How can we help?

You can also find more resources in our Help Center.

63 terms

PVMS Science Grade 8 Academic Vocabulary

STUDY
PLAY
asteroid
any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)
astronomy
the branch of physics that studies celestial bodies and the universe as a whole
ATOMIC MASS
AVERAGE OF THE MASS OF ALL ISOTOPES FOR A SPECIFIC ELEMENT
ATOMIC NUMBER
NUMBER ON THE PERIODIC TABLE THAT REVEALS AN ELEMENT'S # OF PROTONS
carbon dioxide
gas taken in by plants so they can make food
cell wall
thick outer covering of plants cells
cellulose
material that makes up the cell wall
central vacuole
large water storage vessel that gives the plant strength to stand upright
chlorophyll
chemical in plant cells that captures the sun's energy
chloroplasts
plant organelle which makes chlorophyll and makes food
colloid
mixture with properties between those of a solution and fine suspension
comet
space object made of dust and rock particles mixed with frozen water, methane, and ammonia that forms a bright coma as it approaches the Sun
compound
2 or more different atoms bonded together to form a new substance
density
amount of matter in a given volume; mass / volume
dependent variable
factor being measured or observed in an experiment
Earth
Third planet from the sun
electron
a stable elementary particle that is negatively charged and orbits the nucleus of an atom
ELECTRON
PARTICLE OUTSIDE THE NUCLEUS THAT HAS A NEGATIVE CHARGE
fusion
Nuclear process where two Hydrogen atoms combine to form helium and release energy
galaxy
a collection of star systems that have a black hole in its center
glucose
chemical name for food produced by photosynthesis
gram
small metric unit that measures mass
gravity
Force of attraction among all objects
heterogeneous
substance where contents are not evenly distributed; EX: ice cream sundae
homogeneous
substance in which all contents are equally distributed throughout; uniform; EX: Milk
independent variable
the factor that is changed in an experiment in order to study changes in the dependent variable
ION
ATOM WITH SOME TYPE OF CHARGE
Jupiter
Largest planet in the solar system
Mars
Fourth planet in the solar system
mass
amount of matter in a substance
mass
the amount of matter an object contains
matter
anything that takes up space and has mass
Mercury
Planet closest to the sun
meteorite
stony or metallic object that is the remains of a meteoroid that has reached the earth's surface
milliliter
small metric unit that measures volume
mixture
substance of 2 or more blended substances without fixed proportions & without chemical bonding
molecule
smallest possible amount of a compound
nebula
an immense cloud of gas (mainly hydrogen) and dust in interstellar space
NEGATIVE
CHARGE OF AN ELECTRON
neutral
a particle, object, or system that lacks a net charge
NEUTRAL
CHARGE OF AN ATOM THAT HAS AN EQUAL NUMBER OF PROTONS & ELECTRONS
NEUTRON
PARTICLE IN A NUCLEUS THAT HAS NO CHARGE
NUCLEUS
REGION OF AN ATOM THAT CONTAINS PROTONS AND NEUTRONS (EXCEPT HYDROGEN)
nucleus
the center region of an atom where protons and neutrons are located; also a cell structure that contains the cell's genetic material
oxygen
gas given off by plants while they make food
photosynthesis
name of process through which plants make food
Pluto
Planet (major OR minor) that is usually farthest from the sun
POSITIVE
CHARGE OF A PROTON
proton
a subatomic particle having a positive charge and which is found in the nucleus of an atom
PROTON
PARTICLE THAT DETERMINES WHAT ELEMENT AN ATOM IS
pulsar
a spinning neutron star that emits rapid pulses of light
quasar
a "quasi-stellar" object; a star like source of light that is extremely far away; one of the most powerful sources of energy in the universe
Saturn
This planet has the most complex ring system
solar wind
A stream of electrically charged particles that continually stream out from the sun
solution
homogeneous mixture of 2 or more substances where none settle out
spectroscope
an instrument that uses a prism to separate and catalog light wavelengths
spring tide
the tide of increased range that occurs twice monthly at the new and full phases of the Moon
supernova
a star that explodes and becomes extremely luminous in the process
Uranus
Planet which rotates on its side (axis is tilted 90 degrees)
variable
an event, condition, or factor that can be changed or controlled in order to study or test a hypothesis in a scientific experiment
Venus
Second planet from the sun
volume
amount of space a substance takes up
weight
measure of the pull of gravity on a substance