6th Grade Science Final Flashcards
Condensation
change of a vapor or gas to a liquid
conduction
energy is transferred from particle to particle by direct contact
conductor
material that allows thermal energy transfer
Ex: copper, steel, sea water
convection
the transferring of energy in liquids and gasses by particles moving in currents
insulator
material that prevents thermal energy transfer
Ex: , wood, glass, rubber
kinetic energy
energy of motion
potential energy
stored energy
radiation
energy is transferred in waves and doesn’t need particles to move along
thermal energy
TOTAL amount of kinetic energy of ALL the particles in a system
thermal energy transfer
movement of thermal energy from a hotter area to a cooler area
cells
the smallest unit that can live on its own and that makes up all living organisms and the tissues
of the body
cell membrane
thin layer that surrounds both plant and animal cells, allows some substances to
pass into and out of the cell while blocking others, which means it is
semi-permeable
chloroplast
organelle where photosynthesis takes place, gets its green color from chlorophyll , only
found in plants
cytoplasm
jellylike substance that fills the cell, where the organelles are located
mitochondria
use oxygen and sugar (glucose) to provide energy for the cell (the mighty
mitochondria)
nucleus
controls what goes on in the cell, contains the cell’s genetic material (DNA)
organelles
structures found within cells
sensory neurons
nerve cells that take in information from the outside world and send it to the brain
arteries
vessels that carry blood away from the heart
blood cells
Carries food and oxygen to other cells
cerebellum
the part of the brain that controls movement/motion, balance, and ability to learn new
things
cerebrum
largest part of the brain that controls the senses (seeing, hearing, tasting, touching,
smelling), imagination and thoughts
digestive system
breaks down large food molecules into tiny food molecules that can move through
the intestine walls, into the blood, and then into each cell
involuntary muscle movement
move things a person does not normally control ex. muscles that
move food through your intestine, and heart
medulla
the part of the brain that controls involuntary actions, like breathing, digestion, and
heartbeat
nervous system
made up of the brain, spinal cord, and a network of nerves
order of the body system
cell, tissue, organ, body system
allele
a variation of a gene; some genes have 2 variations while others,like eye color, have
multiple variations
dominant
an allele that requires only one copy to be expressed
asexual reproduction
requires only one organism and results in offspring that are
genetically identical (a clone) to the parent
genotype
an organism’s allele combinations (Tt, TT, tt)
heterozygous
when you have both a dominant allele and a recessive allele for a trait (Tt).
homozygous
when you have the same two alleles for a trait, either two dominant (TT) or two
recessive (tt)
phenotype
the physical appearance of an organism
recessive
an allele that requires two copies to be expressed
sexual reproduction
offspring receive genetic information from two parents (in humans 23
chromosomes from each for a total of 46) so they are not genetically identical
to either parent
climate
average atmospheric conditions in a general region over a long period of time (records kept
in 30 year increments), what we expect
climate change
a shift in worldwide climate patterns, including warming temperatures,
increasing/decreasing precipitation totals, and more frequent extreme weather
events, like hurricanes
fossil fuel
a substance formed from ancient organic material that is used to generate energy, such
as coal, oil, and natural gas
greenhouse gasses
the substances in Earth’s atmosphere that trap heat including carbon dioxide,
methane, nitrous oxide, fluorinated gasses, water vapor
greenhouse effect
the Earth’s atmosphere trapping heat from the sun which keeps Earth just the
right temperature to support life
solar radiation
energy from the sun
weather
atmospheric conditions on a specific day in a specific area; what we see day to day
observation
something that can be detected or measured by the senses
evidence
data or information that supports or refutes a claim
data
- information that is gathered
claim
possible answer to a big question or a solution to a problem
reasoning
justification that links the claim and evidence