Mrs. Vaughan's 7th Grade Science First Semester Exam Review
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| The part of the experiment you change on purpose. | Independent Variable
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| The part of the experiment that you measure. | Dependent Variable
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| The parts of the experiment you don't change. | Constants
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| The baseline or group that you compare the results of your experiment to. | Control
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| A measurement using numbers. | Quantitative Observations
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| A description of something, without using numbers. | Qualitative Observations
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| The number of times you repeat an experiment with the same variable. | Repeated Trials
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| The proper format for a hypothesis. | An "if...then" statement.
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| The proper format for a title. | "The Effect of the IV on the DV"
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| What is the basic unit of life? | The cell
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| The organelle that controls all functions of the cell--the "control center" of the cell. | Nucleus
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| The organelle that is the "powerhouse" of the cell. | Mitochondria
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| A cell that does NOT contain a nucleus. | Prokaryote
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| A cell that DOES contain a nucleus. | Eukaryote
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| All of the living AND nonliving things in one area at one time. | Ecosystem
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| Living parts of an ecosystem. | Biotic Factors
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| Nonliving parts of an ecosystem. | Abiotic Factors
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| An organism that produces its own food. | Producer
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| Another word for a producer. | Autotroph
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| An organism that consumes other organims for energy. | Heterotroph
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| An organism that breaks down dead and decaying organisms. | Decomposer
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| An organism that feeds on the remains of dead organisms. | Scavenger
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| An organism's role in its environment or how it makes its living. | Niche
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| One single organism | Individual
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| A group of two or more organisms of the same species living in the same place at the same time. | Population
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| A group of one or more different species living in the same place at the same time. | Community
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| The place where an organims lives and that provides the things an organism needs. | Habitat
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| At which level is there the most available energy in an energy pyramid? | Producer Level
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| What are the producers in Mono Lake? | Algae
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| Consumers that eat only plants. | Primary Consumers
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| Consumers that eat primary consumers. | Secondary Consumers
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| Consumers that eat secondary consumers. | Tertiary Consumers
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| A consumer that eats both plants and animals. | Omnivore
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| A consumer that eats only plants. | Herbivore
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| A consumer that eats only meat. | Carnivore
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| When a scientist actually looks and counts the organisms. | Direct Observation
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| When a scientist counts tracks, nests, holes, etc. and estimates the number of organisms. | Indirect Observation
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| When a scientist counts the number of organisms in a small fraction of the area and multiplies to estimate the total number. | Sampling
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| How populations increase | Birth or Immigration
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| How populations decrease | Death or Emigration
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| A factor in an environment that prevents a population from increasing indefinitely. | Limiting Factor
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| The struggle for organisms to survive in their environment when there is not enough food, water, or shelter. | Competition
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| An interaction where one organism kills and eats another. | Predation
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| The organism that does the killing in a predation relationship. | Predator
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| The organism that is killed in a predation relationship. | Prey
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| An interaction between two organisms in which at least one organism benefits. | Symbiosis
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| A relationship in which one species benefits and the other species is neither helped nor harmed. | Commensalism
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| An interaction between two species where both species benefit. | Mutualism
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| An interaction where an organism lives on or in another organism and harms it but does not kill it. | Parasitism
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| The organism which is living on or in another organism. | Parasite
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| The organism that the parasite is living on or in. | Host
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| A structure, function, or behavior that helps an organism to survive in its environment and reproduce. | Adaptation
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| Physical feature of an organism that helps it to survive. | Structural Adaptation
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| An organism's abiltiy to do somethin that helps it to survive in its environment. | Functional Adaptation
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| The things an organism does to survive. | Behavioral Adaptation
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| Organisms that belnd in well are better adapted for survival in that environment than organisms that are a different color. (Camouflage) | Protective Coloration
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| A defenseless animal or plant looks like another animal or plant with qualities that cause predators to avoid it. | Mimicry
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| A term for animals that have one body part that mimics another to increase survival during an attack. | Self-Mimicry
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| Any GENERAL structure, charactristic or behavior of an organism. | Feature
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| The SPECIFIC expression of a feature in an individual. | Trait
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| The naming system for organisms in which each organism is given a two-part name--a genus and species name. | Binomial Nomenclature
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| A series of paired statements that describe the physical characteristics of different organisms. | Dichotomous Key
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| The scientific study of how living things are classified. | Taxonomy
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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