Know about the Sun’s Energy Know about the Sun’s Core, Atmosphere, and Sunspots Comprehend the...
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Transcript of Know about the Sun’s Energy Know about the Sun’s Core, Atmosphere, and Sunspots Comprehend the...
Know about the Sun’s Energy
Know about the Sun’s Core, Atmosphere, and Sunspots
Comprehend the Solar System’s Structure
The Sun and It’s Domain
Lesson OverviewThe Sun’s Energy The Sun’s Core, Atmosphere, and SunspotsThe Solar System’s Structure
The Sun’s Energy Hermann von Helmholtz
and Lord Kelvin proposed that the source of the Sun’s energy was a very slow gravitational contraction
Scientists began considering that mass can be converted to energy, and energy into mass
The Nuclear Fusion Power of the Sun An atom’s nucleus is made up of protons, positively charged
particles; and neutrons, particles with no electrical charge In nuclear fusion, two nuclei combine to form a larger
nucleus. They “fuse.” Primary source of the Sun’s energy is a series of nuclear
fusion reactions
The Sun’s Core, Atmosphere, and SunspotsThe equilibrium conditions in the Sun are known as
hydrostatic equilibrium Great pressures at the center of the Sun pushes protons
close enough together that hydrogen fusion can take place
Fusion reactions in the core provide a heat source
The Three Modes of Solar Energy Transfer
1. Conduction is the transfer of energy in a solid by collisions between atoms and/or molecules
The Three Modes of Solar Energy Transfer,2. Convection occurs
when the atoms of a warm liquid or gas move from one place to another
3. Radiation is the transfer of energy by electromagnetic waves
The Three Layers of the Sun’s Atmosphere 1. Photosphere is the visible part of the Sun and that
part of the solar atmosphere that emits light 2. Chromosphere is the region between the
photosphere and the corona3. Corona is the outermost portion of the Sun’s
atmosphere
The Solar Wind Solar wind is a continuous
outflow of charged particles from the Sun
Moving at about 249 miles per second near Earth, it plays a significant role in space weather activity
The Impact of Sunspots and Solar Flares on Earth’s ClimateSunspots are dark spots appearing on the Sun’s surface caused by the Sun's
magnetic field welling up to the photosphere, the Sun's visible "surface". A solar flare is an explosion near or at
the Sun’s surface, seen as an increase in activity such as prominences (bulges)
http://www.youtube.com/watch?v=nmDZhQAIeXM
The Solar System’s StructureThe Sun more than 99 percent of the Solar
System’s mass 10 times larger in diameter than Jupiter Sun’s diameter is about 862,000 miles
How the Solar System Formed Evolutionary theory - how the solar system came
to be as part of a natural sequence of eventsCatastrophe theory refers to an unusual event Modern evolutionary theories - the formation of
the Solar System resulted from gravitational forces and pressures on heat and mass
Classifying Objects in the Solar SystemFour innermost planets – Mercury, Venus, Earth
and Mars – are called the terrestrial planets Next four planets – Jupiter, Saturn, Uranus and
Neptune – are called the Jovian planets Pluto is now considered a dwarf planet
Classifying Objects in the Solar System, A planet is a celestial body
that: Orbits the SunHas sufficient mass for
its self-gravity to overcome rigid body forces so that it assumes a nearly round shape
Has cleared the neighborhood around its orbit
Sun BINGO ChallengeB I N G O
Catastrophe Theory Solar Wind Jovian Planets Terrestrial Planets Solar Wind
Solar Flares Chromosphere Modern Evolutionary Theories
Convection Sunspots
Conduction Corona FREESPACE
Helium Solar Flares
Dwarf Planet Equilibrium Hydrogen Hydrostatic Equilibrium
Neutrons
Evolutionary Theories
Radiation Protons Nuclear fusion Photosphere
Know about the Sun’s Energy
Know about the Sun’s Core, Atmosphere, and Sunspots
Comprehend the Solar System’s Structure
The Sun and It’s Domain