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Science Exam
4th nine weeks exam-Friday May 20
57
Science
7th Grade
05/16/2011

Additional Science Flashcards

 


 

Cards

Term
Nucleus
Definition
The control center
Term
Muscle Tissue
Definition
A body tissue that contracts or shortens, making body parts move
Term
Homeostasis
Definition
The process by which an organism's in the internal environment is kept stable in spite of changes in the external environment
Term
Cardiac Muscle
Definition
mucsle tissue found only in the heart
Term
One contracts and one shortens
Definition
How do muscles work in pairs?
Term
Acne
Definition
A bacterial infection of the skin in which the oil glands become blocked and swollen
Term
Enzymes
Definition
A protien thatt speeds up chemical reactions in the bodies of living things
Term
Calorie
Definition
The amount of energy needed to raise the temperature of one gram of water by one Celsius degree
Term
65%
Definition
The human body is ___% water.
Term
Food Guide Pyramid
Definition
A chart that classifies foods into six groups to help people plan a healthy diet
Term
bottom
Definition
Biggest part of the food guide pyramid is the top/bottom (which one?)
Term
Top
Definition
Smallest part of the food guide pyramid is the top/bottom (which one?)
Term
Smallest
Definition
The top of the food guide pyramid is the Smallest/Biggest part (which one)
Term
biggest
Definition
The bottom of the food guide pyramid is the Smallest/Biggest part (which one)
Term
Weight
Definition
Food labels are listed by _________.
Term
Saliva
Definition
The fluid released when the mouth waters that plays an important role in both mechanical and chemical digestion
Term
Mucus
Definition
coats your stomach
Term
Mucus
Definition
A thick slippery substance produced by the body
Term
Small intestine
Definition
Where does most chemical digestion take place?
Term
Liver
Definition
The ______ produces bile.
Term
Villi
Definition
Tiny finger shaped structures that cover the inner surface of the small intestine and provide a large surface area through which digested food is absorbed.
Term
Habitat
Definition
The place where an organism lives and that provides the things the organisms need to survive.
Term
Photosynthesis
Definition
The process by which plants and some other organisms capture light energy and use it to make food from carbon dioxide and water.
Term
Abiotic Factors
Definition
The nonliving things of an ecosystem
Term
Biotic Factors
Definition
The living things of an ecosystem
Term
water
soil
sunlight
temperature
oxygen
Definition
What are some examples of Abiotic Factors?
Term
Grass
Animals
Bugs
Definition
What are some Biotic factors?
Term
Ecosystem
Definition
All the living and nonliving things that interact in the area
Term
Community
Definition
All the different populations that live together in the area
Term
Ecological Organization
Definition
Term
Population
Definition
All the members of one species in a particular area
Term
Ecology
Definition
The study of how living things interact with one another and their environment
Term
Ecologist
Definition
Scientists who study how living things interact with each other and with their environment are called __________.
Term
Population Density
Definition
The number of individuals in a specific area
Term
Birth Rate
Definition
The number of births in a population in a certain amount of time
Term
death rate
Definition
The amount of deaths in a population over a certain amount of time
Term
Limiting Factors
Definition
An environmental factor that prevents a population from increasing
Term
Predation
Definition
An interation in which one organism hunts and kills another animal for food
Term
Prey
Definition
An animal that a predetor feeds upon
Term
Producer
Definition
An organism that makes its own food
Term
Consumer
Definition
An organism that obtains energy by feeding on other organisms
Term
Condensation
Definition
The process by which a gas changes to a liquid
Term
Evaporation
Definition
The process by which molecules of a liquid absorb energy and change to the gas state
Term
Precipitation
Definition
Rain, Snow, Sleet, or Hail
Term
Vertabrae
Definition
The bones that make up the backbone
Term

A- movable

B- immovable

Definition
Name the two types of joints
Term
immovable
Definition
The bones in the skull are held together by ______ joints.
Term
immovable
Definition
The joints that attach the ribs to the sternum are _________ joints
Term

Ball and socket joint

Hinge joint

Pivot joint

gliding joint

Definition
What are the 4 types of movable joints?
Term
Ball-and-socket joints allow the greatest range of motion. This joint allows you to swing your arm freely in a circle.
Definition
What does the ball-and-socket joint do?
Term

shoulder blade-top of your arm bone fits into the deep, bowl-like socket of the scapula

hip

Definition
Where are Ball-and-Socket joints located?
Term
Like the hinge of a door, a hinge joint allows extensive forward or backward motion
Definition
What do hinge joints do?
Term

knee-allows you to bend and straigthen your leg

 

elbow-is also a hinge joint

Definition
Where are hinge joints located?
Term
A pivot joint allows one bone to rotate around another.
Definition
What does the pivot joint allow you to do?
Term

top of your neck- gives you limited ability to turn your head from side to side

 

Definition
Where are pivot joints located
Term
A gliding joint allows one bone to slide over another.
Definition
What does the gliding joint allow you to do?
Term

wrist- enables you to bend and flex your wrist, as well as make limited side to side motions

 

ankles-same

Definition
Where are gliding joints located?
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