Exam 1 Flashcards
Particle radiation from the sun is potent ion ally much more hazardous outside the earths
Magnetic field
The suns activity is closely related to
Sunspot number
Radio blackouts are caused by
Outburst solar flare
Geomagnetic storms range from
G1-G5
Solar radiation storms vary from
S1-S5
Radio blackouts vary from
R1-R5
Suns mass in the solar system
99.8%
3 types of planets
Terrestrial
Gaseous
Dwarf
Earth is ____ the mass of the sun
One millionth
Largest planet
Jupiter
Smallest planet
Mercury
Planets outside the solar system were found by
Gravity towards other stars
Most eccentric planets orbit
Pluto
1 AU
Sun to earth
70%
25%
5%
Hydrogen
Helium
Other stuff
Early universe
H2
He
75%
25%
Collapsing cloud that stars form in is often caused by a nearby exploding
Supernova
Hydrogen fusion into helium requires the core temp to be
10^7 K or higher
Theoretical lifetime of the sun
5 billion years
Neutron stars are composed of
Neutrons
Ends as a white dwarf
Red giant
Shortest lifespan
Massive star, red supergiant
Charged particles
N
P
He
Comets are made of
Ice and dust
Types of asteroids
C
S
M
Brightest asteroid
S
Most asteroids are located between
2AU - 3.5AU
Beyond the planets
Oort cloud
Greatest damage to spacecraft
Small objects
Albedo
Reflectivity of light
Planet with little to no atmosphere
Mercury
The suns charged particles follow the suns
Magnetic field lines
Escape velocity
Greatest near larger planets
Planet with the highest escape velocity
Jupiter
Two types of radiation
UV
GCR
Ionizing radiation in the electromagnetic spectrum includes
UV
X ray
Gamma
Solar wind is made of
Protons and electrons
SPEs
Large outbursts from the sun
The peak in the suns emission is in the
Visible band
Green yellow color
Solar activity cycle
11 yrs
Larger number of dark spots on the sun implies
Solar activity levels in the sun
Energy in the sun is produced by
Fusion of H to He
For each helium atom produced by H_____ electron neutrinos are generated
4