Identify For each picture below, identify the material enclosing the sandwich as transparent, translucent, or opaque.

Use the following terms to create a concept map: light, matter, reflection, absorption, and transmission.

What are the three primary subtractive colors (or primary pigments)? What happens when you mix them?

What determines the color of a colored object? Explain why grass appears green.

What determines the color of an object?

An optical fiber has a diameter of 0.3 mm. How many fibers would be needed to form a cable with a square cross section, if the cross section was 1.5 cm on a side?

On a sunny day you are looking at the surface of a lake through polarized sunglasses. How could you use your sunglasses to tell if the light reflected from the lake is polarized?

Describe how a hologram is made .

Discuss how optical fibers are used to transmit telephone conversations .

Choose one of the countries in Southern Africa. Use what you have learned about its history, politics, art, and economics to create a poster illustrating how human systems have shaped it as a place. Posters should be visual and can include photos, graphs, charts, and maps.

Choose one ofthe countries in Southern Africa. Use what you have learned about its history, politics, art, and economics to create a poster illustrating how human systems have shaped it as a place. Postersshould be visual and can Include photos, graphs, charts, and maps.

Describe how the location of mineral resources has affected the development of cities in Southern Africa. Give examples.

Identify areas in Southern Africa where people are most likely to rely on wells to access groundwater. Why might people in these areas have health problems?

Use your mental map of Southern Africa to name the northernmost countries in the subregion.