1. Electromagnetic Energy

2. Something(s) to think about…
What is meant by “breaking the sound barrier”?
Why is the sky blue?
Why can we see light before the Sun rises? And after the Sun sets?

3. All energy travels in waves.
Energy is used to describe the amount of work that can be done by a force! (Physics)
All energy travels in waves.

4. Types of Waves Sound, Ocean, Electromagnetic
Examples of Electromagnetic Energy
X-ray, Microwaves, Visible Light

5. Parts of a Wave
Crest
Wave Length
Trough

6. The # of wavelengths that pass a point per second.
Wave Frequency
The # of wavelengths that pass a point per second. 1 2 3

7. INcoming SOLar radiATION
Sun
A major source of energy for Earth is radiation from the Sun.
The Sun produces energy by the process of _______ ______.youtube
Energy from the Sun is called ______________
INcoming SOLar radiATION
nuclear fusion
INSOLATION

8. Electromagnetic Energy All energy that can travel through space.
Does not need a medium (Solid, Liquid, Gas)
All matter gives off electromagnetic Energy, including Humans and Desks.

9. Temperature when all particles stop moving.
I. Absolute Zero
Temperature when all particles stop moving.
Therefore, objects warmer than 0 Kelvin must be radiating electromagnetic energy.
(0 on Kelvin scale)
(-273º on Celsius Scale)
Pg#13 ESRT

10. ESRT Pg 14…
**Electromagnetic energy is distinguished from one another by __________.**
wavelength

11. Electromagnetic SpectrumX
Rays
Gamma IR
Short Wavelength
High Frequency
Long Wavelength
Low Frequency
Visible Light (Roy G Biv)
Visible light is a small part of the Spectrum.
But the only energy we can see!!!

12. Regents Questions

13. Sound Barrier Video Clips
Please write down your observations and inferences about what is happening during each of the following video clips.

14. Breaking the Sound Barrier #1
Many jets breaking the sound barrier:

15. Breaking the Sound Barrier #2
Atlas Rocket breaking the sound barrier:

16. Approximately 1 mile in 5 seconds!!!!!
Sound waves travel 768 mph!!
Approximately 1 mile in 5 seconds!!!!!

17. What is meant by “breaking the sound barrier”?
In the space provided write down what is meant by “breaking the sound barrier”?
Please use the words “speed” and “sound waves” in your answer.

18. Something(s) to think about…
What is meant by “breaking the sound barrier”?
Why is the sky blue?
Why can we see light before the Sun rises? And after the Sun sets?

19. Doppler Effect
BLUE TOWARD RED AWAY

20. 1. Refraction
- Bent energy waves that pass through materials of varying densities causing wave direction to change.

21. 2. Reflection
When energy waves bounce off a material.

22. Crater Lake Reflection

23. CRATER LAKE NATIONAL PARK

25. When Energy bends in various directions.
3. Scattered:
When Energy bends in various directions.

26. 4. Transmitted
Energy that
passes through
a material.
Ex: Windows

27. 5. Absorption
Energy taken into a material.
Ex. A Sponge

28. 1. Surface Color - Dark Colors absorb
more energy quickly & quickly re-radiate more energy than light colors.
Energy
Source
Light Colors
Dark Colors

29. Rough texture Smooth texture 2. Surface Texture
____________ increases absorption & re-radiation. Ex- Wool, Land.
____________ increases reflection and decrease absorption & re-radiation. Ex- Mirror, Water
Rough texture
Smooth texture

30. Why are Highways “Black” & the Road Surface “Rough”?

33. Let’s think… 1. Why is the sky blue? 2. How can we see the Sun
Work in pairs to discuss possible explanations for the following questions:
1. Why is the sky blue?
2. How can we see the Sun
before it rises?
**Each answer must include one of the following: Refraction, reflection, scatter, transmit, or absorb.

34. Why is the sky blue?

35. Why is the sky blue? Molecules in the air scatter blue light from the sun more than they scatter red light.  When we look towards the sun at sunset, we see red and orange colors because the blue light has been scattered out and away from the line of sight.

36. Blue Light is Scattered in the Atmosphere.

37. Refraction enables us to see the Sun below the horizon.

38. What type of energy interactions are occurring and what properties are effecting the energy interactions?
Absorbed
Transmitted
Reflected

39. Name one type of electromagnetic energy (USE PAGE 14 ESRT)
2. Electromagnetic energy is distinguished from one another by _____________.
3. Good absorbers of energy are good ___________ of energy.