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7th Grade Science
7th Grade Science Exam 1 Mr Barrett
| Question | Answer |
|---|---|
| List 5 Dos for working in a science lab | 1 WEAR GOGGLES 2 HAIR BACK 3 GLOVES 4 CLOSED TOE SHOES 5 RESPONSIBILITY |
| Independent Variable | THE PART OF THE EXPERIMENT YOU CHANGE ON PURPOSE |
| Dependent Variable | THE CHANGE THAT OCCURS AS A RESULT OF THE CHANGE MADE FOR THE INDEPENDENT VARIABLE |
| Constants | A FACTOR IN AN EXPERIMENT THAT DOES NOT CHANGE EX: ON THE DECAY OF A FRUIT AN APPLE WOULD BE THE CONSTANT |
| Control Group | A GROUP USED AS A BASELINE FOR CHECKING AND CMOPARING THE RESULTS OF AN EXPERIMENT EX: GIVE SOMEONE A SUGAR PILL AND SOMEON AN ENERGY PILL |
| Quantitative Observations/Data | DATA THAT DEAL WITH NUMBERS AND MEASUREMENTS EX: IN A FIRST GRADE CLASS THERE ARE 12 BOYS AND 9 GIRLS |
| Qualitative Observations/Data | DATAT THAT CAN BE COLLECTED WITHOUT TOOLS BY USING 5 SENSES EX: TOUCH, SEE, SMELL, TASTE, HEAR |
| Repeated Trials | ADDITIONAL TRIALS OR TEST OF THE SMAE EXPERIMENT EX: 2 + 2 = 4 CHECK ON A CALCULATOR |
| How to write a hypothesis | AN "IF….THEN" STATEMENT EX: IF WE GO WHILE IT'S RAINING THEN WE WILL GET WET |
| How to write a title | THE EFFECT OF IV ON DV |
| Y axis: Which variable goes on it and what direction is it? | THE DEPENDENT VARIABLE VERTICALLY |
| X axis: Which variable goes on it and what direction is it? | THE INDEPENDENT VARIABLE HORIZONTALLY |
| Permeable | MATERIAL THAT LIQUIDS CAN FLOW THROUGH EX: SPONGE |
| Impermeable | MATERIALS THROUGH WHICH LIUIDS CANNOT SOAK/FLOW EX: CONCRETE, CEMENT/PUDDLE |
| Which material (clay, sand, or gravel) will hold the most water? | GRAVEL |
| Accumulation | THE PROCESS OF WATER GATHERING IN A RESERVOIR |
| Transpiration | WATER VAPOR GIVEN OFF BY PLANTS AND ANIMALS |
| Which reservoir in the water cycle contains the most water? | CONDENSATION |
| Condensation | THE CHANGE FROM GAS TO LIQUID EX: WHEN STEAM TURNS INTO RAIN/DEW |
| What are you seeing when the mirror fogs up after you breathe on it? | EVAPORATION |
| Percolation | THE MOVEMENT OF WATER THROUGH EARTHS MATERIALS EX: GRAVEL/SOIL/CLAY |
| Aquifer | PERMEABLE EARTH MATERIALS THAT COLLECT WATER EX: THE DICKSON RIVER |
| Aquitard | IMPERMEABLE EARTH MATERIALS EX: CLAY: NOTHING CAN GET THROUGH IT |
| Pesticides | CHEMICALS TO KILL INSECTS EX: INSECTICIDES, FUNGICIDES, HERBICIDES |
| Point-source pollution | SINGLE, INDENTIFIABLE SOURCE OF AIR, WATER, THEMAL, NOISE OR LIGHT POLLUTION EX: AIR OR CERTAIN COMPANY MAKING CHEMICALS |
| Non-point source pollution | BOTH WATER AND AIR POLLUTION FROM DIFFUSE SOURCES EX: AIR: PEOPLE THAT DRIVE CARS |
| Ecosystem | SPECIES COMING TOGETHER WITH IT'S ENVIRONMENT, LIVING AND NON-LIVING EX: DESERT: ALL ORGANISMS DESIGNED TO SURVIVE WITH LITTLE WATER |
| Biotic Factor | LIVING THINGS IN AN ECOSYSTEM EX: BIRDS/ HUMANS/ ANIMALS |
| Abiotic Factor | NON-LIVING PARTS OF ECOSYSTEM EX: TABLE CHAIR PAPER |
| Niche | IT PROVIDES MANY DIFFERENT NICHES FOR ORGANISMS THAT LIVE UNDER / ON THE CORALS |
| Population | ALL OF THE INDIVIDUAL OF ONE SPECIES IN A SPECIFIED AREA A TONE TIME EX: BEEHIVE |
| Community | ALL THE INTERACTING POPULATIONS AND/OR INDIVIDUALS IN THE SPECIES AREA, MORE THAN ONE SPECIES EX: OWL AND BIRDS |
| In which biome would it be an advantage to have white fur? | TUNDRA |
