1. Energy Energy = ______________________ – Waves carry energy from one place to another – Light and sound both move in Waves

2. Characteristics of Waves Crest - ____________________ Trough - ____________________ _____________ = distance from crest to crest Amplitude = Height of the wave Frequency = ______________________

3. Wave Diagram

4. Light Light - form of energy that travels in waves – light travels in _____________= RAYS – Beam ___________________________________ – Speed of Light = 186,282 miles/ sec

5. Light Visible light = light we see _______________ – red – orange – yellow – green – blue – indigo – violet

6. Light cont. Ultraviolet light = ______________that we can’t see Infared light = ________________of light we can’t see

7. What happens when light strikes a surface? 1. Reflection - _______________off a surface – ex. Mirror

8. – Refraction - ________________when it travels through a substance Ex. Water = slows light – image appears to be closer than it is.

9. Color Color = ___________ of a wavelength of light – visible light Visible = ROYGBIV

10. ____________- triangular shaped objects made of clear glass – _____________into individual wavelengths – ROYGBIV

11. Sound Form of energy that ________________ - million times _________ than Light -Made by _________________________ -______________ best through ___________ - __________ amplitude = louder sound

12. Electrical Currents Conductors - materials that _________________________________ – metals, copper, gold, iron – allow electrons to flow through

13. Magnetic Fields Each end of a magnet has a __________ Pole = ____________________________ – ________ poles = same = they _______each other – _________ poles = _________ each other + and -

14. __________ = any piece of stone, metal that attracts iron or steel Magnetism = property of all matter only some materials have a strong enough magnetism to be noticed

15. cont The magnetic force = _________ at the poles ___________ = create magnetic pull When a magnet is heated or hammered the magnetic field of the electron return to their random positions

16. Insulators _________________= materials that electricity can’t travel through well. Ex. Rubber and Plastic= coating on a wire or plug.

17. Batteries Batteries = change ________energy to ________ energy - made of two metals and an acid acid _________ ___________ from one metal and adds it to another One metal becomes positively charged One is negatively charged

18. Circuit Circuit = ________ __________ of electricity flows through Usually contains a battery (energy) source, switch, and resistor (light) switch = open= electricity cannot flow switch = closed = electricity can flow