Light Fact 1: Light is a form of energy (energy is the ability to make things change),
Fact 2: it travels in a waveOR?In a particle form called a “photon,” which is a bundle of energy.
Fact 3: Light travels in a straight line and Fact 4: obeys the Law of Reflection Angle of incidence = Angle of reflection In other words, light gets reflected from a surface at ____ _____ angle it hits it. The same !!!
When not reflected… What ever cannot be reflected is absorbed. • This makes objects appear black • This makes objects get hot • What are some examples?
Fact 5: Light not only reflects, but also refracts(Refracts: when energy bends as it passes through something) Why? Light passing through a block of ice
Fact 6: Light is fast.Speed of light is 300,000,000 m/secSpeed of sound is only 340 m/sec
Rays of light Fact 7: Shadows are places where light is blocked, absorbed and reflected, by something in the way • Shadows
Fact 10: When you see a color, the object has absorbed all of the other colors of the rainbow • Fact 11: The three primary (or addititive) colors of light are red, green, blue
Fact 12: the subtractive colors (in pigment molecules) are yellow, cyan, and magenta
Quick Quiz • True or False: Light is slower than sound. • When waves bounce off of something it is called _____________? • The additive colors of light are _________, __________, and ___________. • When light is ___________ it converts from light energy to heat.
Is this possible? • Lightsaber • Blaster • Battle of Naboo