chapter 4 Flashcards
what electromagnetic radiation has the shortest wavelength
x-rays
which electromagnetic wavelengths can the human eye detect
orange light
what is the sun mostly composed of
hydrogen
what matter does the sun’s surface exist in
plasma
what are seething convective cells on the sun’s surface called
granules
what are severe solar storms that can disrupt telecommunications on Earth called
solar flares
solar wind is composed mostly of what high speed particles called
protons and electrons
is the temperature of the corona higher of lower that the temperature of the photosphere
higher
in what part of the sun are thermonuclear reactions believed to occur
core
what is the main use of solar energy at this time
the heating of homes and businesses
what is the sun called in Scriptures
the greater light to rule the day
what is a small percentage of the sun’s energy is in the form of neutral subatomic particles called
neutrinos
what grating is used in spectroscopes that produces a spectrum much like that of a prism
diffraction
what do the movement of sunspots indicate that the sun is doing what on its axis
rotating
is the temperature of the sunspot cooler or hotter than that of the regions on the photosphere that surround them
cooler
on average, a maximum number of sunspots occur every how many years
11
what is the layer of ionized particles in the earth’s atmosphere caused by solar wind called
ionosphere
what is an instrument that astronomers use to produce an artifical solar eclipse when observing the sun’s atmosphere
coronograph
what are streams of plasma material that rise up into and descend from the sun’s corona
prominences
in which of the sun’s zone, hot plasma rises to the surface , cools and descends into the sun’s interior again
convective zone
which cells are semi conductor devices used to produce electricity from sunlight
photovoltaic cells
what does the moon appear to be as large as the sun when viewed from the earth
the moon is smaller but closer
how do rainbows demonstrate that sunlight is composed of wavelengths from the entire visible electromagnetic spectrum
Each raindrop acts as a tiny prism refracting light
what evidence of the biblical principles that the heavens are “waxing like an old garment” is seen in the sun
the sun is loosing matter
what is the distance from the sun to the earth
150 million km/93 million miles
the diameter of the sun
1.4 million km
what is he distance from the crest of one wave to the crest of the next wave
wavelength
what is the astronomer’s tool that identifies chemical elements in an incandescent light source
spectroscope
what is the most abundant element in the sun
hydrogen
what is the element that was discovered in the sun
helium
where is the sun located
on one of the spiral arms of the Milky Way galaxy
what state is nearly all of the matter is the solar system
plasma
what speed do neutrinos travel
speed of light
what form does radiated energy of the sun travel in
electromagnetic waves
how long do sun spots usually last
days or weeks
what is one advantage of solar energy
freely available
what is the visible surface of the sun called
photosphere
what are the dark areas on the surface of the sun called
sunspots
what is the outer portion of a sunspot called
prenumbra
what is the darker inner portion of a sunspot called
umbra
what is a particularly violent event also known as a coronal mass ejection
radiative zone
what is the outer region of the sun’s atmosphere
chromosphere
what are the pointed jets on the chromosphere called
spicules
