Year 7 End Of Year Flashcards
1
Q
What is a independent variable
A
The variable we are changing
2
Q
What is a dependent variable
A
The variable we are measuring
3
Q
What is Categoric data
A
Data that is described by a label
4
Q
What if discrete data
A
Data that is a whole numbee
5
Q
What is ordered data
A
Data that can be ordered but not put into an actual number
6
Q
What is continuous data
A
Data that could have any number of
7
Q
When do you plot a line graph?
A
When you have 2 sets of continuous data
8
Q
How do you find the gradient
A
Changing in y
——————-
Changing in x
9
Q
What is a hazard
A
The danger associated with a particular object
10
Q
What is a risk
A
The chance of something happening
11
Q
How do you use a Bunsen burner?
A
Place the Bunsen burner onto a heatproof mat
Make sure your gas tap is off when connecting the tube
Make sure your air hole is closed when lighting the Bunsen burner
Turn your gas tap on
12
Q
Astronomy
A
The study of objects (such as starts,planets,comets and galaxies) beyond the earths atmosphere
13
Q
What is the geocentric model
A
Where the sun is in the centre and all the planets orbit around it
14
Q
What is the heliocentric model
A
Where the earth is in the centre and there are 5 planets orbiting around it
15
Q
What is mass
A
Mass is the amount of matter an object contains
16
Q
What is weight
A
Weight is the force of gravity acting on an object
17
Q
What is gravitational field strength
A
10N/KG
18
Q
Formula for finding weight
A
mass x gravitational field strength
19
Q
What is the force of gravity
A
All objects have a force that attracts them towards each other
20
Q
How do starts generate heat
A
By nuclear fusion
21
Q
How to planets be seen
A
Because they reflect light form their star
22
Q
What is our nearest star
A
The sun
23
Q
Why do we orbit the sun
A
We orbit the sun due to gravity
24
Q
How long does it take for the moon to rotate around the earth once
A
28 days
25
How much of the moon is lit
Only one half
26
Evaporation
Evaporation occurs when particles in a liquid escape to form a vapour
27
When does evaporation usually occur
Evaporation can occur at any temperature but its fastest at liquids boiling point
28
What is everything made out of
Atoms
29
What is an element
When a substance only has one atom
30
What is a pure substance
When the substance only has 1 type of element in it
31
What is a compound
2 or more elements chemically joined
32
What is an element
Made of 1 atom only
33
What is a mixture
2 or more elements and/or compound not joined together
34
Molecules
2 or more non metals chemically joined
35
What is diffusion
Diffusion is the movement of particles that allows them to spread out and mix with other particles
36
Shen does diffusion usually occur
Diffusion occurs in liquids and gasses but hardly at all in solids
37
What is solubility
Mass of solute that can dissolve in the amount of solvent given at a certain temperature
38
What is a solute
The substance being dissolved
39
What is a solvent
The substance doing the dissolving
40
What is a solution
A mixture of the solute+solvent
41
Soluble
A substance that dissolves in the solvent
42
Insoluble
The substance that cannot dissolve in a solvent
43
What is crystallisation
Separating a solid from a solution instead of evaporating the solution you can evaporate some of the solvent letting the solute slowly crystallise
44
Filtration
To separate an insoluble,you should pour onto filter paper and separate particles from the solution
45
Distillation
You can evaporate and then condense the solvent.This gets rid of the solute which leaves the solvent behind
46
MRS GREN
Movement
Respiration
Sensitivity
Growth
Reproduction
Excretion
Nutrition
47
Excretion
This is the removement of waste produced by a individual
48
Movement
This is a change of position in order to respond to surroundings
49
Respiration
This is a release of energy from food or stored chemicals
50
Sensitivity
Reacting to the surroundings
51
Growth
Growing up
52
Reproduction
Creating new individuals
53
Nutritions
The intake of food
54
Nucleus
Controls activity of the cell
55
Cell membrane
Surrounds the cell
56
Cytoplasm
Carey out activities of the cell
57
Cell wall
Supports cell to stop from bursting
58
Permanent vacuole
Storage of waste substance
59
Chloroplast
Traps light energy to make food for the plant
60
Mitochondrien
The plant and animal cell
61
Muscle cell
Relaxes and controls movements around the body
62
Where is a muscle cell found
In the heart and muscles
63
Red blood cell
Carries oxygen and blood around the body
64
Where is a red blood cell found
Found In the circulatory system
65
Nerve cell
Sends and receives messages from the brain
66
When is the nerve cell found
Found in the brain,spinal cord and nervous system
67
Cilated cell
Helps to wave and move things and traps dust from getting into body
68
Where is a cilated cell found
Found in the lining of your nose
69
Egg cell
To develop into a foetus and collect genes from the mother and pass them onto child
70
Where is the egg cell found
In the ovaries
71
Palisade cell
Carry out photosynthesis for the plant
72
Where is a palisade cell found
Found in top half of the leaf
73
Sperm cell
To fertilise a woman’s egg cell and soon develop a foetus
74
Where is a sperm cell found
Found in a males testicles
75
Root hair cell
Absorbs water and nutrients from the soil
76
