exam

Question 1

members of an ecosystem

Answer 1

Producer
Primary consumer
Secondary consumer
Tertiary consumer

Question 2

trophic levels

Answer 2

Primary: consumer
Secondary: primary consumer
Third: secondary consumer
fourth: tertiary consumer

Question 3

photosynthesis

Answer 3

when a plant uses sunlight to produce energy/food

Question 4

carbon cycles

Answer 4

Carbon dioxide gas + water + sunlight - glucose + oxygen gas

Glucose + oxygen gas - Carbon dioxide gas + water + energy

Question 5

Water cycle

Answer 5

Evaporation - condensation - precipitation

Question 6

biotic factors of influence

Answer 6

Predator population increases prey population decreses

Question 7

Abiotic factors of influence

Answer 7

not enough sunlight no flowers

Question 8

extinct

Answer 8

No more of a species

Question 9

endagered

Answer 9

Almost extinct

Question 10

invasive species

Answer 10

a species that does not belong where it is has no predators eats everything

Question 11

extripated

Answer 11

no more in a certain country

Question 12

human impacts to the enviroment

Answer 12

Good: Planting trees, Fertilizing
Bad: Clear cutting, pollution

Question 13

mutualism

Answer 13

Mutualism: One species lives on another and both benefit

Question 14

commensalism

Answer 14

Commensalism: one benefits the other doesn’t suffer or gain

Question 15

Parasitism

Answer 15

living on another organism only one benefits

Question 16

predator prey

Answer 16

predator eats prey

Question 17

carrying copasity

Answer 17

The number of organisms that can be held within an area

Question 18

limiting factor

Answer 18

conditions that limit the growth of the population

Question 19

ecolodgy

Answer 19

the study of organisms

Question 20

ecosystems

Answer 20

a system with living organisms and nonliving

Question 21

population

Answer 21

a group of individuals within the same species in an area

Question 22

community

Answer 22

an interaction between different organism that live in the same area

Question 23

niche

Answer 23

is the role a species has in its enviroment

Question 24

puresubstance

Answer 24

made of one type of atom

Question 25

physical change

Answer 25

a change that only affect the appearance of the object exp. color change shape change, state of matter

Question 26

chemical change

Answer 26

irreversible change that changes the atoms of an object exp. burning wood

Question 27

evidence of chemical change

Answer 27

change of smell, color change, temperature change

Question 28

Gas test | oxygen

Answer 28

The red splint relights

Question 29

Gas test | carbon dioxide

Answer 29

light splint goes out

Question 30

Gas test | hydrogen

Answer 30

light splint makes a popping sound

Question 31

patters in the periodic table | Period/Group

Answer 31

Period: horizontal across the table/9 periods Groups: Vertical across the table/ 18

Question 32

alkali metal

Answer 32

1st group on the periodic table

Question 33

Alkaline earth metals

Answer 33

2nd group on the periodic table

Question 34

Halogen gases

Answer 34

17th group on the periodic table

Question 35

Noble gases

Answer 35

18th group on the periodic table

Question 36

Daltin

Answer 36

Billard ball

Question 37

Thompson

Answer 37

plum pudding

Question 38

Rutherford

Answer 38

solar system model

Question 39

Bohr

Answer 39

Rings

Question 40

valence electron

Answer 40

The electron one the last ring of the outer shell

Question 41

Atomic #

Answer 41

How elements are ordered

Question 42

Atomic Mass

Answer 42

Measure by the # of protons and neutrons

Question 43

atomic notation

Answer 43

shows the chemical symbol and the # of isotops

Question 44

cations

Answer 44

positively charged ion's

Question 45

anion's

Answer 45

negatively charged ions

Question 46

two laws of electric charge

Answer 46

1- opposites attract | 2- same charges repel

Question 47

conducter

Answer 47

Low resistance for electricity to flow through

Question 48

Insulator

Answer 48

high resistance to prevent energy flow

Question 49

frictioin

Answer 49

Producing electricity by rubbing two objects together

Question 50

Contact

Answer 50

Electron's move from the - to the neutral object causing both to be negative

Question 51

Lightning

Answer 51

when a cloud is full of electrons it transfers some of the electrons to the ground through the form of lightning

Question 52

current

Answer 52

the flow of an electrical charge

Question 53

Ohms law

Answer 53

R=V/I V=I x R I=V/R

Question 54

voltmeter

Answer 54

goes around the circuit, measures the voltage between two points

Question 55

Ammeter

Answer 55

goes in the circuit, measures the current of the circuit

Question 56

4 outer planets

Answer 56

further away from the sun, Made of gas

Question 57

4 inner planets

Answer 57

closer and made of rock

Question 58

Big bang theory

Answer 58

the entire universe was created in a moment with a big explosion

Question 59

solar system

Answer 59

sun - mercury - Venus - earth - mars - Jupiter - Saturn - Uranus - Neptune

Question 60

the sun

Answer 60

5 billion years left 73% hydrogen 25% helium

Question 61

types of galaxies

Answer 61

Barred spiral Spiral Irregular Elliptical

Question 62

Measurement

Answer 62

1 AU= 150,000,000 km | 1 LY= 9000,000,000,000