Benchmark test

Question 1

what are greenhouse gases

Answer 1

carbon, mathane, and H2O. they trap and hold in heat

Question 2

what is the goal of science

Answer 2

to investigate and undertstand the natural world, to explain events in the natural world, and to use those explanation to make useful predictions

Question 3

quanatative data

Answer 3

exact number measurements of data

Question 4

qualatative

Answer 4

desciptive data

Question 5

what are the 8 characteristics of a living thing

Answer 5

made of cells, reproduce, based of a universal genentic code, grow and develop, obtain and use materials and energy, respond to environment, maintain a stable invernal environment, and change over time

Question 6

what are the 8 characteristics of a living thing

Answer 6

made of cells, reproduce, based of a universal genentic code, grow and develop, obtain and use materials and energy, respond to environment

Question 7

what is a centrifudge

Answer 7

an obejct that breaks cells open to get DNA

Question 8

what is true about a compound

Answer 8

the chemical and physical properties are very different

Question 9

what is a valence electron

Answer 9

outermost electron that is involved in chemical reactions

Question 10

what is the difference between a pos and neg charge

Answer 10

a pos charge gives and a neg charge takes

Question 11

what is an ionic bond

Answer 11

bonds formed hen one or more electros are transferred from one atom to another

Question 12

true or false: ice is more dense than water

Answer 12

false…ice is less dense

Question 13

what is a monosacharides

Answer 13

a carbohydrate

Question 14

what are fats, proteins, and nucleic acids made of (different_

Answer 14

fats are made of fatty acids proteins are made of amino acids, and nuclic acids are made from DNA

Question 15

what to enzymes do to chemical reactions

Answer 15

speed them babies up

Question 16

what are the levels of organization

Answer 16

Biosphere, ecosystem, community, population, organism, group of cells, cells, molecule

Question 17

in the food chain, what are algae

Answer 17

producers

Question 18

what are chemosynthetic bacteria

Answer 18

bacteria that dont need sunlight to live

Question 19

what is biomass

Answer 19

total amount of living tissuewithin a given trophic level

Question 20

what eats both producers and consumers

Answer 20

omnivores

Question 21

snake eats from that ate a snake what level is the snake

Answer 21

level three consumer

Question 22

what is the differnece from energy and nutrients

Answer 22

energy moves through the ecosystem in one direction while nutrients gets recyles

Question 23

what is a limiting nutrient ina fresh water pond

Answer 23

phosphuras

Question 24

unequal of earths surfrace creates ____

Answer 24

WID, CURRENTS, HEAT, AND CLIMATES

Question 25

what is a microclimate

Answer 25

a tiny forest ina desert

Question 26

two biomes with leats rain

Answer 26

desert and tundra

Question 27

what is necasary for a water ecosystem

Answer 27

salt, water, nutrients, and oxygen

Question 28

what is not true about the ocean

Answer 28

lowtide marks extends to end of continent

Question 29

if you live ina fast flowing environment you need:

Answer 29

suckers, claws, ect;

Question 30

what is it called when there are a bunch of plants in one area or a number of individuals in one area

Answer 30

population density

Question 31

what does range do

Answer 31

gives you a general idea of where

Question 32

what is it called when you are reproducing at a constant rate

Answer 32

exponential growth...j curve

Question 33

what is a logstic or stable growth

Answer 33

s curve

Question 34

what is a limiting facotr that would affect a sea otter

Answer 34

predators, pollution, competition

Question 35

what is deforestation

Answer 35

the un doing of thy forest

Question 36

what is the number of differnet species in biosphere called

Answer 36

biodiversty

Question 37

ozone depetian

Answer 37

chloroflorocarbons

Question 38

SHA: two jobs of enzymes

Answer 38

enzymes are proteins that act as a biolgocial catalyst and speed up chemical reactions that take place in cellsby lowering the activation energy to build pathways in body

Question 39

what is density independent facotr

Answer 39

limiting factor that affects al populations in similar ways, no pop no issue exmaples are wildfires, or any other natural diasters

Question 40

how are hunters dif today

Answer 40

high tech weapons, its a sport

Question 41

how is the earth like an island

Answer 41

earth is surrounded by sapce like islands are by water we have a set # of resources and self susstainable

Question 42

in a picture of an ecosystem where are the most nutrients

Answer 42

the bottom of rthe rover