1.  On what date was NEAR launched?   ____________________________
 

2.   What is an asteroid?
 
 

3.   What is NEAR doing for the first time?
 
 

4.  Who is Dr. Lucy McFadden?
 
 

5.   Click on the NEAR Science Payload picture and complete this chart
 

Instrument  nick name	. . .  Instrument Full Name	. . EM Spectrum wave it uses . .	. . . . Purpose . . .  .
6.  NIS .
7.  MSI .
8.  XGRS .
9.  NLR .
10.  RSE .
11.  MAG .

 

12.   Matching _____ 1.  X-Ray/Gamma-Ray Spectrometer _____ 2.  Multispectral Imager _____ 3.  Near Infrared Spectrograph _____ 4.  A magnetometer  _____ 5.  NEAR Laser Range finder _____ 6.  Radio Science Experiment _____ 7.  Measures the spectrum of reflected visible light _____ 8.  Measures X-rays from the Sun which bounce off Eros. _____ 9.  Detects a magnetic field. _____ 10. Takes pictures of Eros in visible light. _____ 11.  Uses a laser (a kind of visible light). _____ 12.  Used Doppler tracking

A.  NIS B.   MAG C.  RSE D.  NLR E.  MSI F.  XGRS

13.    Which instrument did this?      Match up NIS,  MAG,  RSE,  NLR,  MSI,  XGRS

_____   Determined what kind of minerals are on Eros;  looked for silicate minerals (iron)  in particular.

_____   Studied the geology and mineral composition of Eros;  also measured it's density.

_____    Helped to measure the surface features of Eros, such as craters and grooves; also helped to measure density.

_____     Made a map of where the different kinds of elements are on the surface of Eros.

_____  Could tell how fast the space craft was moving and in what direction.

_____  Will help decide where Eros came from, and how the asteroid was made.
 

Three Kinds of Spectra

Read this page.

15.  Name three kinds of spectra.   Describe how they are different.

1.

2.

3.

17.  Name four common light sources you can find in your classroom.

1.

2.

3.

4.

Click on the 'Source' window at the top of the page. Draw the spectrum from these sources of light:

Light Source:  Fluorescent light

Light Source: Sun (similar to an incandescent light)

Study the Spectroscope view and the Emission Graph to answer these questions.
18.   What is the longest wavelength your eyes can see?
 

19.  In the fluorescent spectrum,  is the 500 nm wavelength completely missing?
 

20.  What is the name of the wavelengths from 750 to 820 nm?  ____________________
Can we see those wavelengths?  ____________

21.  Compare the results of the incandescent light bulb with the spectra of the fluorescent light tube fixture. Based on what you saw, can you think of a reason why the fluorescent lights are more "energy efficient"?
 
 
 
 

22.  Draw the spectrum
Light Source: Red LED (Like the little red light on your cell phone.)

a.  Is the red light made by just one wavelength?  ____
b.  What is the range of the wavelengths that make up the red light?  ___________________
c.  Explain in your own words what a red LED spectrum is.
 
 
 
 
 
 

Activity 4.2  What is Light

Link I What is light?

23.  What are the two ways to think about light?   As a _____________ and as a  _________________.

24.  What is the speed of light?  ________________________

25.  When does the speed of light change?
 

26. What is Visible light?
 
 

27.  What is the Electromagnetic Spectrum?
 
 
 

28.   What is the basic difference between different types of light?
 
 

29.   What is the definition of Wavelength?  AND What is the symbol for wavelength?
 
 

30.  Label a distance of 2 wavelengths on this diagram:

 

31.  What unit is used for measuring wavelength? _______________________

32.  There is a  diagram of a wave on the web page,  lower left corner.
Answer the Test yourself question:  The length of this wave is _________________.
 
 

33.  What is the definition of Amplitude?
 

34. There is a  diagram of a wave amplitude on the web page,  lower right corner.
Answer the Test yourself question:  The amplitude of this wave is _________________.

35.  Amplitude is a measure of  ___________________________________________________.

36.   What does the wave length of a wave tell you?
 
 

37.  What does the amplitude of a wave tell you?
 
 
 
 
 
 

Visible Light is one kind of Electromagnetic Radiation

38.  Write the names of the 7  kinds of 'light'.
 

Kinds of Electromagnetic Radiation
1	longest wavelength
2
3
4
5
6
7	Shortest wavelength

39.  What kind of 'light'  has the LONGEST wavelength?  _______________________

40.  What kind of 'light' has the SHORTEST wavelength?  _______________________

41.   What is the relationship between wavelength and energy?
 

42.  Where is visible light in the electromagnetic spectrum?  __________________________________

43.  What are Cosmic Rays?
 
 
 

Review what you learned about light.
 

44.  Matching _____  1.  energy that passes through _____  2.  energy that stops at an object _____  3.  energy that bounces off an object _____  4.  first thing radiation hits when it comes                  to Earth _____  5.  what happens to a surface that                   absorbs  energy _____  6.  the reflective quality of a surface _____  7.  a white cloud _____  8.  a black sandy beach _____  9.  absorbs much of the Sun's energy _____  10.  reflects much of the Sun's energy _____  11.  transmits much of the Sun's energy

A.  albedo B.  it heats up C.  reflected energy D.  transmitted energy E.   absorbed energy F.  cryosphere G.  atmosphere H.  hydrosphere I.   the top of the atmosphere J.   absorbs light energy K.  reflects light energy

 

45.  Matching the Meaning ____  1.  energy ____  2.  balance ____  3.  absorb  ____  4.  reflect ____  5.  radiate ____  6.  emit ____  7.  conduction ____  8.  convection

A.  To bounce it away B.  To send out in all directions C.  Incoming equals outgoing D.  To take in, soak up E.  The capacity to do work F.  When energy is carried by a moving liquid or gas G.  When energy travel through a solid H.  To release, or send out

 
 

Activity 4.3  The Multi wavelength Milky Way

46.  What is the Milky Way?    How can you see the Milky Way?
 
 
 
 

47.  CLick on the Multi Wave Milky Wave link.   Pick any two images, tell the wavelength, and describe what you see.
 

1.  Image Wavelength:  ______________________ Description:

2.  Image Wavelength:  _____________________ Description:

 

Activity 4.4   Electromagnetic Spectrum Reports

48.   Which wavelength did you choose to report on?   ______________________

49.  Tell the most interesting thing you learned about your wavelength.
 
 
 
 

50.   Pick two other students and read their EM Report on the web.
 

1. Student Name __________________________   School _____________________ 2. Wavelength studies:  __________________________________ Two interesting things you learned from this web page:

1. Student Name __________________________   School _____________________ 2. Wavelength studies:  __________________________________ Two interesting things you learned from this web page: