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

Red, green, and blue light rays each enter a drop of water from the same direction. Which light ray’s path through the drop will bend the most, and which will bend the least? Why?

Copy and complete the following concept map about using light .

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

___________ occurs when light changes direction after colliding with particles of matter.

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

Is a mirror’s surface transparent, translucent, or opaque? How do you know?

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

What determines the color of an object?

Why does a black asphalt road become hotter than a white cement sidewalk in the same amount of sunlight?

Why does a black asphalt road become hotter than a white cement sidewalk in the same amount of sunlight?

If you wanted to detect x-rays coming from the sun, where would you place the detector? Why?

Given $\Delta$ABC ~ $\Delta$DEF and $\Delta$DEF ~ $\Delta$JKL, is $\Delta$ABC ~ $\Delta$JKL? Justify your answer.

A spherical rain drop of radius 1.0 nun has a charge of +2 nC. The electric field in the vicinity is 2000 N/C downward. The terminal speed of an identical but uncharged drop is 6.5 m/s. The drag force is related to the drop's speed by $F _ { \mathrm { d } } = b v ^ { 2 }$ (turbulent drag rather then viscous drag). Calculate the terminal speed of the charged rain drop.