science keywords

Question 1

natural science

Answer 1

the study of the natural world

Question 2

two types of natural sciences

Answer 2

physical science and biological science

Question 3

physical science

Answer 3

deals with inanimate (non living things)

Question 4

subjects of physical science

Answer 4

physics, chemistry, astronomy, geology and computer science

Question 5

biological science

Answer 5

deals with living things

Question 6

two types of biological science

Answer 6

botany and zoology

Question 7

botany

Answer 7

the study of plants

Question 8

zoology

Answer 8

the study of animals

Question 9

hypothesis

Answer 9

a proposed explanation of why certain events take place

Question 10

theory

Answer 10

is an explanation of observations and is bases on hypothesis, laws and facts

Question 11

scientific law

Answer 11

a description of observed occurrences and is based on repeated experiments

Question 12

primary data

Answer 12

collected by the researcher themselves

Question 13

secondary data

Answer 13

data that has not been collected by the scientist themselves

Question 14

cell

Answer 14

smallest working unit of a living thing

Question 15

organism

Answer 15

the name given to any living thing. for example, both plants and animals are organisms

Question 16

multicellular

Answer 16

organisms made up of 2 or more cells

Question 17

unicellular

Answer 17

organisms made up of only one cell

Question 18

tissue

Answer 18

a group of cells of the same type working together to do a particular job

Question 19

organ

Answer 19

a group of tissues working together to carry out a function

Question 20

system

Answer 20

a number of organs working together to carry out a function

Question 21

the seven characteristics of life

Answer 21

movement
reproduction
growth
response
respiration
excretion
nutrition

Question 22

animal cell

Answer 22

has mitochondria, cytoplasm, cell membrane, nucleus, ribosome

Question 23

plant cell

Answer 23

has mitochondria, cytoplasm, cell membrane, nucleus, ribosome, cell wall, chloroplast and large vacuole

Question 24

parallex error

Answer 24

make sure when you are taking a measurement that you eye is directly over the number on the scale so that you take and accurate reading

Question 25

oesophagus

Answer 25

carries food from the mouth to the stomach

Question 26

stomach

Answer 26

churns food adds hydrochloric acid to food chemically digests food has villi for absorbtion

Question 27

pancreas

Answer 27

makes enzymes to digest food

Question 28

liver

Answer 28

produces bile to aid in fat digestion

Question 29

gall bladder

Answer 29

stores bile until it is needed in the small intestine

Question 30

small intestine

Answer 30

7 meters long digests food and absorbs food into the bloodstream

Question 31

large intestine

Answer 31

stores undigested food for egestion made up of 2 parts: colon rectum

Question 32

rectum

Answer 32

stores faces for egestion

Question 33

colon

Answer 33

absorbs water from food into the blood

Question 34

anus

Answer 34

allows faeces to pass from the body

Question 35

appendix

Answer 35

no longer has a function

Question 36

digest

Answer 36

to break down large food particles into smaller soluble particles

Question 37

mechanical digestion

Answer 37

physically breaking down food. for example, chewing

Question 38

chemical digestion

Answer 38

breaks down food chemically. example, enzymes in the salivary glands

Question 39

incisors

Answer 39

cuts and slices food

Question 40

canines

Answer 40

grips and tears food

Question 41

molars

Answer 41

chews and grinds food

Question 42

premolars

Answer 42

chew and grind food

Question 43

wisdom teeth

Answer 43

chew and grind food often removed as they are not needed

Question 44

density

Answer 44

how much matter is inside the same volume. eg, 1m3 of styrofoam is less dense than 1m3 of water

Question 45

melting point

Answer 45

the temperature at which a solid changes to a liquid

Question 46

boiling point

Answer 46

the temperature at which a liquid changes to a gas

Question 47

freezing point

Answer 47

the point where a liquid turns back into a solid

Question 48

condensation

Answer 48

when a gas changes into a liquid

Question 49

molecule

Answer 49

made up of 1 or more atom. they can be the same or different atoms

Question 50

atoms

Answer 50

smallest part of a chemical element that can exist

Question 51

element

Answer 51

substance that only contains one type of atom

Question 52

compound

Answer 52

a substance that is made up of 2 or more different elements that are chemically combined (joined together). compounds contain 2 or more different types of atoms joined together by chemical bonds

Question 53

element

Answer 53

substance that only contains one type of atom

Question 54

mixture

Answer 54

two or more different substances mingled with each other but not chemically combined

Question 55

physical change

Answer 55

when the atoms form in a new way to give us a mixture by do not create a new substance

Question 56

chemical change

Answer 56

when atoms arrange in a different way to give us a new substance called a compound

Question 57

evaporation

Answer 57

the changing of a liquid to gas at the surface of the liquid