WorksheetsWhere do elements come from?
Total questions: 10
Worksheet time: 20mins
Name
Class
Date
1.
A young star is mostly made up of__________.
a)
Helium
b)
Hydrogen
c)
Lithium
d)
Iron
2.
The process of____________causes elements to be forced together through great heat and pressure.
a)
Nuclear Fission
b)
Nuclear Fusion
c)
Gas Reactions
d)
Star Collapase
3.
A star is continually experiencing two opposing forces; _______ and _______
a)
a planets gravity and pressure
b)
pressure exerted by other stars and gravity exerted by other stars
c)
it's own internal pressure and gravitational force
d)
none of the above
4.
An element which contains 28 protons and 36 neutrons would weigh________
a)
64 amu
b)
56 amu
c)
120 amu
d)
none of the above
5.
The heaviest element a single star can "cook"/create is__________
a)
Nickel
b)
Carbon
c)
Iron
d)
Copper
6.
Elements which are unstable, breakdown and release fast moving particles(beta, gamma etc) are said to be__________
a)
supernovas
b)
heavy elements
c)
radioactive
d)
fission induced
7.
The "s" process occurs when neutron strikes toward a newly formed nucleus are _________ and many years after a supernova have occured
a)
rapid
b)
slow
c)
somewhat fast
d)
none of the above
8.
Nuclear fission occurs when____________
a)
elements come together to form new elements
b)
an element becomes unstable, releasing particles and becoming a lighter element
c)
an element becomes unstable, absrobing particles and becoming a heavier element.
d)
None of the above
9.
It is clear from the article,"Where do chemical elements come from?, that the mass of any elements is derived from__________
a)
protons alone
b)
protons and electrons
c)
protons and neutrons
d)
electrons
10.
Heavy elements, those who's masses are greater than 250 amu are made made via the______process and _________
a)
r; normal stars
b)
s; supernovas
c)
r; supernovas
d)
s; normal stars
100 %
