Chapter 31.1 & 31.2 Flashcards
V: groups of stars by ancient cultures
constellations
V: something that collects and amplifies radio waves
radio telescope
V: the distance light travels in a year
light year
V: uses a prism or diffraction grating to separate light into it’s component wave lengths
spectroscope
V: stars form from large large clouds of gas, ice, and dust
nebula
V: broad band of stars from hot, bright stars to cool dim stars
Main sequence
V: when the equilibrium ends,the stars core contracts, the temp increases, and the star evolves into a…
giant star
V: when the core of a giant star no longer supports fusion leaving a hot dense core
white dwarf
V: a area in space that is so dense that nothing can escape it’s pull of gravity
black hole
V: the layer of the sun that emits light into space
photosphere
V: dark, cool areas in the photosphere where the suns magnetic field is weakened
sunspots
V: gigantic explosion of a star in which the temp within the collapsing star reaches 10 billion K, can evolve into a neutron star
supernova
V: produced by a collapsing star when protons and electrons in the stars core collide to form neutrons
neutron star
How did some of the constellations get their names
they were characters in stories, animals, and even tools
What is Orion belt?
a constellation of a great hunter and his two dogs
What are Orion’s dogs names?
Canis minor and Canis major
How many basic types of optical telescopes are there?
2
What is a refracting telescope?
a telescope that uses convex lens
What are the two names of the optical telescopes?
refracting and reflecting telescopes
What is a space telescope?
a telescope that is in space
Why are space telescopes better?
it does not have Earth’s atmosphere blocking it
Name two space telescopes
Chandra X-Ray Observation and the Spitzer Space Telescope
What are the 3 things spectroscopes can determine about a star?
temp, chemical composition, whether it’s moving towards or away from Earth
If a star is farther away from Earth what color will it be and what will it’s wavelength be?
it will be red and it’s wavelength will be spread out
If a star is closer to Earth what color will it be and what will it’s wavelength be?
it will be blue and it’s wavelength will be more frequent (closer)
Where do stars form from?
nebula
Where do the H and the R come from in a HR diagram?
Hertzsprung-Russell
What is a H-R diagram?
shows how bight a star is and what it’s temp is on a diagram
What is our Sun known as?
a giant star
What are the interior layers on the Sun?
- core
- the radiation zone
- the convection zone
What is the surface of the Sun called?
photosphere
What is the atmosphere of the sun composed of?
chromosphere and corona
Are Sun spots permanent features?
no; they appear and disappear
