Quiz 4 Flashcards
A _____ star system is a system of two stars that are gravitationally linked so that they orbit their common center of mass
Binary
What do we call a hydrogen nucleus that contains one neutron and one proton
Deuterium
The study of the propagation of pressure waves in the sun is called
Helioseismology
What is the name of the spacecraft that flew by and released a probe that crashed into the nucleus of comet Temple 1
Deep Impact
What do we call the continuous outflow of charged particles from the sun?
Solar Wind
The Tail of a comet consists of the nucleus and the
Coma
What makes up about 99.98% of the mass of an atom
nucleus
If a meteorite survives its fall to Earth it is called a meteoroid
False
The meteor shower seen in mid-November is called the Leonids. That is because
the radiant of the shower is located in the constellation Leo
A star’s parallax is 1 arcsecond, the star’s distance from us is
1 parsec
The 11 year sunspot cycle corresponds to
The period of change in the magnetic field of the sun
On the main sequence, the greater the luminosity of a star, the greater its
Temperature and Mass
The age of the solar system is about
5 billion years
What do we call the number of separate atomic and/or nuclear particles per unit of volume?
Particle Density
The layer of the sun that is normally visible to us is the
Photosphere
A prominence is
The ejection of material from the photosphere
The sun’s energy is generated by
Hydrogen fusion
The Eta Aquarids meteor shower that peaks in early may is associated with Halley’s comet
True
Most of the known asteroids
Can be found between the orbits of Jupiter and Mars
The discovery of asteroids depends on the fact that, compared with the stars, the asteroid
Move
The Hertzprung–___________ (H-R) diagram is a plot of luminosity (absolute magnitude) versus temperature (or spectral class) for stars
Russell
Stars on the main sequence that have a small mass are
Dim and Cool
The name of the 180 km wide crater off the Yucatan peninsula is anmed
Chicxulub
We can see a comet on every night of the year with a naked eye
False
What do we call the distance from the sun to an object that has a parallax angle of one arcsecond
Parsec