Where is a root hair cell found
Fount in roots of a plant
77
What is a unicellular organism
A unicellular organism is a cell that is made of 1 cell.Found in animals or plants
78
Good vacuole
Helps digest food
79
Coneradictile vacuole
Vacuole helps remove water and waste
80
Pseudopod
Helps engulf the food
81
Energy
The ability to do ‘work’ this involves movement of some sorr
82
Can energy be created
No energy can only be changed/converted/transferred to another form
83
How can kinetic energy be changed
By speeding up the object or down
84
How can chemical energy be changed
Can be changed by chemical bonds being made or broken
85
How can thermal energy be changed
Changed by material warming or cooling
86
How can gravitational potential energy be changed
Changed by massive objects moving closer or further apart
87
How can nuclear energy be changed
Can be changed by fusion
88
How can vibrational energy be changed
Can be changed by the amplitude of vibration increasing/decreasing
89
How can magnetic energy. Be changed
90
How can elastic potential energy be changed
Changed by squeezing/relaxing/or stretching object
91
How can electrostatic energy be changed
Changed by changing the distance between the objects
92
What are energy pathways
Energy pathways are how energy is transferred
93
How can you mechanically transfer energy
When a force moves through a distance
94
How can you electrically transfer energy
When a charge moves through a potential difference
95
How can energy be transferred by heating
When the temperature difference occurs
96
How can energy be transferred by radiation
Light and sound
97
What are stores measured in
Joules
98
What are pathways measured in
Watts
99
What is absolute zero
When atoms and molecules posses some kinetic energy and they freeze until the molecules are completely stationary.This is absolute zero which is 273* Celsius
100
What is conduction
Conduction is like pass the punch.Some materials pass on the kinetic energy better than others.The best conductors are metals as they have free electrons to move along the material
101
What is convection
Convection is warmer air rising as you transfer heat
102
Why does warm air rise
Warm air rises because it is less dense
103
What is infrared radiation
Is a form of electromagnetic spectrum.It does not need anything else to transfer it as it travels in invisible waves
104
Example of infrared radiation
The sun
105
Why do solids melt
Solids melt because the particles gain energy and move further apart
106
Why do liquids freeze
Liquids freeze because the particles lose energy and move closer together
107
Why do gasses condense
The particles lose energy and move closer together
108
Why do liquids evaporate
Because the particles gain energy and move further apart
109
What does DNA stand for
Deoxyribonucleic acid
110
What Is DNA made out of
Long strands connected by an acid to create a double helix
111
Where is DNA found inside a cell
DNA is found inside the nucleus
112
What is DNA called when it winds up tight
A chromosome
113
What is a gene
A gene is the set of instructions to posses a particular trait
114
Inheritance characteristics
The features we inherit from our genes
115
What is an allele made out of
A moms and dads feature paired
116
Dominant allele
Allele will express itself which means it will show itself regarding whether there is a recessive allele or not
117
Recessive
Allele will only show itself if it has a recessive allele gene
118
Why are fatal diseases still around if they kill people
Adults with the desease pass it on to their children
119
Chromosomes
46 chromosomes in a nucleus
23 pairs
All the chromosomes make up a cells genome
120
What is the circulatory system
Transports blood around the body,oxygen and glucose too
121
What is the main organ of the circulatory system
The heart because is sends blood through your body through tube like organs called blood vessels
122
What is the nervous system
Helps the organism to respond to the environment around it
123
What is the job of the lungs
The job of the lungs is to exchange gases
124
What is a wave
A wave is a transfer of energy
125
What do all waves require to travel
A medium
126
What is a medium
A solid liquid or gas
127
What are oscillations
The points in sound waves
128
What are examples of transverse waves
Water ripples
Light
Slinky rope
129
What are longitudinal waves
Longitudinal waves consist of squashes and stretches which travel outward
130
What is the amplitude of a wave
The maximum displacement of a point on a wave away from its undisturbed position
131
What is the wavelength
Wavelength is the distance between the two consecutive crests our troughs
132
What is the frequency of a wave
The number of waves passing a point each second
133
What is the wave speed
The speed at which energy is transferred through the medium
134
What is thermal energy
Any object with a temperature
135
What is kinetic energy
Any object that is moving
136
What is gravitational potential
Objects at a height above the ground
137
What is elastic potential energy
Objects that are stretched or compressed
138
What is chemical energy
Anything that has a chemical energy store
139
What is nuclear energy
Energy that is stored in the nucleus
140
What is magnetic potential energy
When two magnets are held close together
141
What is electrostatic potential
When charges are close together
