click on webpage http://sunshine.chpc.utah.edu/labs/star_life/starlife_main.html
Read through the introduction and then answer the following questions
1. What does the webpage compare the
main sequence to in human life? What conclusion would you make about
star during the main sequence cycle?
2. Where is the birth place of stars?
3. The atoms of gas are mainly ________________ in the interstellar cloud.
Click of the arrow at the bottom and proceed to
the next page. Click on the animation star begin to form
4. Explain how a star is born (short
explanation) include elements and gravity
5. What is the balancing act that has
occur within a star?
6. If the temperature doesn't occur, what does the star become?
Read the information about main sequence. Then click on the interactive lab. Test out 3 stars.
Proceed to the next page and read about the equilibrium. Do the interactive.
1. Pressure is a function of _______________. (remember Charles Law first semester?)Continue to read about main sequence star.
take the quiz
1. The "strength" of gravity changes throughout the battle
for equilibrium in a star ___T ___F
2. When temperature increases, gravit decreases.
___T ___F
3. When temperature increases, gas pressure increases.
___T ___F
4. When gas pressure equals gravity, the star is at equilibrium
___T ___F
5. When the core contracts, pressure will increase.
___T ___F
6. Increasing density at the core will gradually increase
temperature at the core of the star
___T ___F
7. Temperature that th core can achieve depends upon how many
atomic collisions there are at the core of the star
___T ___F
8 Stars can fuse(burn) many types of atoms(elements), but
each type of atom requires a different tempearture to fuse.
___T ___F
Read what happens after the main sequence.
TAKE THE QUIZ! Pay attention it will give
you clue if you make a wrong choice.
How did you do?
Click on the arrow to continue... the beginning
of the end.
1. What element is burning? _____________
2. Click on the interactive lab.
3. Continue reading. Observe Mira
and its companion. what type of star is it?
4. Take part 2 quiz.
How did you do?
Click on the arrow to continue
Read about carbon burning.
1. What is the difference between a low
mass star and high mass star?
Click on each to find out information that you will write on this paper.
2. Click on the interactive lab to find
out what happens to different size stars at the end of their life cycles.
H-R Diagram
click on website http://sunshine.chpc.utah.edu/labs/star_life/hr_interactive.html
Answer the questions below with the words.
On the interactive it asks you to answer by clicking on the letter.
Answer the questions below
1. Which of the stars is oldest in terms of it's life cycle?
_________________
2. Which stars are burning hydrogen as fuel? __________,_______________,________
3. Which star is burning helilum as fuel? _______________
4. Which star is closest to death? ________
5. Which star has the higest luminosity? ________________
6. What causes the star with the highest luminosity to be the brightest?
_________________.
7. Which star has the lowest luminosity? ________________
8. What causes the star with the lowest luminoisty to be not as bright?
________________.
9. Which star has the highest surface temperature? _______
10. Main
sequence star become red giants when they run out of which fuel ?______________
11. Will
the three main sequence stars ever become white dwarfs? __________
12. Was
star e (Sirius B) ever a main sequence star? ________.
13. Predict
what Vega will be come next. __________
14. Predict
what Betelgeuse will be come next. __________
Light Years
Click on
http://school.discoveryeducation.com/schooladventures/universe/itsawesome/index.html
to understand light year better
Read through the information and answer the following
questions.
1. To understand the need for such a big
unit as the light year, what comparison was made about measuring from New
York to Tokyo?
2. Define light year:
3. How long would it take for the space shuttle
to go one light-year?
Set it up as a mathematical equation.