Elements from Stardust Quiz
What other elements can you find in the sun?
Beryllium, Oxygen and carbon
What is the fuel that powers the sun?
Hydrogen
what happens when you stick to protons together?
1 proton turns to a neutron to make hydrogen
every second the sun burns ___ _________ tons of of hydrogen
1) six 2)million
when a star dies it gets ______ instead of ______
1)hotter 2)cooler
when you burn elements it gives you a certain _____. The _____ tells you what elements the stars are made of.
1/2 color
what is the temperature of the sun's core?
15 million degrees celcius
How do elements in the sun form.
2 Hydrogen nuclei fuse making helium nuclei. 2 helium nuclei fuse to form beryllium nuclei. A helium nuclei fuses with a beryllium nuclei to form carbon nuclei. Finally a helium nuclei fuses with a carbon nuclei to make a oxygen nuclei.
what is the surface temperature of the sun?
6,000 degrees celcius
What is a nebula?
A Nebula is an interstellar cloud in outer space between the stars, that is made of dust, Hydrogen and Helium gas, and plasma. It is the birthplace and graveyard of stars.
How is a nebula formed?
A Nebula is formed when interstellar medium collapses and clumps together.
What is a supernova?
A supernova is when a star "dies" creating a massive explosion that breaks the star into a bunch of different pieces. The explosion produces temperatures up to 1 billion degrees celsius.
A supernova provides enough energy for the nuclear fusion reactions that create the heaviest _______.
Elements
True or False? Stars the size of the sun can produce heavier elements than oxygen.
False
What does nuclear fusion create inside stars?
It creates heavier elements because it combines smaller nuclei into larger nuclei.
What is Plasma
Plasma is when atoms are stripped of their electrons and their nuclei are packed close together.
the closest star to earth is
Proxima centauri
What conditions in the sun allow the plasma state to exist?
Since stars are made of mostly hydrogen, the hydrogen exists at extremely high pressure and heat. Because of these conditions, hydrogen can not exist as a solid, liquid or gas, so it is plasma. (Plasma only occurs under extreme heat and pressure.)
how long can stars live?
as long as they have enough of a supply of hydrogen to burn
The production of ____ is a sign of a chemical reaction.
gas
What are the two most common elements in the sun?
hydrogen (protium) and helium
In stars more massive than the sun, fusion continues until the core is almost completely _____.
iron
How far away is Proxima Centauri?
it is 10,000 times the distance from earth to neptune; 4.2 light years away
What is a light year?
it is how far light travels in a year
What is nuclear fusion?
it is when two atomic nuclei combine to form a larger nucleus releasing huge amounts of energy.
molecules that have carbon are called
organic molecules
