Terms in this set (100)
__are the most basic building blocks of matter and are the smallest part of an __
There are three basic particles in the atom ___ neutron, and ____
A __ is composed of 2 or more __ chemically combined
___ are pure substances that cannot be simplified and made up of one kind of ___
mixtures can be separated by physical means such as __ sifting, or ___
__________ are not uniform and substances can be visibly distinguished
___________ are uniform and substances cannot be visibly distinguished
The atoms or molecules of a ___ form a pattern that only allows
In a __ the atoms or molecules move about freely and collide randomly
An Atoms identify is directly related to the number of __ and can be used to predict the __
protons, chemical reativity
The __ in group __ are the most reactive metals
Alkali metals, one
The __ is group __ are the most reactive nonmetals
The __ is group __ are the least reactive metals
noble gases, eighteen
__ lose electrons and __ gain electrons
__ don't change the chemical composition such as size, shape, and __
Physical Changes, phase
As long as the substance is boiling the temperature of the liquid remains __
Density is a __ property that describes the relationship between __ and volume
__ describe how a substance is going to react with other substance such as oxygen and acids
A __ results in the formation of a new substance such as a __ or gas
chemical change, precipitate
Reactions occur at different rates, based on concentration, temperature, __, and the presence of a __
surface area, catalyst
__have a pH of less than 7 and the __ have a pH of more than 7
The ___states the number of atoms and mass stays the same no matter how they are arranged
Law of Conservation of Matter
__are replaced through natural process at a rate that equal to or greater than the rate at which they are being used
__are exhaustible because they are being extracted and being used at a faster rate than they are formed
Salinity in ocean waters is increased by __ or by freezing of sea ice and decreased as a result of rainfall, __, or the melting of ice
__ all over the world are regulated by the heat by the oceans
The__is the continuous movement of water in and around the earth and is driven by the __
water cycle, sun
A __ is the portion of land that drains that drains into a river and its tributaries
__ are areas where fresh and salt water mix producing variations in salinity and high biological activity
__ happens when warm surface water near coastal areas is blown offshore by winds causing cooler nutrient rich water to rise
Cold water with low __ and high __ hold the most amounts of ocean gases
Dissolved carbon dioxide in oceans from __ that is used to make __
Physical variables that effect the health of a water system are __ __ and water movement
Chemical variables that effect the health of a water system are dissolved __ and other gases, __ salinity and nitrates
Ecosystems include both __ and __ factors
A group of the same organisms that can interbreed are called __
A __ is a group of organisms belonging to the same species that live in a particular area.
Different populations make up __
__ describes the variety of species found in the earths ecosystems
__ measures the number of individual organisms living in a defined space
__ is an interaction between species in which one species (predator) eats the other (the prey).
__ is a relationship that occurs when two or more organisms need the same resource at the same time
An ecological __ refers to the roll of an organism in its environment including type of food it eats, how it obtains food, and how it interacts with other organisms
__ exists between organisms of two different species that live in direct contact.
__ is a symbiotic relationship in which one organism benefits at the expense of another organism
__ is a symbiotic relationship in which both organisms benefit
__ provides molecules that serve as fuel and building material for all organisms
__ use the energy in light to make glucose from Carbon Dioxide and water through the process of __ which also releases oxygen
__ obtain food from eating plants or eating other animals
During __ oxygen reacts with glucose to provide energy and produce carbon dioxide waste.
Aerobic cellular respiration
__ recycle nutrients from dead plant or animal matter back into the soil.
Primary consumers that eat green plants are called __
Consumers that only eat other consumers are called __
Consumers that eat both plants and animals are called __
Another term for producer is an __. While another term for consumer is a __.
In a food chain only __ % of energy is transferred to the next organism
__ explores microscopic organisms including viruses bacteria, protists, and some Fungi
__ are non-living particles composed of DNA or RNA and needs a host cell to reproduce.
__ are complex and can contain membrane bound organelles (example, plant or animal)
__ are simple unicellular and do not contain membrane bound organelles (bacteria)
Bacteria reproduce through __, a form of asexual reproduction.
__ involves one parent and offspring that is genetically identical to the parent.
__ in bacteria occurs when mutated bacteria survive exposure to an antibiotic and form a new resistant population of bacteria.
__ are eukaryotic decomposers.
__ can become airborne, be inhaled, and trigger an allergic reaction in some people.
A __ is an organism that feeds on another called the __
A __ is an outbreak of a disease that is widespread, usually worldwide, while __ is usually confined to a particular region
__ is the use of living organisms to solve problems and make useful products such as food and medicine
__ provides molecules that serve as fuel and building materials for all organisms
__ carry on the many functions needed to sustain life
Through the process of __ cells convert energy (glucose) to a usable form of energy (ATP)
__ moves within organisms through a series of chemical reactions in which food is broken down and rearranged to form new molecules
A balanced __ combined with regular __ aid in the overall general health of the body
__ is the set of chemical reactions involved in storing fuel (food), molecules and converting fuel (food) molecules into energy
Change in a species over time is called __
Species acquire adaptations which leads to __ in populations
Comparing __ can be used as evidence for evolution
__ allows scientists to examine the relationships between organisms and construct evolutionary trees.
Living things evolve in response to changes in their __
The theory of __ states that organisms with beneficial variations will survive to pass their traits to the next generation.
In every population __ exists within the inherited traits of the individuals
Changes in __ can effect the survival of individual organisms and entire species
The greater the __ within a species, the greater the chances are for that species to survive during environmental changes
__ found in __ rocks are preserved remains or traces of organisms that provide evidence of how life and how the environment changed
__ forms when sediments bury an organism in the sediments change into rock leaving the shape of the organism
__ forms when mold is filled with sand or mud and hardens in the shape of an organism
__ forms when minerals soak into burried remains replacing the remains and changing them into rock
__ forms when entire organisms or parts of organisms are prevented from decaying by being trapped in rock, ice, tar, or amber.
__ forms when organisms are pressed between layers of soft mud or clay, hardens, squeezing almost all decaying organism away leaving the carbon imprint in the rock
__ forms when the mud or sand hardens to stone where a footprint, trail, or burrow of an organism left behind
The 4 eras of earths history in order are __ paleozoic, mesozoic and __
humans first appeared in the __ era.
The mass extinction that ended the paleozoic era caused most marine, __ , as well as __ to disapear
Reptiles, dinosaurs, small animals, birds and flowering plants appeared in the __ era
The __ states that each rock layer is older than the one above it.
Law of Superposition
__ are organisms that existed for a short period of time that can be used to date rocks
__ dating is an example of __ in which radioactive parent atoms decay into more stable daughter atoms
carbon 14, absolute dating
__ contain layers of ice that record the atmospheric composition at the time it was formed
In a __ fault, 2 pieces of land change their vertical position compared to one another
In a __ fault, 2 pieces of land move horizontally