Science

Question 1

Length

Answer 1

Standard unit = metre
instrument ruler

Question 2

Volume

Answer 2

Amount of space it takes up
unit = metres cubed
instruments & methods - regular shape eg. cube is lengthXwidthXheight

Question 3

Mass

Answer 3

The amount of matter in the object
standard unit kg
instrument = mass balance

Question 4

Area

Answer 4

The amount of space enclosed within its boundary lines
standard unit metre squared
instrument = metre stick or trundle wheel

Question 5

Rectangle formula

Answer 5

Length x width

Question 6

Circle Formula

Answer 6

πr2 (Pi times the radius squared)

Question 7

Triangle Formula

Answer 7

Half the base times the perpendicular height

Question 8

Time

Answer 8

Unit = seconds
instrument = clocks
stopwatch or timer

Question 9

Temperature

Answer 9

Unit = degrees Celsius
instrument = thermometer

Question 10

Materials keywords

Answer 10

Solid, Liquid, Gas, Boiling Point, Melting Point, Freezing Point, Boiling, Melting, Condensation, Evaporation, Sublimation

Question 11

Matter definition

Answer 11

Anything that occupies space and has mass

Question 12

3 states of matter

Answer 12

Solid,
Liquid,
Gas

Question 13

Matter is made of particles called?

Answer 13

Atoms

Question 14

Particle Theory - Solids

Answer 14

Particles held together tightly don’t move,
Fixed pattern,
same shape,
tightly packed,
definite shape,
definite volume,
does not flow,
difficult to compress

Question 15

Particle Theory - Liquid

Answer 15

No fixed pattern,
small spaces between them,
can slide over each other,
no definite shape,
definite volume,
difficult to compress,
flow easily

Question 16

Particle Theory - Gas

Answer 16

Spreads out,
no pattern,
lots of space between,
no definite shape,
no definite volume,
easy to compress,
defuses to fill all available space

Question 17

The Scientific Method

Answer 17

Find the question or problem,
Research information,
Hypothesis prediction,
Experiment to test the hypothesis,
Analise data,
Conclusion and communicate results

Question 18

The individual parts of a cell are known as

Answer 18

Cell organelles

Question 19

Structure of animal cells are

Answer 19

Cell membrane
Cytoplasm
Nucleus
Mitochondrion
Ribosome

Question 20

Cell membrane

Answer 20

Allows substances in or out of the cell
Protects the cell
mostly made of fat
doesn’t allow everything through it
generally allows small substances through eg. water not large eg. protein

Question 21

Cytoplasm

Answer 21

Watery fluid that organelles float in
mostly water with salts, glucose and other food materials in it

Question 22

Nucleus

Answer 22

Contains genes that control the cell
Carries chromosomes which are made up of genes that control the working of the cell

Question 23

Genes are made of

Answer 23

DNA

Question 24

Mitochondrion

Answer 24

Where energy is released in respiration
“power-house of the cell”
where food reacts with oxygen to release energy
This process is called respiration

Question 25

Ribosome

Answer 25

where proteins are made eg. hormone insulin; enzyme amylase; collagen for the skin

Question 26

Organelles only found in Plant Cells

Answer 26

Cell Wall Vacuole Chloroplast

Question 27

Cell Wall

Answer 27

Support and protection cellulose - a very strong substance giving great support and protection - fibre in food is cellulose

Question 28

vacuole

Answer 28

storage of food and water a space within the cytoplasm where the cell can store substances

Question 29

Chloroplasts

Answer 29

Photosynthesis the organelles in plants that contain the green chemical called chlorophyll.

Question 30

Chlorophyll

Answer 30

traps light energy to be used in photosynthesis

Question 31

Photosynthesis is

Answer 31

the way green plants make their own food using light photo=light synthesis=combine

Question 32

Why do we need a digestive system?

Answer 32

Each cell in our body needs food to carry out its functions This food is delivered by the bloodstream Food we eat is mostly in large particles These large particles need to be broken down to fit in blood and through cell membranes

Question 33

a System is

Answer 33

a group of organs working together

Question 34

Digest

Answer 34

to break down large food particles to smaller particles

Question 35

Why do we need food?

Answer 35

Energy Growth Repair

Question 36

Food is not used in the digestive system - it is used

Answer 36

in the cells

Question 37

5 steps to provide nutrition for the body

Answer 37

Ingestion Digestion Absorption Assimilation Egestion

Question 38

Ingestion

Answer 38

Taking in food - eating

Question 39

Digestion

Answer 39

Breaking down the food

Question 40

Absorption

Answer 40

The food passing into the blood system

Question 41

Assimilation

Answer 41

The food being put to use by the cells eg. energy, growth, repair

Question 42

Egestion

Answer 42

Passing any unabsorbed food out in the form of faeces (POO!)

Question 43

Organs of the Digestive System

Answer 43

Mouth (with teeth) Oesophagus Stomach Small intestine Large intestine (colon) Salivary glands Liver Gall bladder Pancreas

Question 44

Mouth (teeth)

Answer 44

Takes in food Crush food with teeth Amylase is added to food

Question 45

Oesophagus

Answer 45

Carry food down to stomach

Question 46

Stomach

Answer 46

Churn the food Add acid to food

Question 47

Small intestine

Answer 47

Further digestion by enzymes Absorption of digested food into the blood

Question 48

Large intestine (colon)

Answer 48

Water absorbed into the blood Waste left prepared for egestion

Question 49

Salivary glands

Answer 49

Make saliva which contains the enzyme amylase to break starch down into smaller sugars

Question 50

Liver

Answer 50

Produces liquid Bile which helps digest fat Regulates the amount of each food in the blood

Question 51

Gall bladder

Answer 51

Stores Bile from the Liver until it is needed

Question 52

Pancreas

Answer 52

Makes enzymes to break down food

Question 53

Amylase

Answer 53

an enzyme that breaks starch down to a sugar, maltose

Question 54

an Enzyme is

Answer 54

a chemical found in living organisms that speeds up chemical reactions

Question 55

Peristalsis is

Answer 55

a muscular movement that only occurs in the muscles of the digestive system used to push the food along

Question 56

Teeth carry out

Answer 56

mechanical digestion

Question 57

Incisors

Answer 57

cut and slice food

Question 58

Canines

Answer 58

grip and tear food

Question 59

Premolars

Answer 59

chew and grind food

Question 60

Molars

Answer 60

chew and grind food

Question 61

Chemical breakdown of food in the digestive system is carried out by

Answer 61

enzymes

Question 62

The enzyme itself is not used up in the reaction - for this reason, it is known as a

Answer 62

catalyst

Question 63

any chemical reaction that takes place in a living organism is known as a

Answer 63

biochemical reaction

Question 64

an enzyme that breaks the maltose into glucose is

Answer 64

maltase