Why do more massive stars age faster quizlet?
Why do more massive stars age faster? Because they have hotter cores, so nuclear reactions proceed faster. It is not massive enough to make it hot enough for further reactions. You just studied 12 terms!
What role does interstellar matter play in stellar evolution quizlet?
A less massive star will live longer because it consumes fuel at a slower rate than do more massive stars. Why is interstellar matter important to stellar evolution? Stars are born out of clouds of interstellar matter.
What property does the universe possess that will determine its final state?
chapter 16
| Question | Answer |
|---|---|
| Who is super cool? | Me!! |
| What property does the universe possess that will determine its final state? | The amount of undetected dark matter could sway the density of the universe above the critical density, and result in a “big crunch” possible outcome. |
What type of main sequence star is most likely to become a black hole?
They are the natural consequence of the evolution of massive stars. Neutron stars have an upper mass limit of 2 to 3 solar masses. A collapsed object of greater mass will continue to collapse indefinitely, forming a black hole.
How is interstellar matter distributed throughout space?
Interstellar matter is mostly gaseous, but about 1% is interstellar grains or dust. The grains are not distributed uniformly in space but are found in clumpy clouds. Some of the interstellar material is visible, sometimes through small telescopes, as nebulae.
How dense is interstellar space?
one atom per cc
Why does dust Redden starlight?
Why does dust redden starlight? It scatters optical and shorter-wavelength light. The reflection nebula is a cloud of dust. When light from a star encounters this cloud, the short wavelength blue light “bounces back” from the cloud towards us, and the longer wavelength red light passes through.
How much hydrogen is in interstellar space?
Interstellar Gas: Approximately 99% of the interstellar medium is composed of interstellar gas, and of its mass, about 75% is in the form of hydrogen (either molecular or atomic), with the remaining 25% as helium.
What temperature is interstellar space?
The average temperature of outer space near Earth is 283.32 kelvins (10.17 degrees Celsius or 50.3 degrees Fahrenheit). In empty, interstellar space, the temperature is just 3 kelvins, not much above absolute zero, which is the coldest anything can ever get.
How dark is interstellar space?
Interstellar space is dark very dark. You would only have starlight to see by and starlight light amplification vision systems exist. That far out perhaps two light years you would need a powered sealed environment. This implies you would have lights to see and be seen.
How many atoms are in interstellar space?
It has been calculated that there are roughly 0.25 atoms per cubic meter of interstellar space.
How many atoms per cubic meter are in space?
0.3 atoms
Are there stars in interstellar space?
Why is interstellar space important? The interstellar medium is where stars are made. Without it, we wouldn’t exist. If there weren’t thick and thin spots that condensed into thicker patches that eventually became stars, the whole universe would just be a cloud of boring, cold, lifeless gas.
What is interstellar dust?
They are responsible for the extinction and polarization of starlight and for scattering that produces reflection nebulae around dust-embedded stars; they also act as efficient radiators in the infrared, providing an important cooling mechanism for interstellar clouds and protostellar envelopes.
What is wrong with Earth in interstellar?
The Blight is a plague that has ravaged almost all the remaining food sources on Earth. By the time Interstellar occurs, the last crops of okra are dying off, leaving just corn as the only viable food source for humanity. Corn remains the only viable crop, resistant to the blight, that can be grown and harvested.
What color is space dust?
sapphire blue
What does space dust look like?
Cosmic dust is made of dust grains and aggregates into dust particles. These particles are irregularly shaped, with porosity ranging from fluffy to compact. General diffuse interstellar medium dust, dust grains in dense clouds, planetary rings dust, and circumstellar dust, are each different in their characteristics.
Is space full of dust?
The Universe is a very dusty place. Cosmic dust consists of tiny particles of solid material floating around in the space between the stars. It is not the same as the dust you find in your house but more like smoke with small particles varying from collections of just a few molecules to grains of 0.1 mm in size.
How dangerous is space dust?
Beyond damaging the lung health of astronauts, space dust also wreaks havoc on equipment and ventilation systems, which are also necessary for survival in space. In March of 2015, NASA conducted an ISS airlock experiment to test how space dust affects the lungs, hoping to identify how lungs perform in space.
Who said we are made of stardust?
Sagan
How did Einstein prove atoms existed?
Einstein’s theory was that that the particles from the pollen grains were being moved around because they were constantly crashing into millions of tinier molecules of water – molecules that were made of atoms.
Do atoms die?
Since an atom has a finite number of protons and neutrons, it will generally emit particles until it gets to a point where its half-life is so long, it is effectively stable. It undergoes something known as “alpha decay,” and it’s half-life is over a billion times longer than the current estimated age of the universe.