1. Heating the Earth
Energy From the Sun

2. Where We Get Our Energy
The Sun is a major source of energy for Earth.

4. Forms of Energy
Different forms of energy include heat, light, electrical, mechanical, sound, nuclear, and chemical.

6. Electromagnetic Energy
Different forms of electromagnetic energy have different wavelengths.
Examples of electromagnetic energy are:
microwaves
infrared light
visible light
ultraviolet light
X-rays
gamma rays.

8. Electromagnetic Spectrum
The entire range of radiant energy, including for example, X-ray, visible light, infrared radiation, radio waves, etc.
The full set of waves that can travel through space; includes not only visible light but shorter waves, such as X -rays, and longer waves, such as radio waves

10. Changing Energy
Energy is transformed in many ways.

12. Changing Energy Energy can change from one form into another
In the process some energy is always converted to heat.

14. Conservation of Energy
Energy cannot be created or destroyed, but only changed from one form into another.

15. Heat Energy
The energy of a material due to the random motion of its particles.
Also called thermal energy.
“Heat" is used when energy is transferred from one substance to another.

16. Heat Energy Explains Phases of Matter
The motion of particles (atoms & molecules) helps to explain:
the phase (states) of matter
changes from one phase to another.

18. Phases (states) of Matter
Gases have neither a determined shape nor a definite volume. Gases assume the shape and volume of a closed container. 
Liquids have a definite volume, but take the shape of a container.  
Solids have a definite shape and volume. Particles resist a change in position.

21. Heat Energy Moves Heat can be transferred through:
matter by the collision of atoms and/or molecules (conduction)
through space (radiation.)
In a liquid or gas, currents will cause the transfer of heat (convection.)

23. Heat Energy Moves
Heat moves in predictable ways, flowing from warmer objects to cooler ones, until both reach the same temperature

25. Heat Moves Through the Atmosphere
The transfer of energy within the atmosphere results in formation of regions of different densities.
These density differences result in motion.

26. Heat & Density
In fluids (liquids and gases), less dense (warmer) substances can rise and more dense (cooler) substances can sink.

28. Heat Movement & Density in the Atmosphere
The transfer of heat energy within the atmosphere occurs as a result of radiation, convection, and conduction.
Density differences are the basis for many Earth phenomena, including cloud formation and the formation of atmospheric storms.

30. Heat Movement & Density in the Atmosphere
Heating of Earth’s surface and atmosphere by the Sun drives convection within the atmosphere and oceans, producing winds and ocean currents.

32. Uneven Heating
Insolation (Incoming solar radiation) heats Earth’s surface and atmosphere unequally due to variations in:
intensity (caused by variations in angle of incidence which vary with time of day, latitude, and season);
characteristics of the surface materials absorbing the energy (such as color, texture, transparency, states of matter, and specific heat); and
duration which varies with seasons and latitude.

33. http://ithacasciencezone. com/earthzone/lessons/07meteor/insolation

34. Weather & Seasons Seasons and weather are NOT the same thing
Seasons are caused by:
Earth’s tilt
Earth’s revolution by around the Sun
Resulting in the Earth getting different intensities of energy from the Sun (heat & light) at different times of the year

35. Weather & Seasons
Seasonal changes in weather can be explained using concepts of density and heat energy. These changes include: the shifting of global temperature zones, the shifting of planetary wind and ocean current patterns, the occurrence of hurricanes, monsoons, rainy and dry seasons, flooding, severe weather, and ozone depletion.

36. Big Science Idea:
The atmosphere is an ocean of air that extends hundreds of kilometers about the Earth's surface. 
It is divided according to temperature into four layers - the troposphere, the stratosphere, the mesosphere, and the thermosphere. 
The lowest layer, the troposphere is where air masses form. 
Air masses have different characteristics because the areas over which they form receive different amounts of heat energy from the sun.
The uneven heating of Earth’s surface is the cause of weather.

38. Let’s Review:

39. References http://www.earth2class.org
www12.mawebcenters.com/coltslaboratories/gloss.ivnu

40. References www.riverdeep.net/current/2002/01/010702_light_tg.jhtml

41. References