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WorksheetsStardust 3-5
Total questions: 17
Worksheet time: 8mins
Name
Class
Date
1.
What is the definition for Nuclear fusion?
a)
State of matter
b)
The process in which two atomic nuclei combine to form a larger nuclear releasing hude amounts of energy in the process
c)
Huge exsplosion
d)
cloud-like region of gas
2.
How are elements created in stars?
a)
Stars create new elements in their cores by squeezing elements together in a process called nuclear fusion. First, stars fuse hydrogen atoms into helium. Helium atoms then fuse to create beryllium, and so on, until fusion in the star’s core has created every element up to iron.
b)
all
of
above
of
above
c)
Huge explosion goes boom boom
d)
ne-yo
3.
What are the results of fusion in large stars?
a)
Big Boom
b)
c2
c)
Hydrogen fusion (nuclear fusion of four protons to form a helium-4 nucleus) is the dominant process the generates energy in the cores of main-sequences stars. … As a result, there is little mixing of fresh hydrogen into the core or fusion products outward.
d)
Lil Boom
4.
What are the results of fusion in large stars?
a)
Hydrogen
b)
c2
c)
Hydrogen fusion (nuclear fusion of four protons to form a helium-4 nucleus) is the dominant process the generates energy in the cores of main-sequences stars. … As a result, there is little mixing of fresh hydrogen into the core or fusion products outward
d)
Explosion
5.
Two small nuclei collide and fuse, forming a what?
a)
May be released
b)
A higher atomic number
6.
Two largher nuclei collide and fuse.forming what?
a)
A still large nucleus
b)
reaction that create the heaviest elements
7.
What elements can be produced by stars the size of the sun?
a)
The fusion connects with the wrong thing and explode
b)
Fusion in the early Universe produced hydrogen, helium, lithium, beryllium andboron, the first 5 elements in the periodic table. Other elements, from carbon to iron, were formed by fusion reactions in the cores of stars.
8.
Where are elements heavier than iron produced?
a)
The supernova will begin the rise until it explode
b)
All of the post-iron elements are formed in supernova explosions themselves. So much energy is released during a supernova explosion that the freed energy and copious free neutrons streaming from the collapsing core drive massive fusion reactions, long past the formation of iron.
9.
What elements may have formed in this supernova that would not have formed in a smaller star?
a)
The lightest elements (hydrogen, helium, deuterium, lithium) were produced in the Big Bang nucleosynthesis. According to the Big Bang theory, the temperatures in the early universe were so high that fusion reactions could take place. This resulted in the formation of light elements: hydrogen, deuterium, helium (two isotopes), lithium and trace amounts of beryllium.
b)
The lightest elements are, nitrogen, oxygen, gas, liquid, and solid.
10.
What is the definition of supernova?
a)
a big star that explodes
b)
a star that suddenly increases greatly in brightness because of a catastrophic explosion that ejects most of its mass.
11.
what is the definition of nebula?
a)
a big gas that appears in the sky that you only see at night
b)
it's a ;lil gas that can't be seen in the sky
c)
a cloud of gas and dust in outer space, visible in the night sky either as an indistinct bright patch or as a dark silhouette against other luminous matter.
d)
a gas of coud in outer space
12.
what is the definition of nebula?
a)
a big gas that appears in the sky that you only see at night
b)
it's a ;lil gas that can't be seen in the sky
c)
a cloud of gas and dust in outer space, visible in the night sky either as an indistinct bright patch or as a dark silhouette against other luminous matter.
d)
a gas of coud in outer space
13.
What occur in a star on a huge scale?
a)
nuclei fusion
b)
nuclear fusion
c)
fusion
d)
neclear
14.
What provides enough energy for the nuclear fusion?
a)
supernova
b)
supernovi
c)
supernove
d)
supernovel
15.
How elements form in stars
a)
its create new words in a heavy thing to add up
b)
Stars create new elements in their cores by squeezing elements together in a process called nuclear fusion. First, stars fuse hydrogen atoms into helium. Helium atoms then fuse to create beryllium, and so on, until fusion in the star's core has created every element up to iron.
16.
what is the definition for plasma?
a)
the colorless fluid part of blood, lymph, or milk, in which corpuscles or fat globules are suspended.
b)
an ionized gas consisting of positive ions and free electrons in proportions resulting in more or less no overall electric charge, typically at low pressures (as in the upper atmosphere and in fluorescent lamps) or at very high temperatures (as in stars and nuclear fusion reactors).
17.
an ionized gas consisting of positive ions and free electrons in proportions resulting in more or less no overall electric charge, typically at low pressures (as in the upper atmosphere and in fluorescent lamps) or at very high temperatures (as in stars and nuclear fusion reactors) is what?
a)
Plasma
b)
olives
c)
nuclei
d)
the sun
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