9 weeks test

Question 1

the process of gathering information about events or processes in a careful, orderly way

Answer 1

observation

Question 2

the information gathered in an observation

Answer 2

data

Question 3

a logical interpretation based on prior knowledge or experience

Answer 3

inference

Question 4

a proposed scientific explanation for a set of observations

Answer 4

hypothesis

Question 5

the idea that life could arise form nonliving matter

Answer 5

spontaneous generation

Question 6

is an organized way of using evidence to learn about the natural world

Answer 6

science

Question 7

an experiment in which only one variable is changed at a time

Answer 7

controlled experiment

Question 8

variable that is delibrately changed in the experiment

Answer 8

manipulated variable

Question 9

the variable that is observed and that changes in response to the manipulated variable

Answer 9

responding variable

Question 10

a well explanation that unifies a broad range of observations

Answer 10

theory

Question 11

the science that seeks to understand the living world

Answer 11

biology

Question 12

a collection of living matter enclosed by a barrier that seperates the cell from its surroundings

Answer 12

cell

Question 13

two cells from different parents unite to produce the first cell of the new organism

Answer 13

sexual reproduction

Question 14

the new organism has a single parent

Answer 14

asexual reproduction

Question 15

the combination of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes

Answer 15

metabolism

Question 16

the process by which they keep their internal conditions stable

Answer 16

homeostasis

Question 17

a decimal system of measurement whose units are based on certain physical standards and are scaled on multiples of 10

Answer 17

metric system

Question 18

devices that produce magnified images by focusing visible light ways

Answer 18

mircoscopes

Question 19

produce magnified images by focusing beams of electrons

Answer 19

electron microscopes

Question 20

allow light to pass through the specimen and use two lenses to form an image

Answer 20

compound light microscopes

Question 21

develops from the single original cell

Answer 21

cell culture

Question 22

to separate different cell parts

Answer 22

cell fractionation

Question 23

atom

Answer 23

the basic unit of matter, greek word atoms, which means able to be cut

Question 24

formed when one or more electrons are shared between atoms

Answer 24

covalent bonds

Question 25

positive and negative atoms

Answer 25

ions

Question 26

two or more elements combined together to make a chemical compound

Answer 26

compound

Question 27

smallest unit of most compounds

Answer 27

molecule

Question 28

formed when one or more electrons are transferred between the atoms

Answer 28

ionic bond

Question 29

brain of cell

Answer 29

nucleus

Question 30

negatively charged particle

Answer 30

electron

Question 31

a pure substance that consist of only one atom

Answer 31

element

Question 32

positively charged particle

Answer 32

proton

Question 33

particle with no charge

Answer 33

neutron

Question 34

produce their own food

Answer 34

autotrophs

Question 35

relies on other organisms for food

Answer 35

consumer

Question 36

eats only meat

Answer 36

carnivore

Question 37

eats dead matter

Answer 37

detrivore

Question 38

elements that have a different numbers of neutrons

Answer 38

isotope

Question 39

evolution

Answer 39

evolve

Question 40

what are the three particles that make up an atom

Answer 40

neutrons, protons, and electrons

Question 41

where are protons and neutrons and electrons found

Answer 41

protons and neutrons are found in the nucleus. electrons are orbiting it

Question 42

what are the levels of organization in order from smallest to largest

Answer 42

species, population, community, ecosystem, and biome

Question 43

what is the goal of science?

Answer 43

the goal of science is to investigate and understand the natural world, to explain events in the world, and to use those explanations to make useful predictions

Question 44

contains the combined portions of the planet in which all life exists, including land, water, and air

Answer 44

biosphere

Question 45

a group of organisms so similar to one another that they can breed and produce off spring

Answer 45

species

Question 46

groups of individuals that belong to the same species and live in the same area

Answer 46

population

Question 47

different populations that live together in one area

Answer 47

community

Question 48

a group of ecosystems that have the same climate and similar dominant communities

Answer 48

biome

Question 49

a collection of organisms that live in a particular place, together with their nonliving,or physical environment

Answer 49

ecosystem

Question 50

process by which plants make their own food by susing sunlight to create sugars and starches

Answer 50

photosynthesis

Question 51

use chemical energy to produce carbs

Answer 51

chemosynthesis

Question 52

links all of the food chains together

Answer 52

food web

Question 53

a series of steps in which organisms transfer energy by being eaten or eating something

Answer 53

food chain

Question 54

each step in a food chain or web

Answer 54

trophic level

Question 55

what are the 3 basic approaches in which scientists conduct research

Answer 55

experimenting observing modeling

Question 56

what are the four different cycles

Answer 56

water, phosphorus, nitrogen, carbon

Question 57

what is sunlight important

Answer 57

it is the main energy source for life

Question 58

characteristics of living things

Answer 58

living things are made up of cells living things reproduce living things are based on a universal code living things grow and develop living things obtain and use material energy living things respond to their environment living things maintain a stable internal environment taken as a group living things change over time

Question 59

the process by which water changes from liquid form to an atmospheric gas

Answer 59

evaporation

Question 60

the loss of water from a plant through its leaves

Answer 60

transpiration

Question 61

why do scientists test one variable at a time

Answer 61

so they know what went wrong. it is more controlled

Question 62

why is it important for scientists to share their work

Answer 62

so other scientists can build off of their experiments

Question 63

decimal system of measurement based on tens

Answer 63

metric system

Question 64

what is the difference between hypothesis and theories

Answer 64

theories are a well tested hypothesis | hypothesis is something that can be tested

Question 65

what is the difference between interference and a observation

Answer 65

observation is something involving the 5 senses | interference is something that is concluded

Question 66

to find the protons and electrons you look at the

Answer 66

atomic number

Question 67

to find the amount of neutrons you

Answer 67

subtract the atomic mass from the atomic number