Light!Light! Energy! Color! Jackie Lasek, Tim Lorelli, Kirsten Rossi-Porcelli ED , Summer 2008 Dr. Sharon Anne O’Connor-Petruso

Unit Overview Scavenger Hunt How does light travel? All about shadows What is the color of light? Color mixing Color perception

Scavenger Hunt How does light effect the world around us? What would our world be like without light? What are we really seeing when we look at an object? What is color? Find out at How does light travel? What makes light change directions? Find out at What is photosynthesis? How does light help us eat? Find out at Filamentality site:

Scavenger Hunt How does light effect the world around us? What would our world be like without light? How does light effect weather? Find out at What is a shadow? Find out at What are the different types of energy? Find out at Filamentality site: Read this blog!blogWatch this!this

Where do shadows come from? Where is my shadow?

Shadow Facts Whenever light is blocked, a shadow is formed. Did you know that a shadow starts where the light is blocked so your shadow starts at your feet! When the sun is directly above you, there is little to no shadow because the light from the sun is hitting all the area around you. The length of a shadow constantly changes as the earth rotates on its axis away from the sun. In the morning, your shadow is longer than you! In the afternoon, it is much smaller than you! Whenever light is blocked, a shadow is formed. Did you know that a shadow starts where the light is blocked so your shadow starts at your feet! When the sun is directly above you, there is little to no shadow because the light from the sun is hitting all the area around you. The length of a shadow constantly changes as the earth rotates on its axis away from the sun. In the morning, your shadow is longer than you! In the afternoon, it is much smaller than you! Rays of light

Will you trace my shadow? Morning… Noon… & Night!

Which shadow is longer? We can analyze the table to find out! JenKatie 10 AM PM5760

Measurement of shadows Height (inches) Which shadow is longer? We can analyze the graph to find out!

A rainbow A prism Color Spectrum What is the color of light?

Red Orange Yellow Green Blue Indigo Violet Color Spectrum What is the color of light?

Adding blue and red makes magenta Adding blue and green makes cyan Adding all three makes white again Adding red and green makes yellow Color Mixing Looking at a color through a different colored lens changes the color’s appearance. Please see our Mystery Box! Mixing colors results in a variety of new colors. Virtually all colors are a mixture of the primary colors of light (red, green, blue).

What colors can you make?

Color Perception How do we see color? How do we see color? Color originates in light. Humans perceive sunlight as colorless. Color-detecting equipment inside the eye is called a “cone.” The number of visible colors is defined by the kinds of cones in the eye. When light shines on an object, the eye receives the reflected light and sends a message to the brain to see the color.

We see things because they reflect light into our eyes! Science Book

Do animals see color as we do? HumansDogs Monkeys see color just like us! Did you know that bulls are color blind? They go after the cape because it’s moving, not because it’s RED! Bees have the best color perception of all! They see colors that we can’t see!