alex 7 science unit 1 test

Question 0

Independent variable

Answer 0

What is being tested

Question 1

Scientific method

Answer 1

Stating a problem
Gathering info
Suggesting an answer
Performing an experiment
Recording the results
Stating conclusions 
Communicate your results

Question 2

Dependent variable

Answer 2

What is observed

Question 3

Controlled variable

Answer 3

Things that could change but don’t

Question 4

Ecology

Answer 4

The study of the interrelationships of living organisms and their environment

Question 5

Ecologist

Answer 5

A person who studies ecology

Question 6

Habitat

Answer 6

The area in which an organism lives

Question 7

Environment

Answer 7

All the living and non- living conditions that act on an organism and affect its chances of survival

Question 8

Abiotic factors

Answer 8

Non-living or physical factors eg. Temperature amount of water amount of oxygen amount of light

Question 9

Biotic factors

Answer 9

Living factors eg. Amount of food predators parasites competitors

Question 10

Species

Answer 10

Group of organisms that can interbreed to produce viable offspring

Question 11

Community

Answer 11

All the organisms in a particular area at a given time

Question 12

Population

Answer 12

The number of individuals of the same species in a given area at a given time

Question 13

Ecosystem

Answer 13

A natural unit of living and non-living parts that interact to produce a stable system in which the exchange of materials between living and non-living parts cycle

Question 14

Biome

Answer 14

A biome is a large easily differentiated community unit arising as a result of complex interactions of climate ,other physical factors an biotic factors examples of biomes are tundra temperate grassland desert and tropical rainforest

Question 15

Biosphere

Answer 15

The biosphere is the collective interaction of all the biomes on the earth

Question 16

Symbiosis

Answer 16

A relationship in which two organisms of different species ‘live together’ for a period of time

Question 17

Parasitism

Answer 17

A form of symbiosis in which one organism derives nutrients from the second organism which suffers some harm but is usually not killed eg.a tick is the parasite that feeds of a dog which Is the host

Question 18

Mutualism

Answer 18

A form of symbiosis in which both organisms help each other

Question 19

Commensalism

Answer 19

A form of symbiosis in which one organism helps the other organism but there is no benifit nor harm done in return

Question 20

Predator /prey relationship

Answer 20

The relationship in which one organism hunts and eats another

Question 21

Competition

Answer 21

A relationship where two types if organisms compete for the same

Question 22

Factors effecting population

Answer 22

Available resources 
Activities of other organisms
Organisms own characteristics
Time of day or year
Weather

Question 23

Adaptation

Answer 23

a characteristic of an organisms that enable it to function more effectively or survive in its surroundings

Question 24

5 types of adaptation

Answer 24

``` structural color physiological behavioural reproductive ```

Question 25

structural adaptation

Answer 25

related to the structure of the organism

Question 26

color adaptation

Answer 26

related to the color

Question 27

physiological adaptation

Answer 27

related to the organisms metabolism

Question 28

reproductive adaptation

Answer 28

related to the courtship mating or rearing of young

Question 29

natural resources

Answer 29

the materials and products found in nature

Question 30

need

Answer 30

what you need

Question 31

want

Answer 31

what you want

Question 32

primary succession

Answer 32

an ecosystem that is slowly starting to grow from nothing

Question 33

secondary succession

Answer 33

an ecosystem that was a thriving ecosystem but got destroyed and is now growing again

Question 34

pioneer species

Answer 34

new species to that land

Question 35

original species

Answer 35

the original species of that land

Question 36

climax community

Answer 36

a thriving ecosystem

Question 37

bioindicater species

Answer 37

a species that shows us that something is wrong in the environment

Question 38

biological control

Answer 38

to control insect pests by using their natural enemy(brining in an exotic species even thought it may harm the original species)

Question 39

extinction

Answer 39

when an animal died out completely

Question 41

exterpation

Answer 41

when an animal species dies out in a area but is still alive in a different area

Question 42

physical monitoring

Answer 42

uses satellites to track the changes in landscapes over time

Question 43

environmental monitoring

Answer 43

tracks changes in climate temperature and weather patterns

Question 44

weather

Answer 44

day to day

Question 45

climate

Answer 45

long term

Question 46

chemical monitoring

Answer 46

the quality of air soil and water

Question 47

biological monitoring

Answer 47

tracks the changes in organisms or populations of organisms

Question 48

sustainability

Answer 48

resources of nature are being renewed at least as quickly as they are being used

Question 49

ecological footprint

Answer 49

a calculation of the total area of land and water needed to supply all of the materials and energy a human uses as well as the waste produces

Question 50

3 r's

Answer 50

reduce reuse recycle

Question 51

consumers

Answer 51

organisms that eat the food made by the producers

Question 52

producers

Answer 52

organisms that make there own food

Question 53

carnivores

Answer 53

organisms that only eat meat

Question 54

herbivores

Answer 54

organisms that only eat plants

Question 55

omnivores

Answer 55

organisms that eat plants and meat

Question 56

food chain

Answer 56

a sequence of feeding relationships among living organisms as they pass on food energy

Question 57

food web

Answer 57

the network of feeding relationships among organisms

Question 58

food pyramid

Answer 58

the pyramid which shows us the transfer of energy

Question 59

biomass

Answer 59

the total mass of living matter

Question 60

energy flow

Answer 60

the movement of energy which originally comes form from the sun

Question 61

scavenger

Answer 61

an organism that eats dead or decaying plant or animal matter

Question 62

decomposer

Answer 62

organisms that break down the cells of dead or waste material and absorb their nutrients

Question 63

carbon cycle

Answer 63

the cycle in which carbon is used and reused in the ecosystem

Question 64

water cycle

Answer 64

the continuous movement of water through the biosphere

Question 65

water cycle steps

Answer 65

evaporation transpiration condensation precipitation

Question 66

ph.

Answer 66

a scale used to express acid or alkaline content

Question 67

bioaccumulation

Answer 67

movement of pollutants through the levels of a food chain so that greater quantities are retained with movement of the food chain

Question 68

baseline data

Answer 68

basic info

Question 69

permanent plots

Answer 69

quadrats

Question 70

quadrats

Answer 70

a small area of a larger area

Question 71

environmental impact assessment

Answer 71

environmental report

Question 72

calculating population in an ecosystem

Answer 72

``` species : blue beetles ecosystem type:forest ecosystem size:1000m2 # of quadrats:5 each quadrats is:1m2 1rst quadrat:13 blue beetles 2nd quadrat:15 blue beetles 3rd quadrat:16 blue beetles 4th quadrat:14 blue beetles 5th quadrat:13 blue beetles total area of quadrats:5m2 total# of blue beetles in quadrats:71 blue beetles 71/5:14.2blue beetles per1m2 14.2x1000:14200blue beetles in the forest ecosystem ```

Question 73

Standard use for comparison

Answer 73

Control group

Question 74

New products or tools made because of knowledge gained through science

Answer 74

technology

Question 75

science

Answer 75

The process of understanding the world