| Tundra | ICY, COLD CLIMATE, FREEZING (LITTLE SNOW) |
| Taiga/Boreal Forest | COOL 40-1100 CM RAINFALL ALL YEAR |
| Temperate Deciduous Forest | LOTS OF TREES HOT /DRY |
| Grasslands | VERY HOT IN SUMMER DRY AND VERY COLD IN WINTER |
| Tropical Rainforest | HOT, MOIST 100 CM RAIN PER YEAR |
| Direct Observation | A METHOD OF COLLECTION DATA THAT INVOLVES FIRST HAND VISUAL INSPECTION OF THE PARAMETERS UNDERSTUDY EX: YOU SEE 5 APPLES, YOU COUNT 5 APPLES, THERE ARE 5 APPLES |
| Indirect Observation | THE RESEARCHER MUST RELY ON REPORTED OBSERVATIONS THAT INCLUDE DIRECT OBSERVATIONS OF OTHERS EXL ASKING SURVEYS |
| Sampling | COUNTING THE NUMBER OF ORGANISMS EX: A CORAL REEF HAS MANY ORGANISMS |
| How populations increase | WHEN THE BIRTHRATE EXCEEDS DEATHRATE EX: WHEN A MOUSE RATE GOES DOWN AN OWLS RATE GOES DOWN AS WELL |
| How populations decrease | WHEN DEATH RATE EXCEEDS BIRTHRATE EX: WHEN A MOUSE RATE GOES UP AND OWLS GOES UP THE MOUSE GOES DOWN |
| Limiting Factor | THE GROWTH OF AN ORGANISM POPULATION EX: SPACE - THE POPULATIONCAN ONLY GROW WITHIN ITS ROOM |
| Jet Stream | A NARROW, VARIABLE OF VERY STRONG AIR CURRENTS CIRCLING THE GLOBE 5-9 KILOMETERS |
| Density | THE DEGREE OF COMPACTNESS OF A SUBSTANCE EX: IF OIL GOES INTO THE OCEAN IT RISES BECAUSE OF IT'S LESS DENSE THAN WATER |
| What causes warm air to rise? | TEMPERATURE, WIND, AND DENSITY EX: WHEN MOLECULES ARE HEATED THEY COME TOGETHER AND RISE |
| Gulf Stream | A WARM OCEAN CURRENT THAT FLOWS FROM THE FULF OF MEXICO THROUGH THE ATLANTIC OCEAN |
| Habitat Destruction/Loss | WHEN A NATURAL HABITAT IS RENDERED FUNCTIONALLY UNABLE TO SUPPORT THE SPECIES PRESENT EX: WHENA FOREST FIRE HAPPENS THEN A TREE FALLS A SQUIRREL LOOSES IT'S HOME |
| Habitat Fragmentation | DESCRIBES EMERGENCE OR DISCONTINUES IN AN ORGANISM PREFERRED ENVIRONMENT EX: WHEN ANIMALS ATTACK EACH OTHER |
| Extinction | THE STATE/PROCESS OF A SPECIES FAMILY OR LARGER GROUP BEING OR BECOMING EXTINCT. EX: DINOSAURS WENT THROUGH AN EXPLOSION AND GOT KILLED |
| Keystone Species | OTHER SPECIES IN AN ECOSYSTEM LARGELY DEPEND SUCH THAT IF IT WERE REMOVED THE ECOSYSTEM WOULD CHANGE EX: IF YOU TOOK A BIRD OUT OF A WHOLE SPECIES THEN IT WOULD ALL CHANGE |
| 3 Factors that Affect Biodiversity | 1 HABITAT DESTRUCTION 2 CLIMATE CHANGE 3 POACHING EX: 1 LOOSING HOMES 2 PLANTS IN COLD EATHER WON'T GROW 3 ELEPHANTS AND TUSKS |
| Captive Breeding | BREEDING ANIMALS IN HUMAN CONTROLLED ENVIRONMENTS WITH RESTRICTED SETTINGS EX: MAKING A BIGGER POPULATION |
| Biodiversity | THE NUMBER OF A DIFFERENT SPECIES IN AN AREA EX: POPULATION/ECOSYSTEM |
| What is the MAIN cause of species extinction? (Be specific!) | POACHING/ILLECAL HUNTING EX: ELEPHANTS FOR TUSKS AND ALLIGATORS FOR SKING |
| What type happens after a forest fire? | BURNS LOW-LYING VEGETATION |
| Pros and Cons of forest fires | 1 RECYCLES NUTRIENTS INTO SOIL 2 HELPS CONTROL DISEASES IN SOIL/PLANTS 3 OPENS FOREST FOR SUNLIGHT EX: 1 ANIMAL HABITATS = RUINED 2 DAMAGE TO HOUSE.PROPERTY |
| Controlled burn | A TECHNIQUE USED IN FOREST MANAGEMENT AND FARMING |
| 5 DON'TS FOR WORKING IN A SCIENCE LAB | 1 NO HORSE PLAY 2 HAIR DOWN 3 NO EATING OR DRINKING 4 DON'T DRINK CHEMICALS 5 NO OPEN TOED SHOES |
| DESERT | HOT AND DRY BIOME EMPTY |
Created by:
aphidkiller
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