space
is the sun a star?
yes
in which state of matter are the particles packed the closet together
solid
an organism that cannot produce its own food and must eat other plants/animals to get energy
true or false, opposite charges attract.
true
name all the planets in order
mercury, venus, earth, mars, jupiter, saturn, uranus, neptune.
density=....
M/V
define abiotic
a non living part of an ecosystem
two neutral objcts are brought toghther, they will...
do nothing.
define meteorite
a meteor that enters the earth's atmosphere and strikes the ground.
There is an equal number of protons and ______ in an uncharged atom.
Electrons
food chain
the symbol I=...
current
how is aurora borealis formed?
aurora borealis is caused by magnetic storms that have been triggered by solar activity, such as solar flares or coronal mass ejections.
how many elements are on the periodic table?
118
what is the mixture of gasses that surrounds the earth called
the atmosphere
vinyl and cat fur are rubbed togther, which material beocmes negatively charged?
vinyl will become negatively charged, (lower in the charge tendancy chart)
146
what is the process of turning a solid into a gas called?
sublimation
when the population of a species goes up in an area it could be from one of two reasons...
new births and immigration
in paralet circuts how do you solve for resistance?
1/RT=1/R1+1/R2+1/R3