H.R. Diagram
where is the highest temperatures on the hr diagram (x axis)
on the left
what kind of change is burning
Chemical
what is the charge of protons
positive
What kind of boundaries are these
—-><—-
Convergent
what is net force?
the sum of all forces acting on an object in a single plane
where are the brightest stars on the hr diagram (y axis)
at the top
What is a chemical reaction
Occurs when 2 or more molecules interact and the molecules change into a new substance
what is the atomic number
Protons and electrons
what type of boundary is this
<—- ——>
Divergent
what is the equation for net force?
F=M•A
what color are the brightest, hottest stars
blue
what is a physical change
a type of change where the physical properties of matter change. During a physical change, neither the composition nor the chemical nature of matter is changed.
how do u calculate the neutrons of an atom
Atomic mass - atomic number
What is Subduction?
the sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.
what is the net force of this
20—><—20
0
what kind of star is our sun
main sequence
what is a chemical change?
change of materials into another, new materials with different properties and one or more than one new substances are formed
How many energy shells would a element in period 9 have
9
what do transform boundaries usually cause?
earthquakes
what is the netforce of this
80—><—-15
65—>
are the red giants cold or hot, bright or dim
Cold, Bright
What is ice melting an example of
physical change
how many protons does hydrogen have
1
what do convergent boundaries usually form?
Mountains and Volcanoes
what is force
a push or a pull