Objective:
Campers will see how filters used on remote systems in Earth orbit effect
what we see.
Materials:
picture sheet B (Earth features...)
log sheet
pencils
5 yd x 10 yd sheets of red, blue, yellow, & green filters
picture sheet A
poster board
4 craft sticks
hot glue gun/sticks
Advance Preparation:
copy log sheets
Make a sheet of pictures that are different colors (you might include a
banana, an apple, a green clover, etc.); this is picture sheet A.
Gather pictures taken from space for picture sheet B.
laminate picture sheets
cut filters into 2" x 4" rectangle
cut poster board into 9" squares
**Find images to use for the picture sheets HERE.
Procedure:
- Show the campers picture sheet A under each colored filter and ask them
to guess what color each object is based on what they see through the
filters.
- Give each camper one of each colored filter, 4 craft sticks, and four
1" x 12" strips of poster board.
- Instruct the campers to cut each of their poster board strips into two
2" strips & two 4" strips.
- Campers should use these strips to create a frame around each of their
colored filters and then attach a craft stick to each for a handle.
- Display picture sheet A again. Have campers look at the sheet with each
of their filters and record what the images in the picture look like using
the intensity scale that follows:
0 = Not visible, 1 = Faint, 2 = Medium, 3 = Dark, 4 = Black.
- Discuss how filters work and their effect on what we see.
- Have campers look at picture sheet B, and predict how each image will
appear through the different colored filters.
- Now campers should test their predictions by viewing the images through
each filter and recording
what the images look like using the same scale they used in step 5.
- Discuss how remote-sensing systems use filters and why.
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