Presentation on theme: "DO NOW In your notes… answer the following question using bullet points: –What do you know about light? Allows us to see Allows plants to make food Causes."— Presentation transcript:
DO NOW In your notes… answer the following question using bullet points: –What do you know about light? Allows us to see Allows plants to make food Causes sunburn Form of energy
Properties of Light
Essential Question How do astronomers learn/study what is beyond our atmosphere? Objectives: Investigate the properties of light Explain the role of light in astronomy
Light is the common term for electromagnetic radiation traveling through space as waves. Speed of light = 3.0x10 8 m/s
Creation of light Light can be created in 3 ways: 1.The Sun 2.Light Bulbs – Electricity or batteries 3.Chemicals – Fireworks, explosion, chemical reactions
Properties Refraction The bending of light as it passes between materials of different optical density
Reflection The abrupt change in direction or bouncing off of a wave
A continuum of all electromagnetic waves arranged according to frequency and wavelength Wavelength – Length of the wave Frequency – how often the wave occurs in a given time
Color Visible Light Spectrum (ROY G. BIV) White light is a mixture of every color of the rainbow Black is the absence of color Observed color – the color seen is reflected back to your eyes
Station Directions Station 1 – Penny in Dish Pencil and Ruler Station 2 – Flame Test Station 3 – Spectroscope Station 4 – Lenses Station 5 – Polarized Paper Station 6 – Electromagnetic Spectrum Packet READ THE DIRECTIONS!!
Safety Concerns Goggles MUST be worn by all students at Station 2 for the entire duration of the investigation! Long hair must be pulled back!
If there arent any questions…. BEGIN THE INVESTIGATION!!!