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PASS Review Questions For 7th Grade Science

All of the individuals of a given species in a specific area or region at a certain time. Populations
All the different populations in a specific area or region at a certain time. Communities
One or more communities in an area and the abiotic factors Ecosystems
Individual ecosystems grouped together according to the climate and the predominant vegetation and characterized by adaptations of organisms to that particular environment Biomes
The place where an organism lives in order to obtain its food, water, shelter and other things needed for survival habitat
The particular role of an organism in its environment including type of food it eats, how it obtains its food and how it interacts with other organisms niche
Use pictures or words and arrows to show the movement of energy through the trophic levels of organisms Food chains
indicates the position that the organism occupies in the food chain—what it eats and what eats it trophic level
Describe the organisms found in interconnecting food chains using pictures or words and arrows Food webs
Show the amount of energy that moves from one trophic level to another in a food chain Energy pyramids
a tool that is used to magnify the features of an object microscope
contains the 10X magnifying lens Eyepiece
focuses the image under low power Coarse adjustment knob/focus
focuses the image under high power Fine adjustment knob/focus
the lighted area when looking through a microscope field of view
a prediction about the relationship between variables is formed from the testable question hypothesis
gained by carefully identifying and describing properties using the five senses or scientific tools scientific observation
are observations that use numbers (amounts) or measurements (including the unit label) or observations that make relative comparisons, such as more than, all, less than, few, or none Quantitative observations
observations that are made using only the senses and refer to specific properties Qualitative observations
an explanation or interpretation of an observation based on prior experiences or supported by observations made in the investigation inference
Each set of repeated data trial
a portion of the total number, as a type of estimation sample
extremely small particles, too small to be seen with a classroom microscope, that matter is composed of atoms
pure substances that cannot be changed into simpler substances Elements
pure substances that are composed of two or more types of elements that are chemically combined Compounds
not uniform throughout, the component substances can be visibly distinguished heterogeneous mixture
uniform throughout, the substances are evenly mixed and cannot be visibly distinguished homogeneous mixture
Having a shiny surface or reflecting light brightly Luster
Heat and electricity move through them easily Conductors
Ability to be hammered into different shapes Malleable
Ability to be drawn into a wire Ductile
Heavy for their size High density
Not shiny Dull
Heat and electricity do not move through them easily Nonconductors
Break or shatter easily (solids) Brittle
A horizontal row on the periodic table period
also called groups, are vertical columns of elements on the periodic table; they are usually numbered 1-18 Families
Rod-shaped bacteria BACILLUS
Round-shaped bacteria COCCUS
Spiral-shaped bacteria SPIRAL
The thin, flexible outer covering of a cell. It controls what enters and leaves a cell. CELL MEMBRANE
occurs as materials are moved from an area of higher concentration to an area of lower concentration DIFFUSION
Contains the genetic material (DNA) and is the control center of the cell NUCLEUS
Act as temporary storage centers. Some store water; others store waste products until they can be eliminated from the cell. VACUOLE
All organisms, including plants and animals, break down simple sugars (C6H12O6) into carbon dioxide (CO2) and water (H2O) and release energy. RESPIRATION
a process of cell division, which results in the production of two daughter cells from a single parent cell MITOSIS
A structure found in the nucleus of a cell that contains the genetic information (DNA). CHROMOSOMES
the passing of traits from one generation to another HEREDITY
a genetically determined characteristic that distinguishes one organism from another organism INHERITED TRAIT
the physical expression of the genes PHENOTYPE
responsible for the inherited characteristics that distinguish one individual from another GENES
Organisms rid the cells of waste products that could be harmful to the cell. WASTE ELIMINATION
Plants use light energy (for example sunlight) to combine carbon dioxide (CO2) and water (H2O) to make simple sugars (C6H12O6). PHOTOSYNTHESIS
Provides support and shape for plant cells. It is made mostly of cellulose. CELL WALL
Are the energy producing sites in the cell where respiration takes place. It is sometimes called the “powerhouse” of the cell. MITOCHONDRIA
Are the sites where photosynthesis takes place in a plant cell. They contain the chlorophyll used to make food. CHLOROPLASTS
The gel-like fluid inside of a cell made of mostly water CYTOPLASM
the diffusion of water across a membrane OSMOSIS
Protist with Pseudopods AMOEBA
Protist with Cilia PARAMECIUM
Protist with Flagella EUGLENA
causes blood to flow through the body by its pumping action heart
occur where two or more bones meet joints
attach bones at the joints ligaments
provide shape and support for the body and protection for many organs and structures bones
covers the body and prevents the loss of water skin
connect the skeletal muscles to bones tendons
involuntary muscle that forms the heart cardiac muscle
involuntary muscles that control many types of movement within the body (such as digestion) smooth muscle
voluntary muscles attached to bones and provide the force needed to move the bones skeletal muscle
filter and get rid of urea, excess water, and some other waste materials released by the cells kidneys
tubes which connect each kidney to the bladder ureters
a saclike muscular organ which stores urine until it is released from the body bladder
tube through which urine passes before it is removed from the body urethra
a secondary organ to the digestive system that functions to produce digestive juices that help to further break down the food in the small intestine pancreas
a secondary organ to the digestive system that functions to store bile produced by the liver gallbladder
a secondary organ of the digestive system that produces bile, which is used by the body to break up fat particles liver
a short tube that stores solid waste until it is eliminated from the body through the anus rectum
the organ where water is absorbed from the food and taken into the bloodstream; prepares the remaining undigested food for elimination from the body large intestine
the organ where most of the chemical digestion of food takes place; nutrients from food are also absorbed here small intestine
continues the process of mechanical digestion; and secretes gastric juices that continue the process of chemical digestion started in the mouth stomach
the transport tube that carries chewed food to the stomach esophagus
begins to break down food into smaller pieces through mechanical digestion; saliva in the mouth starts the process of chemical digestion mouth
carry blood that has oxygen and nutrients to all the parts of the body arteries
carry waste products (for example carbon dioxide) from all the parts of the body back to the heart veins
a highly contagious viral infection of the respiratory system influenza
a common fungal infection of the skin of the feet athlete’s foot
contagious disease caused by a bacterial infection strep throat
diseases which cannot be spread from person to person non-infectious diseases
a disease that results in the glucose (sugar) level of the blood being higher than the normal range diabetes
a disease of the nervous system that occurs when certain nerve cells in the brain stop functioning properly Parkinson’s disease
a disease in which skin cells found in the outer layers of the skin become damaged skin cancer
a disease that affects the lungs and the airways that deliver air to the lungs asthma
tiny organisms such as viruses, bacteria, and fungi pathogens
the body system responsible for distinguishing between the different kinds of pathogens and reacting to each according to its type immune system
a condition that does not allow the body to function normally disease
has an illness caused by a viral infection located in the respiratory system cold
Created by: belden